Title: CA $252 Cheap United fights from Buffalo to Washington - Expedia.ca ![Washington DC in Spring](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $252 Cheap United fights from Buffalo (BUF) to Washington (IAD) [View CA $252 flight on Sun, Jan 18, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:BUF,to:IAD,departure:18/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:251.80&airProductToken=AQpsCjQI1YIBEgQ0NTQ5GIEtIMSNASiU4YIDMPjhggM4R0AAWAFqB0VDT05PTVlyCEdBQTJKSERTCjQI1YIBEgQxOTkyGMSNASCIGCiw5YIDMIXmggM4R0ABWAFqB0VDT05PTVlyCEdBQTJQRkROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers 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 - ![notification illustration](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\* - ![deals illustration](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\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## United flights from Buffalo to Washington (BUF→IAD) Prices were available within the past 7 days and start at CA $252 for one-way flights and CA $330 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, Jan 11 - Tue, Jan 27 BUF Buffalo IAD Washington CA $330 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BUF,to:IAD,departure:11/01/2026TANYT&leg2=from:IAD,to:BUF,departure:27/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:329.20&airProductToken=AQoiCiAI1YIBEgQ0MjkxGIEtIIgYKMWWggMwn5eCAzhLQABYAQoiCiAI1YIBEgQ0MzM1GIgYIIEtKMTJgwMwosqDAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jan 6 - Mon, Jan 19 BUF Buffalo IAD Washington CA $331 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BUF,to:IAD,departure:06/01/2026TANYT&leg2=from:IAD,to:BUF,departure:19/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:330.30&airProductToken=AQoiCiAI1YIBEgQ0OTM1GIEtIIgYKJ3cgQMw99yBAzhLQABYAQoiCiAI1YIBEgQ0ODIzGIgYIIEtKPjxggMw2fKCAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jan 20 - Tue, Feb 3 BUF Buffalo IAD Washington CA $345 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BUF,to:IAD,departure:20/01/2026TANYT&leg2=from:IAD,to:BUF,departure:03/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:344.30&airProductToken=AQozCjEI1YIBEgQ0OTM1GIEtIIgYKL_5ggMwofqCAzhLQABYAWoFMl9lY29yCEtGQTJBREROCjMKMQjVggESBDQzMzUYiBgggS0opJiEAzCCmYQDOEtAAFgBagUyX2Vjb3IIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jan 20 - Tue, Feb 3 BUF Buffalo IAD Washington CA $351 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BUF,to:IAD,departure:20/01/2026TANYT&leg2=from:IAD,to:BUF,departure:03/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:350.70&airProductToken=AQozCjEI1YIBEgQ0MjkxGIEtIIgYKOX7ggMwv_yCAzhMQABYAWoFMl9lY29yCExGQTRBREROCjMKMQjVggESBDQ4MjMYiBgggS0o2JqEAzC5m4QDOEtAAFgBagUyX2Vjb3IIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, Dec 25 - Sun, Jan 4 BUF Buffalo IAD Washington CA $372 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BUF,to:IAD,departure:25/12/2025TANYT&leg2=from:IAD,to:BUF,departure:04/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:371.20&airProductToken=AQoiCiAI1YIBEgQzNDk5GIEtIIgYKKHVgAMw99WAAzhMQABYAQoiCiAI1YIBEgQzNTg1GIgYIIEtKODEgQMwtsWBAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, Dec 18 - Wed, Dec 31 BUF Buffalo IAD Washington CA $373 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BUF,to:IAD,departure:18/12/2025TANYT&leg2=from:IAD,to:BUF,departure:31/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:372.20&airProductToken=AQoiCiAI1YIBEgQ0OTM1GIEtIIgYKMGGgAMwl4eAAzhMQABYAQoiCiAI1YIBEgQzNTg1GIgYIIEtKOCXgQMwtpiBAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ## Find the cheapest month to fly from Buffalo (BUF) to Washington (IAD) ### April is typically the cheapest month to fly From CA $193 - CA $593 per traveller. ## Alternative airports near Washington Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:BUF,to:DCA,departure:30/12/2025TANYT&leg2=from:DCA,to:BUF,departure:04/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) DCA Ronald Reagan Washington National CheapestClosest 8 min [Flights from CA $795 ](https://www.expedia.ca/Flights-Search?leg1=from:BUF,to:DCA,departure:30/12/2025TANYT&leg2=from:DCA,to:BUF,departure:04/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flight from Buffalo to Washington (BUF - IAD) route information__ | Origin airport | Buffalo Niagara Intl. | | ------------------- | -------------------------------- | | Destination airport | Washington Dulles Intl. | | Airlines serving | American Airlines, Delta, United | | Popular airline | Delta | | Distance | 452 km | | Average flight time | 1 hour 26 mins | ## Explore a world of travel with Expedia - Lodging - 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