Title: $598 Cheap flights from Cologne to Chicago (CGN to ORD) - Expedia.com ![City of Chicago. Image of Chicago downtown and Chicago River with bridges at sunny summer day](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $598 Cheap Flights from Cologne (CGN) to Chicago (ORD) [View $598 flight on Fri, May 15, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:CGN,to:ORD,departure:5/15/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:597.33&airProductToken=AQqXAQowCMyQARIEMTk4NRjCaSCMFSjiiI0DMKOJjQM4S0AAWAFqBE1BSU5yCE9MTjVDNU00CjAIwYIBEgM3ODUYjBUg4poBKO6OjQMwvJONAzhPQAFYAWoETUFJTnIIT0xONUM1TTQKMQjBggESBDE0NTIY4poBIK4cKLiUjQMwwZWNAzhPQAFYAWoETUFJTnIIT0xONUM1TTQSDAgBEAEYASoCQUEyABgBIgQIARABKAIoAygEMAE) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Cologne - Bonn Airport (CGN) to Chicago O'Hare Intl. Airport (ORD) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TK.svg) Turkish Airlines [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_OS.svg) Austrian Airlines [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"OS"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:CGN,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:CGN,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### 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 Cologne to Chicago (CGN-ORD) Prices were available within the past 7 days and start at $598 for one-way flights and $566 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Sun, Mar 15 - Sun, Mar 22 CGN Cologne ORD Chicago $566 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/15/2026TANYT&leg2=from:ORD,to:CGN,departure:3/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:565.63&airProductToken=AQppCjMIz6YBEgMyNTAYwmkglSIol9uHAzDx24cDOEtAAFgBaghFQ09MSUdIVHIIS1BWUEFYQlEKMgjPpgESAjQ1GJUiIK4cKPPhhwMw0OaHAzhLQAFYAWoIRUNPTElHSFRyCEtQVlBBWEJRCmsKMwjMkAESAzQzNRiuHCCMFSjmrYgDMNqxiAM4S0AAWAFqCEVDT0xJR0hUcghLUFZQQVhCUQo0CMyQARIEMTk4NBiMFSDCaSiJs4gDMMqziAM4S0ABWAFqCEVDT0xJR0hUcghLUFZQQVhCURIKCAIQARgCKgJPUxgBIgQIARABKAIoAygEMAs) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Thu, Mar 12 - Mon, Mar 16 CGN Cologne ORD Chicago $567 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/12/2026TANYT&leg2=from:ORD,to:CGN,departure:3/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:566.53&airProductToken=AQppCjMIz6YBEgMyNDYYwmkglSIoqLSHAzCCtYcDOEtAAFgBaghFQ09MSUdIVHIIS1BWUEFYQlEKMgjPpgESAjQ1GJUiIK4cKJPAhwMw8MSHAzhLQAFYAWoIRUNPTElHSFRyCEtQVlBBWEJRCmsKMwjMkAESAzQzNRiuHCCMFSim6ocDMJruhwM4S0AAWAFqCEVDT0xJR0hUcghLUFZQQVhCUQo0CMyQARIEMTk4NhiMFSDCaSiy8IcDMPPwhwM4S0ABWAFqCEVDT0xJR0hUcghLUFZQQVhCURIKCAIQARgCKgJPUxgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Mon, Mar 2 - Mon, Mar 16 CGN Cologne ORD Chicago $569 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/2/2026TANYT&leg2=from:ORD,to:CGN,departure:3/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:568.13&airProductToken=AQp3CkAIzJABEgQ0MDUxGMJpIIwVKMTFhgMwgMaGAzhLQABYAWoIRUNPTElHSFRyCEtQVlBBWEJRegoI1pgBEgQxOTc5CjMIzJABEgM0MzQYjBUgrhwoxsaGAzCZy4YDOEtAAVgBaghFQ09MSUdIVHIIS1BWUEFYQlEKgwEKPwjMkAESBDkyNjkYrhwgjBUowOiHAzDD7IcDOEtAAFgBaghFQ09MSUdIVHIIS1BWUEFYQlF6CQjVggESAzk1MwpACMyQARIEMTk3OBiMFSDCaSjF7YcDMIbuhwM4S0ABWAFqCEVDT0xJR0hUcghLUFZQQVhCUXoKCMOYARIEMTk3OBIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Thu, Mar 12 - Mon, Mar 16 CGN Cologne ORD Chicago $570 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/12/2026TANYT&leg2=from:ORD,to:CGN,departure:3/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:569.03&airProductToken=AQprCjQIzJABEgQxOTc5GMJpIIwVKJO2hwMwz7aHAzhLQABYAWoIRUNPTElHSFRyCEtQVlBBWEJRCjMIzJABEgM0MzQYjBUgrhwohreHAzDZu4cDOEtAAVgBaghFQ09MSUdIVHIIS1BWUEFYQlEKawozCMyQARIDNDM1GK4cIIwVKKbqhwMwmu6HAzhLQABYAWoIRUNPTElHSFRyCEtQVlBBWEJRCjQIzJABEgQxOTg2GIwVIMJpKLLwhwMw8_CHAzhLQAFYAWoIRUNPTElHSFRyCEtQVlBBWEJREgoIAhABGAIqAkxIGAEiBAgBEAEoAigDKAQwCw) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Sun, Mar 1 - Mon, Mar 9 CGN Cologne ORD Chicago $570 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/1/2026TANYT&leg2=from:ORD,to:CGN,departure:3/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:569.53&airProductToken=AQppCjMIz6YBEgMyNTAYwmkglSIo172GAzCxvoYDOEtAAFgBaghFQ09MSUdIVHIIS1BWUEFYQlEKMgjPpgESAjQ1GJUiIK4cKLPEhgMwkMmGAzhLQAFYAWoIRUNPTElHSFRyCEtQVlBBWEJRCmkKMgjPpgESAjQ2GK4cIJUiKPyYhwMwiZ2HAzhLQABYAWoIRUNPTElHSFRyCEtQVlBBWEJRCjMIz6YBEgMyNDkYlSIgwmko3KGHAzC7oocDOEtAAVgBaghFQ09MSUdIVHIIS1BWUEFYQlESCggCEAEYAioCT1MYASIECAEQASgCKAMoBDAL) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Sun, Mar 1 - Mon, Mar 9 CGN Cologne ORD Chicago $573 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/1/2026TANYT&leg2=from:ORD,to:CGN,departure:3/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:572.03&airProductToken=AQp3CjQIzJABEgQxOTczGMJpIIwVKKq4hgMw5riGAzhLQABYAWoIRUNPTElHSFRyCEtQVlBBWEJRCj8IzJABEgQ5MjY4GIwVIK4cKLG5hgMw-r2GAzhLQAFYAWoIRUNPTElHSFRyCEtQVlBBWEJRegkI1YIBEgM5NTIKaQoyCM-mARICNDYYrhwglSIo_JiHAzCJnYcDOEtAAFgBaghFQ09MSUdIVHIIS1BWUEFYQlEKMwjPpgESAzI0NRiVIiDCaSj8p4cDMNuohwM4S0ABWAFqCEVDT0xJR0hUcghLUFZQQVhCURIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, Feb 26 - Thu, Mar 5 CGN Cologne ORD Chicago $575 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:2/26/2026TANYT&leg2=from:ORD,to:CGN,departure:3/5/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:574.23&airProductToken=AQqkAQo8CMGGARIENjk1NRjCaSC5PCi5lYYDMPWVhgM4S0AAWAFqBUJBU0lDcghLUFZQQVhCUXoJCMWuARIDNzYyCjEIwYYBEgM4ODEYuTwgmM4BKMSYhgMw5ZyGAzhLQAFYAWoFQkFTSUNyCEtQVlBBWEJRCjEIwYYBEgM1MDkYmM4BIK4cKOydhgMw6Z6GAzhLQAFYAWoFQkFTSUNyCEtQVlBBWEJRCqUBCjEIwYYBEgQ4NDc4GK4cIJhdKNvnhgMw2OiGAzhLQABYAWoFQkFTSUNyCEtQVlBBWEJRCjEIwYYBEgM4NjQYmF0g64kBKOrshgMwjvCGAzhLQAFYAWoFQkFTSUNyCEtQVlBBWEJRCj0IwYYBEgQ2OTQ4GOuJASDCaSip8YYDMP7xhgM4S0ABWAFqBUJBU0lDcghLUFZQQVhCUXoJCMWuARIDNDYxEgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Mon, Mar 2 - Mon, Mar 16 CGN Cologne ORD Chicago $579 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/2/2026TANYT&leg2=from:ORD,to:CGN,departure:3/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:578.73&airProductToken=AQp3CkAIzJABEgQxOTg3GMJpIIwVKOjIhgMwpMmGAzhLQABYAWoIRUNPTElHSFRyCEtQVlBBWEJRegoIw5gBEgQxOTg3CjMIzJABEgM0MzQYjBUgrhwo5tGGAzC51oYDOEtAAVgBaghFQ09MSUdIVHIIS1BWUEFYQlEKdwo_CMyQARIEOTI2ORiuHCCMFSjA6IcDMMPshwM4S0AAWAFqCEVDT0xJR0hUcghLUFZQQVhCUXoJCNWCARIDOTUzCjQIzJABEgQxOTg2GIwVIMJpKLLwhwMw8_CHAzhLQAFYAWoIRUNPTElHSFRyCEtQVlBBWEJREgoIAhABGAIqAkxIGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, May 2 - Thu, May 14 CGN Cologne ORD Chicago $638 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:5/2/2026TANYT&leg2=from:ORD,to:CGN,departure:5/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:637.13&airProductToken=AQpECiAI1YIBEgQ5MTU0GMJpIIwVKIbxiwMwx_GLAzhLQABYAQogCNWCARIEODg1NRiMFSCuHCi09IsDMPP4iwM4S0ABWAEKQwofCNWCARIDOTUzGK4cIIwVKN__jAMw7IONAzhLQABYAQogCNWCARIEOTE1MxiMFSDCaSjGhI0DMIyFjQM4S0ABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Sun, Mar 15 - Sun, Mar 22 CGN Cologne ORD Chicago $735 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CGN,to:ORD,departure:3/15/2026TANYT&leg2=from:ORD,to:CGN,departure:3/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:734.03&airProductToken=AQqoAQoyCMKCARIDOTk5GMJpIOuJASin2YcDMIHahwM4UUAAWAFqBU5PQkFHcglRTE43QzhCV1AKMgjCggESAzExNxjriQEgqVEolOGHAzD05IcDOFFAAVgBagVOT0JBR3IJUUxON0M4QldQCj4IwoIBEgQ0NzAwGKlRIK4cKM_mhwMwhOiHAzhTQAFYAWoFTk9CQUdyCVFMTjdDOEJXUHoKCNmwARIENDcwMApzCj4IwoIBEgQxNTQxGK4cIOuJASibrYgDMPGwiAM4UUAAWAFqBU5PQkFHcghRTE43VDhCV3oKCMGCARIEMTU0MQoxCMKCARIDOTk4GOuJASDCaSjDsogDMJ2ziAM4UUABWAFqBU5PQkFHcghRTE43VDhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Chicago Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:QKL,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:QKL,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ORD O'Hare Intl. Cheapest 23 min [Flights from $590 ](https://www.expedia.com/Flights-Search?leg1=from:QKL,to:ORD,departure:3/4/2026TANYT&leg2=from:ORD,to:QKL,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD) cost? ### What is the cheapest month to fly from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD)? ### What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD)? ### How many flights per day from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD)? ### What day of the week has the most flights from CGN to ORD? ### What is the best time to fly from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD)? ### Is it cheaper to buy a plane ticket from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD) last-minute? ### Is it cheaper to book a CGN to ORD flight and hotel package? ### Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to O'Hare Intl. Airport (ORD)? ## Travel information | Origin airport | Cologne - Bonn | | ------------------- | ---------------------------------------------------------------------------------------------------------- | | Destination airport | O'Hare Intl. | | Airlines serving | Air Canada, Austrian Airlines, British Airways, Lufthansa, Swiss International Air Lines, Turkish Airlines | | Roundtrip price | $566 | | Distance | 4245 mi | ## Book with confidence # Cologne to Chicago Flights The cheapest times to fly from Cologne to Chicago 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 Cologne to Chicago are during the month of March. You can find some of the cheapest flights from Cologne to Chicago with Expedia's search tool and vast selection of airlines. The best time to book a flight from Cologne to Chicago Sunday is one of the best days to book for cheap flights from Cologne to Chicago: 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 Cologne to Chicago 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 Cologne to Chicago in 2026\. You can also book with separate airlines for your outbound and return journeys, from $598 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 Cologne to Chicago 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 Cologne to Chicago 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. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rentals - Other - [Chicago Hotels ](https://www.expedia.com/Chicago-Hotels.d178248.Travel-Guide-Hotels) - [Hotels near Downtown Chicago ](https://www.expedia.com/Downtown-Chicago-Chicago-Hotels.0-n6350699-0.Travel-Guide-Filter-Hotels) - [Hotels near O'Hare Station ](https://www.expedia.com/OHare-Station-Hotels.d6210225.Travel-Guide-Hotels) - [Rosemont Hotels ](https://www.expedia.com/Rosemont-Hotels.d7581.Travel-Guide-Hotels) - [Hotels near Donald E. 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