Title: $230 Cheap flights from Washington to Sofia (IAD to SOF) - Expedia.com ![Ivan Vazov National Theatre which includes heritage architecture](https://images.trvl-media.com/place/6097820/e84c7119-8c1f-4bb6-91b5-7cb881e80956.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6097820/e84c7119-8c1f-4bb6-91b5-7cb881e80956.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $230 Cheap Flights from Washington (IAD) to Sofia (SOF) [View $230 flight on Tue, May 12, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:IAD,to:SOF,departure:5/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:229.40&airProductToken=AQpmCjEIwoIBEgMyOTAYiBgg64kBKLPpjAMw9eyMAzhPQABYAWoFTk9CQUdyCE9MWDlDOUJWCjEIwoIBEgM4OTIY64kBINIrKLLwjAMw-vGMAzhPQAFYAWoFTk9CQUdyCE9MWDlDOUJWEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) - [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 Add a place to stay Direct flights only ## Popular airlines from Washington Dulles Intl. Airport (IAD) to Sofia Airport (SOF) - ![](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:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&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_AC.svg) Air Canada [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&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_LH.svg) Lufthansa [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&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:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&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:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&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_TP.svg) TAP Portugal [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) - ![](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:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](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 Washington to Sofia (IAD-SOF) Prices were available within the past 7 days and start at $230 for one-way flights and $519 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Wed, May 6 - Tue, Dec 22 IAD Washington SOF Sofia $519 Roundtrip found 10 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:5/6/2026TANYT&leg2=from:SOF,to:IAD,departure:12/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:518.13&airProductToken=AQprCjMIzJABEgM0MTUYiBggjBUorKeMAzCWq4wDOExAAFgBaghFQ09MSUdIVHIITExJOTBVQlEKNAjMkAESBDE3MDYYjBUg0iso566MAzDar4wDOExAAVgBaghFQ09MSUdIVHIITExJOTBVQlEKawo0CMyQARIEMTQzMRjSKyClBCi6uKADMNW5oAM4TEAAWAFqCEVDT0xJR0hUcghMTEk5MFVCUQozCMyQARIDNDE4GKUEIIgYKIu8oAMwosCgAzhMQAFYAWoIRUNPTElHSFRyCExMSTkwVUJREgoIARABGAEqAkxIGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Dec 2 - Wed, Dec 16 IAD Washington SOF Sofia $519 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:12/2/2026TANYT&leg2=from:SOF,to:IAD,departure:12/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:518.13&airProductToken=AQqDAQo_CNWCARIEODc4NBiIGCCMFSjL4p4DMKvmngM4TEAAWAFqCEVDT0JBU0lDcghMTEk5MFVCUXoJCMyQARIDNDE1CkAI1YIBEgQ5MTM0GIwVINIrKMbnngMwtOieAzhMQAFYAWoIRUNPQkFTSUNyCExMSTkwVUJRegoIzJABEgQxNzA0CncKQAjVggESBDkyNjkY0isgpQQo-vSfAzCV9p8DOExAAFgBaghFQ09CQVNJQ3IITExJOTBVQlF6CgjMkAESBDE0MzEKMwjVggESAzk4OBilBCCIGCj2958DMJf8nwM4TEABWAFqCEVDT0JBU0lDcghMTEk5MFVCURIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Mon, Jul 27 - Wed, Nov 4 IAD Washington SOF Sofia $520 Roundtrip found 15 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:7/27/2026TANYT&leg2=from:SOF,to:IAD,departure:11/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:519.73&airProductToken=AQp2CjIIzLABEgI3MxiIGCC5PCj0wJMDMNnEkwM4TEAAWAFqCEVDT0xJR0hUcghMTEk5MFVCUQpACMywARIEMTM5MBi5PCDSKyixzpMDMLjPkwM4TEABWAFqCEVDT0xJR0hUcghMTEk5MFVCUXoKCLKYARIEMTM5MAprCjQIzJABEgQxNDMxGNIrIKUEKLqcnAMw1Z2cAzhMQABYAWoIRUNPTElHSFRyCExMSTkwVUJRCjMIzJABEgM0MTgYpQQgiBgoi6CcAzCipJwDOExAAVgBaghFQ09MSUdIVHIITExJOTBVQlESCggBEAEYASoCTFgYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Dec 2 - Wed, Dec 16 IAD Washington SOF Sofia $522 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:12/2/2026TANYT&leg2=from:SOF,to:IAD,departure:12/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:521.43&airProductToken=AQpuCjQI1YIBEgI1MhiIGCC5PCiB4J4DMPDjngM4TEAAWAFqCjFfYmFzaWNlY29yCExMSTkwVUJRCjYIzLABEgQxMzkwGLk8INIrKPTlngMw--aeAzhMQABYAWoKMV9iYXNpY2Vjb3IITExJOTBVQlEKiAEKQgjVggESBDkyNDUY0isgjBUo0PifAzDS-Z8DOExAAFgBagoxX2Jhc2ljZWNvcghMTEk5MFVCUXoKCMyQARIEOTI0NQpCCNWCARIEODc4NRiMFSCIGCi7-p8DMOH-nwM4TEAAWAFqCjFfYmFzaWNlY29yCExMSTkwVUJRegoIzJABEgQ4Nzg1EgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Jul 27 - Wed, Nov 4 IAD Washington SOF Sofia $522 Roundtrip found 15 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:7/27/2026TANYT&leg2=from:SOF,to:IAD,departure:11/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:521.53&airProductToken=AQqDAQo_CNWCARIEODc4NBiIGCCMFSjswZMDMNbFkwM4TEAAWAFqCEVDT0JBU0lDcghMTEk5MFVCUXoJCMyQARIDNDE1CkAI1YIBEgQ5MzIwGIwVINIrKKfJkwMwmsqTAzhMQAFYAWoIRUNPQkFTSUNyCExMSTkwVUJRegoIzJABEgQxNzA2CqQBCj0IwYYBEgQ5MDQxGNIrIKUEKLqcnAMw1Z2cAzhMQABYAWoFQkFTSUNyCExMSTkwVUJRegoIzJABEgQxNDMxCjAIwYYBEgM4NDUYpQQgmF0ozZ6cAzC8opwDOExAAVgBagVCQVNJQ3IITExJOTBVQlEKMQjBhgESBDg3MjUYmF0giBgo4KWcAzDSppwDOExAAVgBagVCQVNJQ3IITExJOTBVQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Mon, Jul 27 - Wed, Nov 4 IAD Washington SOF Sofia $524 Roundtrip found 15 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:7/27/2026TANYT&leg2=from:SOF,to:IAD,departure:11/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:523.13&airProductToken=AQp2CjIIzLABEgI3MxiIGCC5PCj0wJMDMNnEkwM4TEAAWAFqCEVDT0xJR0hUcghMTEk5MFVCUQpACMywARIEMTM5MBi5PCDSKyixzpMDMLjPkwM4TEABWAFqCEVDT0xJR0hUcghMTEk5MFVCUXoKCLKYARIEMTM5MAqkAQo9CMGGARIEOTA0MRjSKyClBCi6nJwDMNWdnAM4TEAAWAFqBUJBU0lDcghMTEk5MFVCUXoKCMyQARIEMTQzMQowCMGGARIDODQ1GKUEIJhdKM2enAMwvKKcAzhMQAFYAWoFQkFTSUNyCExMSTkwVUJRCjEIwYYBEgQ4NzI1GJhdIIgYKOClnAMw0qacAzhMQAFYAWoFQkFTSUNyCExMSTkwVUJREgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Mon, Jul 27 - Wed, Nov 4 IAD Washington SOF Sofia $527 Roundtrip found 15 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:7/27/2026TANYT&leg2=from:SOF,to:IAD,departure:11/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:526.43&airProductToken=AQprCjMIzJABEgM0MTUYiBggjBUo7MGTAzDWxZMDOExAAFgBaghFQ09MSUdIVHIITExJOTBVQlEKNAjMkAESBDE3MDYYjBUg0isop8mTAzCaypMDOExAAVgBaghFQ09MSUdIVHIITExJOTBVQlEKpgEKPQjBhgESBDkwNDEY0isgpQQoupycAzDVnZwDOExAAFgBagVCQVNJQ3IITExJOTBVQlF6CgjMkAESBDE0MzEKMQjBhgESAzg0MRilBCCYzgEo4Z6cAzDkopwDOExAAVgBagVCQVNJQ3IITExJOTBVQlEKMgjBhgESBDg2MTgYmM4BIIgYKMOjnAMwnqScAzhMQAFYAWoFQkFTSUNyCExMSTkwVUJREgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Wed, Dec 2 - Wed, Dec 16 IAD Washington SOF Sofia $529 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:12/2/2026TANYT&leg2=from:SOF,to:IAD,departure:12/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:528.03&airProductToken=AQqaAQoyCMGGARIEODYxORiIGCCYzgEoyt-eAzCn4J4DOExAAFgBagVCQVNJQ3IITExJOTBVQlEKMQjBhgESAzg4MBiYzgEguTwoteGeAzCV5Z4DOExAAVgBagVCQVNJQ3IITExJOTBVQlEKMQjMsAESBDEzOTAYuTwg0iso9OWeAzD75p4DOExAAVgBagVCQVNJQ3IITExJOTBVQlEKgwEKQAjVggESBDkyNjkY0isgpQQo-vSfAzCV9p8DOExAAFgBaghFQ09CQVNJQ3IITExJOTBVQlF6CgjMkAESBDE0MzEKPwjVggESBDg4MjcYpQQgiBgoy_ifAzDi_J8DOExAAVgBaghFQ09CQVNJQ3IITExJOTBVQlF6CQjMkAESAzQxOBIKCAEQARgBKgJBQxgBIgQIARABKAIoAygEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Wed, Dec 2 - Wed, Dec 16 IAD Washington SOF Sofia $530 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:12/2/2026TANYT&leg2=from:SOF,to:IAD,departure:12/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:529.73&airProductToken=AQqaAQoyCMGGARIEODYxORiIGCCYzgEoyt-eAzCn4J4DOExAAFgBagVCQVNJQ3IITExJOTBVQlEKMQjBhgESAzg4MBiYzgEguTwoteGeAzCV5Z4DOExAAVgBagVCQVNJQ3IITExJOTBVQlEKMQjMsAESBDEzOTAYuTwg0iso9OWeAzD75p4DOExAAVgBagVCQVNJQ3IITExJOTBVQlEKgwEKQAjVggESBDkyNDUY0isgjBUo0PifAzDS-Z8DOExAAFgBaghFQ09CQVNJQ3IITExJOTBVQlF6CgjMkAESBDE3MDMKPwjVggESBDg3ODUYjBUgiBgou_qfAzDh_p8DOExAAVgBaghFQ09CQVNJQ3IITExJOTBVQlF6CQjMkAESAzQxNBIKCAEQARgBKgJBQxgBIgQIARABKAIoAygEMAE) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Wed, Dec 2 - Wed, Dec 16 IAD Washington SOF Sofia $540 Roundtrip found 12 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:SOF,departure:12/2/2026TANYT&leg2=from:SOF,to:IAD,departure:12/16/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:539.63&airProductToken=AQppCjIIz6YBEgI0MhiIGCCVIiiz4J4DMKLkngM4TEAAWAFqCEVDT0xJR0hUcghMTEk5MFVCUQozCM-mARIDNzc1GJUiINIrKMbnngMwoOieAzhMQAFYAWoIRUNPTElHSFRyCExMSTkwVUJRCncKQAjVggESBDkxMzUY0isgjBUo8PSfAzDy9Z8DOExAAFgBaghFQ09CQVNJQ3IITExJOTBVQlF6CgjMkAESBDE3MDcKMwjVggESAzEwORiMFSCIGCie-J8DMNP8nwM4TEABWAFqCEVDT0JBU0lDcghMTEk5MFVCURIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ## Alternative airports near Sofia Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) SOF Sofia Airport CheapestClosest 11 min [Flights from $628 ](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SOF,departure:2/19/2026TANYT&leg2=from:SOF,to:IAD,departure:2/27/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Washington (IAD) to Sofia (SOF) ### November is typically the cheapest month to fly From $527 - $1,027 per traveler. __Flights from Washington (IAD) to Sofia (SOF)__ | Origin airport | Washington Dulles Intl. | | ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Sofia | | Airlines serving | Air Canada, Air France, Austrian Airlines, British Airways, Emirates, ITA Airways, Iberia, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United | | Roundtrip price | $518 | | Distance | 4934 mi | ## Washington to Sofia Flights The cheapest times to fly from Washington to Sofia 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 Washington to Sofia are during the month of May. You can find some of the cheapest flights from Washington to Sofia with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Sofia Sunday is one of the best days to book for cheap flights from Washington to Sofia: 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 Washington to Sofia 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 Washington to Sofia in 2026\. You can also book with separate airlines for your outbound and return journeys, from $230 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 Washington to Sofia 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 Washington to Sofia 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 Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF) cost? ### What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? ### Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? > - Swiss International Air Lines > - Turkish Airlines > - Lufthansa > - United Airlines > - Austrian Airlines > - Air Canada > - British Airways > - TAP Portugal > - Air France > - KLM > > > First class is available with Lufthansa and Swiss International Air Lines. ### How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF) flight with Expedia? ### Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF) at the last minute? ### Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF) flight and hotel package? ### Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Sofia (SOF)? \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Packages - Cars - [Hotels near Sofia Airport Terminal 2 Station ](https://www.expedia.com/Sofia-Airport-Terminal-2-Station-Hotels.d6345199.Travel-Guide-Hotels) - [Gay friendly Hotels in Slatina ](https://www.expedia.com/Slatina-Sofia-Hotels-LGBT-Welcoming-Hotel.0-n553248635974587263-0-tLGBTWelcomingHotel.Travel-Guide-Filter-Hotels) - 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