--- title: "Denver to Kos cheap flights from $461 (DEN to KGS) - Expedia" description: "Book cheap Flights from Denver (DEN) to Kos (KGS) start at $461 for one-way and $954 for round trip. Earn your airline miles on top of our rewards!" canonical: "https://www.expedia.com/lp/flights/den/kgs/denver-to-kos" language: en-US market: US currency: USD prices_as_of: 2026-11-12T18:31:45Z --- # $461 Cheap Flights from Denver (DEN) to Kos (KGS) ![Ancient ruins with stone columns and scattered trees.](https://images.trvl-media.com/place/6029116/5d492066-2f4a-422d-ae12-8d6e8a7c3977.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View $461 flight on Tue, Sep 14, 2027](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:460.93&airProductToken=AQqmAQoyCMGGARIEMTA0MBiDaSCYzgEoi--3AzDK8LcDOExAAFgBagVCQVNJQ3IITEtJOTBUQlEKMQjBhgESAzg4MBiYzgEguTwoufK3AzCF9rcDOExAAVgBagVCQVNJQ3IITEtJOTBUQlEKPQjMsAESBDgzNTYYuTwgypEBKO34twMwl%5Fq3AzhMQAFYAWoFQkFTSUNyCExLSTkwVEJRegkI15YBEgMzNTYSCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ## Popular airlines from Denver Intl. Airport (DEN) to Kos (KGS-Kos Island Intl.) [Finnair](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:11/26/2026TANYT&leg2=from:KGS,to:DEN,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) [British Airways](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:11/26/2026TANYT&leg2=from:KGS,to:DEN,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) [Austrian Airlines](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:11/26/2026TANYT&leg2=from:KGS,to:DEN,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"OS"}}]) [Lufthansa](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:11/26/2026TANYT&leg2=from:KGS,to:DEN,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) [Brussels Airlines](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:11/26/2026TANYT&leg2=from:KGS,to:DEN,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SN"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Denver to Kos (DEN-KGS) Prices were available within the past 7 days and start at $461 for one-way flights and $954 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select United flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $954 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:953.59&airProductToken=AQquAQo1CNWCARIEMTI4MxiDaSDEjQEo1u-3AzC48bcDOExAAFgBaghFQ09MSUdIVHIITEtJOTBUQlEKMwjMsAESAjE5GMSNASC5PCiJ87cDMNr2twM4TEABWAFqCEVDT0xJR0hUcghMS0k5MFRCUQpACMywARIEODM1Nhi5PCDKkQEo7fi3AzCX-rcDOExAAVgBaghFQ09MSUdIVHIITEtJOTBUQlF6CQjXlgESAzM1NgqzAQo6CMywARIEODM1NxjKkQEguTwohJi5AzDCmbkDOExAAFgBagJCRXIITEtJOTBUQlF6CQjXlgESAzM1Nwo6CMywARIEMzYyNBi5PCCMFSi7nbkDMPKduQM4TEABWAFqAkJFcghMS0k5MFRCUXoKCMyQARIEMjM3NQo5CNWCARIEOTQ1ORiMFSCDaSihn7kDMKGkuQM4TEABWAFqAkJFcghMS0k5MFRCUXoJCMyQARIDNDgwEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select United flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $968 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:967.69&airProductToken=AQquAQo1CNWCARIEMTI4MxiDaSDEjQEo1u-3AzC48bcDOExAAFgBaghFQ09MSUdIVHIITEtJOTBUQlEKMwjMsAESAjE5GMSNASC5PCiJ87cDMNr2twM4TEABWAFqCEVDT0xJR0hUcghMS0k5MFRCUQpACMywARIEODM1Nhi5PCDKkQEo7fi3AzCX-rcDOExAAVgBaghFQ09MSUdIVHIITEtJOTBUQlF6CQjXlgESAzM1NgqbAQo6CMywARIEODM1NxjKkQEguTwohJi5AzDCmbkDOExAAFgBagJCRXIITEtJOTBUQlF6CQjXlgESAzM1NwouCMywARIDMzE2GLk8IOuJASixnbkDMJ-euQM4TEABWAFqAkJFcghMS0k5MFRCUQotCNWCARICMjYY64kBIINpKPGfuQMwv6S5AzhMQAFYAWoCQkVyCExLSTkwVEJREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select United flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $985 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:984.39&airProductToken=AQqiAQo1CNWCARIEMTAxMxiDaSCLuAEolO-3AzCw8LcDOExAAFgBaghFQ09MSUdIVHIITEtJOTBUQlEKMwjPpgESAjUyGIu4ASCVIiit8bcDMNr2twM4TEABWAFqCEVDT0xJR0hUcghMS0k5MFRCUQo0CM-mARIDODY3GJUiIMqRASjC-bcDMM76twM4TEABWAFqCEVDT0xJR0hUcghMS0k5MFRCUQqaAQouCM-mARIDODY4GMqRASCVIijAmLkDMNaZuQM4TEAAWAFqAkJFcghMS0k5MFRCUQotCM-mARIDMTgxGJUiIIwVKPqcuQMwtp25AzhMQAFYAWoCQkVyCExLSTkwVEJRCjkI1YIBEgQ5NDU5GIwVIINpKKGfuQMwoaS5AzhMQAFYAWoCQkVyCExLSTkwVEJRegkIzJABEgM0ODASCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select United flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $989 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:988.79&airProductToken=AQqaAQo5CNWCARIEOTQ1OBiDaSCMFSi38bcDMID2twM4TEAAWAFqAkJFcghMS0k5MFRCUXoJCMyQARIDNDgxCi0Iz6YBEgMxODQYjBUglSIo2va3AzCb97cDOExAAVgBagJCRXIITEtJOTBUQlEKLgjPpgESAzg2NxiVIiDKkQEowvm3AzDO-rcDOExAAVgBagJCRXIITEtJOTBUQlEKmgEKLgjPpgESAzg2OBjKkQEglSIowJi5AzDWmbkDOExAAFgBagJCRXIITEtJOTBUQlEKLQjPpgESAzE4MRiVIiCMFSj6nLkDMLaduQM4TEABWAFqAkJFcghMS0k5MFRCUQo5CNWCARIEOTQ1ORiMFSCDaSihn7kDMKGkuQM4TEABWAFqAkJFcghMS0k5MFRCUXoJCMyQARIDNDgwEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select United flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $999 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:998.99&airProductToken=AQqZAQotCNWCARIDMTgyGINpIKUEKKPxtwMw2PW3AzhMQABYAWoCQkVyCExLSTkwVEJRCjgIz6YBEgMyMDgYpQQglSIoqve3AzD%5F97cDOExAAVgBagJCRXIITEtJOTBUQlF6CQjCqAESAzIwOAouCM-mARIDODY3GJUiIMqRASjC-bcDMM76twM4TEABWAFqAkJFcghMS0k5MFRCUQqaAQouCM-mARIDODY4GMqRASCVIijAmLkDMNaZuQM4TEAAWAFqAkJFcghMS0k5MFRCUQotCM-mARIDMTgxGJUiIIwVKPqcuQMwtp25AzhMQAFYAWoCQkVyCExLSTkwVEJRCjkI1YIBEgQ5NDU5GIwVIINpKKGfuQMwoaS5AzhMQAFYAWoCQkVyCExLSTkwVEJRegkIzJABEgM0ODASCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select United flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $1,000 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:999.69&airProductToken=AQqOAQotCNWCARIDMTgyGINpIKUEKKPxtwMw2PW3AzhMQABYAWoCQkVyCExLSTkwVEJRCi0Iz6YBEgMyMTAYpQQglSIo3Pe3AzCx-LcDOExAAVgBagJCRXIITEtJOTBUQlEKLgjPpgESAzg2NxiVIiDKkQEowvm3AzDO-rcDOExAAVgBagJCRXIITEtJOTBUQlEKmgEKLgjPpgESAzg2OBjKkQEglSIowJi5AzDWmbkDOExAAFgBagJCRXIITEtJOTBUQlEKLQjPpgESAzE4MRiVIiCMFSj6nLkDMLaduQM4TEABWAFqAkJFcghMS0k5MFRCUQo5CNWCARIEOTQ1ORiMFSCDaSihn7kDMKGkuQM4TEABWAFqAkJFcghMS0k5MFRCUXoJCMyQARIDNDgwEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select British Airways flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $1,127 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1126.99&airProductToken=AQpzCjEIwoIBEgMyMTgYg2kg64kBKMjytwMw3%5Fa3AzhPQABYAWoFTk9CQUdyCE9LWDlDOUJWCj4IwoIBEgQyNzQ4GMuxASDKkQEo1Pi3AzDT-rcDOE9AAVgBagVOT0JBR3IIT0tYOUM5QlZ6CQjBYBIEMjc0OApzCj4IwoIBEgQyNzQ5GMqRASDLsQEoxZi5AzC%5FmrkDOE9AAFgBagVOT0JBR3IIT0tYOUM5QlZ6CQjBYBIEMjc0OQoxCMKCARIDMjE5GOuJASCDaSjzoLkDMMaluQM4T0ABWAFqBU5PQkFHcghPS1g5QzlCVhIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select Swiss International Air Lines flight, departing Tue, Sep 14 from Denver to Kos, returning Wed, Sep 29, priced at $1,214 Just found](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:9/14/2027TANYT&leg2=from:KGS,to:DEN,departure:9/29/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1213.19&airProductToken=AQq3AQo%5FCMywARIEMzExORiDaSDriQEosfO3AzDN97cDOExAAFgBagdFQ09DTUZUcghMS0k5MFROVnoJCNWCARIDMjYyCjMIzLABEgMzMjcY64kBILk8KMT6twMwrfu3AzhMQAFYAWoHRUNPQ01GVHIITEtJOTBUTlYKPwjMsAESBDgzNTYYuTwgypEBKMT%5FtwMw7oC4AzhMQAFYAWoHRUNPQ01GVHIITEtJOTBUTlZ6CQjXlgESAzM1Ngq2AQo%5FCMywARIEODM1NxjKkQEguTwohJi5AzDCmbkDOExAAFgBagdFQ09DTUZUcghMS0k5MFROVnoJCNeWARIDMzU3CjMIzLABEgMzMTYYuTwg64kBKLGduQMwn565AzhMQAFYAWoHRUNPQ01GVHIITEtJOTBUTlYKPgjMsAESBDMwNDYY64kBIINpKPGfuQMwv6S5AzhMQAFYAWoHRUNPQ01GVHIITEtJOTBUTlZ6CAjVggESAjI2EgoIARABGAEqAkxYGAEiBAgBEAEoAigDKAQwCw) Tue, Sep 14 - Wed, Sep 29 · DEN · KGS · Roundtrip [Select Brussels Airlines flight, departing Thu, Jun 17 from Denver to Kos, returning Sat, Jun 26, priced at $1,513 Found 22 hours ago](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:6/17/2027TANYT&leg2=from:KGS,to:DEN,departure:6/26/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1512.49&airProductToken=AQq8AQpACNOcARIEOTU3NBiDaSCYXSj1hbADMNmHsAM4VEAAWAFqCEVDT0xJR0hUcghUSFY5MFRCUXoKCMGGARIEMTA3NApACNOcARIEOTU1MhiYXSChpAEojYiwAzC2i7ADOFRAAVgBaghFQ09MSUdIVHIIVEhWOTBUQlF6CQjBhgESAzgzMgo2CNOcARIEMzI0MxihpAEgypEBKNiNsAMwpY-wAzhUQAFYAWoIRUNPTElHSFRyCFRIVjkwVEJRCrwBCjYI05wBEgQzMjQ0GMqRASChpAEon-uwAzD77LADOFNAAFgBaghFQ09MSUdIVHIIU0hWOTBUQlEKQAjTnAESBDk1NTEYoaQBIJhdKOLxsAMwn%5FWwAzhTQAFYAWoIRUNPTElHSFRyCFNIVjkwVEJRegkIwYYBEgM4MzMKQAjTnAESBDk1NzcYmF0gg2ko7vewAzD9-bADOFNAAVgBaghFQ09MSUdIVHIIU0hWOTBUQlF6CgjBhgESBDEwNzUSDAgBEAEYASoCU04yABgBIgQIARABKAIoAygEMAE) Thu, Jun 17 - Sat, Jun 26 · DEN · KGS · Roundtrip [Select Lufthansa flight, departing Thu, Jun 17 from Denver to Kos, returning Sat, Jun 26, priced at $1,541 Found 22 hours ago](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:6/17/2027TANYT&leg2=from:KGS,to:DEN,departure:6/26/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:1540.19&airProductToken=AQqtAQozCMyQARIDNDgxGINpIIwVKJeIsAMw4IywAzhUQABYAWoIRUNPTElHSFRyCFRIVjkwVEJRCjMIzJABEgMxMjEYjBUgpQQouJGwAzD0kbADOFRAAVgBaghFQ09MSUdIVHIIVEhWOTBUQlEKQQjMkAESBDQ0MTgYpQQgypEBKMqVsAMw%5FpawAzhUQAFYAWoIRUNPTElHSFRyCFRIVjkwVEJRegoItLIBEgQxMjAyCrkBCkEIzJABEgQ0NDE5GMqRASClBCiQ5rADMNjnsAM4U0AAWAFqCEVDT0xJR0hUcghTSFY5MFRCUXoKCLSyARIEMTIwMwozCMyQARIDNDMyGKUEIK4cKJjqsAMw1-6wAzhTQAFYAWoIRUNPTElHSFRyCFNIVjkwVEJRCj8IzJABEgQ3NDY2GK4cIINpKLbvsAMwz%5FCwAzhTQAFYAWoIRUNPTElHSFRyCFNIVjkwVEJRegkI1YIBEgM1OTASDAgBEAEYASoCTEgyABgBIgQIARABKAIoAygEMAs) Thu, Jun 17 - Sat, Jun 26 · DEN · KGS · Roundtrip ## Alternative airports near Kos Prices were available within the past 7 days. Prices and availability are subject to change. [Select flight to Kos Island Intl. KGS. Cheapest and Closest option available. Average driving time to city center is 25 minutes. Flights from $5,542](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:KGS,departure:11/26/2026TANYT&leg2=from:KGS,to:DEN,departure:11/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 25 min ## Book with confidence ### Denver to Kos Flights #### The cheapest times to fly from Denver to Kos On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Kos are during the month of September. You can find some of the cheapest flights from Denver to Kos with Expedia's search tool and vast selection of airlines. #### The best time to book a flight from Denver to Kos Sunday is one of the best days to book for cheap flights from Denver to Kos: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. #### How to find cheap round-trip tickets from Denver to Kos Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Kos in 2026\. You can also book with separate airlines for your outbound and return journeys, from $461 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Kos flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Denver to Kos airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. *\*Terms apply.* *Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages.* ## Frequently Asked Questions ### How much does a flight from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) cost? You can find cheap one-way flights from $461 and cheap return flights $954 DEN to KGS with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when DEN to KGS ticket fares go up or down. ### What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? The cheapest month to fly from DEN to KGS is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route. ### Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? Enter DEN to KGS and your travel dates, then apply the 'Nonstop' filter to see only direct flights. ### What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? Air Canada, United and Delta are just some of the carriers that fly from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget. *\*Prices based on flights available on Expedia in the last year.* ### How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up [Price Tracking](https://www.expedia.com/why/price-tracking) and receive alerts when fares go up or down. ### What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience. ### What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? The earliest flight from Denver International Airport (DEN) to Kos Island International Airport (KGS) typically departs at around 6:00 AM, operated by Delta and Sky Express. This is a seasonal service active in July, allowing you to start your day early and make the most of your time on the beautiful island of Kos. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search. ### How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? Flying from DEN to KGS with a connection usually takes about 17 hours 20 minutes, traveling roughly 6,320 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic. ### Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? Select the "Business class" and "First class" filters when looking for DEN to KGS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip. ### How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) flight with Expedia? It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of [One Key™](https://www.expedia.com/welcome-one-key), you can also earn OneKeyCash™\* on top of your airline miles when you book with Expedia. \*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands. ### What airports do you fly into for Kos from Denver Intl. (DEN)? From Denver Intl. (DEN), you can fly into Kos Island Intl. (KGS) to reach Kos. Some flights may connect through major hubs like Pearson Intl. (YYZ), O'Hare Intl. (ORD), Washington Dulles Intl. (IAD) before reaching Kos. Compare routes and airports on Expedia to find the best flight options for your travel plans. ### Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) at the last minute? Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare. ### Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) flight and hotel package? Securing a Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) [Kos Vacation Packages](https://www.expedia.com/kos.d1804.destination-travel-guides) is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars. ### Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.)? If you booked your Denver, CO (DEN-Denver Intl.) to Kos (KGS-Kos Island Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in [your itinerary](https://www.expedia.com/trips) or confirmation email. Or, head to our [Customer Service portal](https://www.expedia.com/helpcenter/) if you'd like more information. ## Travel information | Origin airport | Denver Intl. Airport | | ------------------- | ------------------------------------------------------------------------- | | Destination airport | Kos | | Distance | 6,319 miles away | | Airlines serving | Finnair, British Airways, Austrian Airlines, Lufthansa, Brussels Airlines | | Popular airline | Finnair | | Roundtrip price | $954 | ## Explore a world of travel with Expedia - [Flights](?equalTargetTab=tab-0) - [Flights from Paris (CDG) to Kos (KGS)](https://www.expedia.com/lp/flights/cdg/kgs/paris-to-kos) - [Flights from East Midlands (EMA) to Kos (KGS)](https://www.expedia.com/lp/flights/ema/kgs/east-midlands-to-kos) - [Flights from Frankfurt (FRA) to Kos (KGS)](https://www.expedia.com/lp/flights/fra/kgs/frankfurt-to-kos) - [Flights from Nashville (BNA) to Kos (KGS)](https://www.expedia.com/lp/flights/bna/kgs/nashville-to-kos) - [Flights from Prague (PRG) to Kos (KGS)](https://www.expedia.com/lp/flights/prg/kgs/prague-to-kos) - [Flights from Pittsburgh (PIT) to Kos (KGS)](https://www.expedia.com/lp/flights/pit/kgs/pittsburgh-to-kos) - [Flights from Thessaloniki (SKG) to Kos (KGS)](https://www.expedia.com/lp/flights/skg/kgs/thessaloniki-to-kos) - [Flights from Boston (BOS) to Kos (KGS)](https://www.expedia.com/lp/flights/bos/kgs/boston-to-kos) - [Flights from Washington (IAD) to Kos (KGS)](https://www.expedia.com/lp/flights/iad/kgs/washington-to-kos) - [Flights from Bristol (BRS) to Kos (KGS)](https://www.expedia.com/lp/flights/brs/kgs/bristol-to-kos) - [Flights from Budapest (BUD) to Kos (KGS)](https://www.expedia.com/lp/flights/bud/kgs/budapest-to-kos) - [Flights from Edinburgh (EDI) to Kos (KGS)](https://www.expedia.com/lp/flights/edi/kgs/edinburgh-to-kos) - [Flights from New York (JFK) to Kos (KGS)](https://www.expedia.com/lp/flights/jfk/kgs/new-york-to-kos) - [Flights from Bucharest (OTP) to Kos (KGS)](https://www.expedia.com/lp/flights/otp/kgs/bucharest-to-kos) - [Flights from Detroit (DTW) to Kos (KGS)](https://www.expedia.com/lp/flights/dtw/kgs/detroit-to-kos) - [Flights from Toronto (YYZ) to Kos (KGS)](https://www.expedia.com/lp/flights/yyz/kgs/toronto-to-kos) - [Flights from Tel Aviv (TLV) to Kos (KGS)](https://www.expedia.com/lp/flights/tlv/kgs/tel-aviv-to-kos) - [Flights from Newark Liberty Intl. Airport (EWR) to Kos (KGS)](https://www.expedia.com/lp/flights/ewr/kgs/newark-liberty-intl-airport-to-kos) - [Flights from Dublin (DUB) to Kos (KGS)](https://www.expedia.com/lp/flights/dub/kgs/dublin-to-kos) - [Flights from Los Angeles (LAX) to Kos (KGS)](https://www.expedia.com/lp/flights/lax/kgs/los-angeles-to-kos) - [Flights from Zagreb (ZAG) to Kos (KGS)](https://www.expedia.com/lp/flights/zag/kgs/zagreb-to-kos) - [Flights from Bari (BRI) to Kos (KGS)](https://www.expedia.com/lp/flights/bri/kgs/bari-to-kos) - [Flights from Chania (CHQ) to Kos (KGS)](https://www.expedia.com/lp/flights/chq/kgs/chania-to-kos) - [Flights from Naxos (JNX) to Kos (KGS)](https://www.expedia.com/lp/flights/jnx/kgs/naxos-to-kos) - [Flights from Raleigh (RDU) to Kos (KGS)](https://www.expedia.com/lp/flights/rdu/kgs/raleigh-to-kos) - [Flights from Seattle (SEA) to Kos (KGS)](https://www.expedia.com/lp/flights/sea/kgs/seattle-to-kos) - [Flights from Grand Rapids (GRR) to Kos (KGS)](https://www.expedia.com/lp/flights/grr/kgs/grand-rapids-to-kos) - [Flights from Manila (MNL) to Kos (KGS)](https://www.expedia.com/lp/flights/mnl/kgs/manila-to-kos) - [Flights from Johannesburg (JNB) to Kos (KGS)](https://www.expedia.com/lp/flights/jnb/kgs/johannesburg-to-kos) - [Flights from Rome (FCO) to Kos (KGS)](https://www.expedia.com/lp/flights/fco/kgs/rome-to-kos) - [Flights from Warsaw (WAW) to Kos (KGS)](https://www.expedia.com/lp/flights/waw/kgs/warsaw-to-kos) - [Flights from Tirana (TIA) to Kos (KGS)](https://www.expedia.com/lp/flights/tia/kgs/tirana-to-kos) - [Flights from Charlotte (CLT) to Kos (KGS)](https://www.expedia.com/lp/flights/clt/kgs/charlotte-to-kos) - [Flights from New Orleans (MSY) to Kos (KGS)](https://www.expedia.com/lp/flights/msy/kgs/new-orleans-to-kos) - [Flights from Las Vegas (LAS) to Kos (KGS)](https://www.expedia.com/lp/flights/las/kgs/las-vegas-to-kos) - [Flights from Naples (NAP) to Kos (KGS)](https://www.expedia.com/lp/flights/nap/kgs/naples-to-kos) - [Flights from Izmir (ADB) to Kos (KGS)](https://www.expedia.com/lp/flights/adb/kgs/izmir-to-kos) - [Flights from Ankara (ESB) to Kos (KGS)](https://www.expedia.com/lp/flights/esb/kgs/ankara-to-kos) - [Flights from London (LGW) to Kos (KGS)](https://www.expedia.com/lp/flights/lgw/kgs/london-to-kos) - [Flights from Málaga (AGP) to Kos (KGS)](https://www.expedia.com/lp/flights/agp/kgs/malaga-to-kos) - [Flights from Manchester (MAN) to Kos (KGS)](https://www.expedia.com/lp/flights/man/kgs/manchester-to-kos) - [Flights from Philadelphia (PHL) to Kos (KGS)](https://www.expedia.com/lp/flights/phl/kgs/philadelphia-to-kos) - [Flights from Beirut (BEY) to Kos (KGS)](https://www.expedia.com/lp/flights/bey/kgs/beirut-to-kos) - [Flights from Paris (PAR) to Kos (KGS)](https://www.expedia.com/lp/flights/par/kgs/paris-to-kos) - [Flights from Stockholm (ARN) to Kos (KGS)](https://www.expedia.com/lp/flights/arn/kgs/stockholm-to-kos) - [Flights from Athens (ATH) to Kos (KGS)](https://www.expedia.com/lp/flights/ath/kgs/athens-to-kos) - [Flights from Auki (AKS) to Kos (KGS)](https://www.expedia.com/lp/flights/aks/kgs/auki-to-kos) - [Flights from Portland (PDX) to Kos (KGS)](https://www.expedia.com/lp/flights/pdx/kgs/portland-to-kos) - [Flights from Houston (IAH) to Kos (KGS)](https://www.expedia.com/lp/flights/iah/kgs/houston-to-kos) - [Flights from Düsseldorf (DUS) to Kos (KGS)](https://www.expedia.com/lp/flights/dus/kgs/dusseldorf-to-kos) - [Flights from Lisbon (LIS) to Kos (KGS)](https://www.expedia.com/lp/flights/lis/kgs/lisbon-to-kos) - [Flights from Brussels (BRU) to Kos (KGS)](https://www.expedia.com/lp/flights/bru/kgs/brussels-to-kos) - [Flights from Tulsa (TUL) to Kos (KGS)](https://www.expedia.com/lp/flights/tul/kgs/tulsa-to-kos) - [Flights from Istanbul (IST) to Kos (KGS)](https://www.expedia.com/lp/flights/ist/kgs/istanbul-to-kos) - [Flights from Munich (MUC) to Kos (KGS)](https://www.expedia.com/lp/flights/muc/kgs/munich-to-kos) - [Flights from Dubai (DXB) to Kos (KGS)](https://www.expedia.com/lp/flights/dxb/kgs/dubai-to-kos) - [Flights from Cincinnati (CVG) to Kos (KGS)](https://www.expedia.com/lp/flights/cvg/kgs/cincinnati-to-kos) - [Flights from Basel (BSL) to Kos (KGS)](https://www.expedia.com/lp/flights/bsl/kgs/basel-to-kos) - [Flights from Birmingham (BHX) to Kos (KGS)](https://www.expedia.com/lp/flights/bhx/kgs/birmingham-to-kos) - [Flights from Corfu (CFU) to Kos (KGS)](https://www.expedia.com/lp/flights/cfu/kgs/corfu-to-kos) - [Flights from Vojens (SKS) to Kos (KGS)](https://www.expedia.com/lp/flights/sks/kgs/vojens-to-kos) - [Flights from Copenhagen (CPH) to Kos (KGS)](https://www.expedia.com/lp/flights/cph/kgs/copenhagen-to-kos) - [Flights from Amman (AMM) to Kos (KGS)](https://www.expedia.com/lp/flights/amm/kgs/amman-to-kos) - [Flights from Chicago (ORD) to Kos (KGS)](https://www.expedia.com/lp/flights/ord/kgs/chicago-to-kos) - [Flights from Cologne (CGN) to Kos (KGS)](https://www.expedia.com/lp/flights/cgn/kgs/cologne-to-kos) - [Flights from London (STN) to Kos (KGS)](https://www.expedia.com/lp/flights/stn/kgs/london-to-kos) - [Flights from Larnaca (LCA) to Kos (KGS)](https://www.expedia.com/lp/flights/lca/kgs/larnaca-to-kos) - [Flights from Madrid (MAD) to Kos (KGS)](https://www.expedia.com/lp/flights/mad/kgs/madrid-to-kos) - [Flights from Yerevan (EVN) to Kos (KGS)](https://www.expedia.com/lp/flights/evn/kgs/yerevan-to-kos) - [Flights from Cleveland (CLE) to Kos (KGS)](https://www.expedia.com/lp/flights/cle/kgs/cleveland-to-kos) - [Flights from Sofia (SOF) to Kos (KGS)](https://www.expedia.com/lp/flights/sof/kgs/sofia-to-kos) - [Flights from Killarney (KIR) to Kos (KGS)](https://www.expedia.com/lp/flights/kir/kgs/killarney-to-kos) - [Flights from Belfast (BHD) to Kos (KGS)](https://www.expedia.com/lp/flights/bhd/kgs/belfast-to-kos) - [Flights from Rhodes (RHO) to Kos (KGS)](https://www.expedia.com/lp/flights/rho/kgs/rhodes-to-kos) - [Flights from Barcelona (BCN) to Kos (KGS)](https://www.expedia.com/lp/flights/bcn/kgs/barcelona-to-kos) - [Flights from Exeter (EXT) to Kos (KGS)](https://www.expedia.com/lp/flights/ext/kgs/exeter-to-kos) - [Flights from Miami (MIA) to Kos (KGS)](https://www.expedia.com/lp/flights/mia/kgs/miami-to-kos) - [Flights from Liverpool (LPL) to Kos (KGS)](https://www.expedia.com/lp/flights/lpl/kgs/liverpool-to-kos) - [Flights from Vienna (VIE) to Kos (KGS)](https://www.expedia.com/lp/flights/vie/kgs/vienna-to-kos) - [Flights from Milan (MXP) to Kos (KGS)](https://www.expedia.com/lp/flights/mxp/kgs/milan-to-kos) - [Flights from Atlanta (ATL) to Kos (KGS)](https://www.expedia.com/lp/flights/atl/kgs/atlanta-to-kos) - [Flights from Glasgow (GLA) to Kos (KGS)](https://www.expedia.com/lp/flights/gla/kgs/glasgow-to-kos) - [Flights from Dallas (DFW) to Kos (KGS)](https://www.expedia.com/lp/flights/dfw/kgs/dallas-to-kos) - [Flights from Venice (VCE) to Kos (KGS)](https://www.expedia.com/lp/flights/vce/kgs/venice-to-kos) - [Flights from Leipzig (LEJ) to Kos (KGS)](https://www.expedia.com/lp/flights/lej/kgs/leipzig-to-kos) - [Flights from Mykonos (JMK) to Kos (KGS)](https://www.expedia.com/lp/flights/jmk/kgs/mykonos-to-kos) - [Flights from Salt Lake City (SLC) to Kos (KGS)](https://www.expedia.com/lp/flights/slc/kgs/salt-lake-city-to-kos) - [Flights from Berlin (BER) to Kos (KGS)](https://www.expedia.com/lp/flights/ber/kgs/berlin-to-kos) - [Flights from Nice (NCE) to Kos (KGS)](https://www.expedia.com/lp/flights/nce/kgs/nice-to-kos) - [Flights from Amsterdam (AMS) to Kos (KGS)](https://www.expedia.com/lp/flights/ams/kgs/amsterdam-to-kos) - [Flights from Orlando (MCO) to Kos (KGS)](https://www.expedia.com/lp/flights/mco/kgs/orlando-to-kos) - [Flights from Omaha (OMA) to Kos (KGS)](https://www.expedia.com/lp/flights/oma/kgs/omaha-to-kos) - [Flights from San Francisco (SFO) to Kos (KGS)](https://www.expedia.com/lp/flights/sfo/kgs/san-francisco-to-kos) - [Flights from Tampa (TPA) to Kos (KGS)](https://www.expedia.com/lp/flights/tpa/kgs/tampa-to-kos) - [Flights from London (LHR) to Kos (KGS)](https://www.expedia.com/lp/flights/lhr/kgs/london-to-kos) - [Flights from Baltimore (BWI) to Kos (KGS)](https://www.expedia.com/lp/flights/bwi/kgs/baltimore-to-kos) - [Flights from Florence (FLR) to Kos (KGS)](https://www.expedia.com/lp/flights/flr/kgs/florence-to-kos) - [Flights from Patras (GPA) to Kos (KGS)](https://www.expedia.com/lp/flights/gpa/kgs/patras-to-kos) - [Flights from Heraklion (HER) to Kos (KGS)](https://www.expedia.com/lp/flights/her/kgs/heraklion-to-kos) - [Flights from Chios (JKH) to Kos (KGS)](https://www.expedia.com/lp/flights/jkh/kgs/chios-to-kos) \*Available to One Key members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/lp/flights/den/kgs/denver-to-kos en-AU: https://www.expedia.com.au/lp/flights/den/kgs/denver-to-kos it-IT: https://www.expedia.it/lp/voli/den/kgs/denver-a-kos fr-FR: https://www.expedia.fr/lp/vols/den/kgs/denver-a-kos es: https://www.expedia.com/es/lp/vuelos/den/kgs/denver-a-cos es-ES: https://www.expedia.es/lp/vuelos/den/kgs/denver-a-cos en-US: https://www.expedia.com/lp/flights/den/kgs/denver-to-kos de-AT: https://www.expedia.at/lp/fluge/den/kgs/denver-nach-kos de-DE: https://www.expedia.de/lp/fluge/den/kgs/denver-nach-kos en-IN: https://www.expedia.co.in/lp/flights/den/kgs/denver-to-kos sv-SE: https://www.expedia.se/lp/flyg/den/kgs/denver-till-kos es-MX: https://www.expedia.mx/lp/vuelos/den/kgs/denver-a-cos ar: https://www.expedia.sa/lp/flights/den/kgs/denver-to-kos en-SG: https://www.expedia.com.sg/lp/flights/den/kgs/denver-to-kos nl-NL: https://www.expedia.nl/lp/vluchten/den/kgs/denver-naar-kos ```