Title: Cheap Flights to Frederick County - Expedia.co.uk ![Beautiful, easy 2/3 mile hike but absolutely packed with people and unfriendly dogs. ](https://images.trvl-media.com/place/3000347991/3d64cf91-e764-4ad9-91cd-8e04ee41c150.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Willow Rock ![](https://images.trvl-media.com/place/3000347991/3d64cf91-e764-4ad9-91cd-8e04ee41c150.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £384 Cheap Flights to Frederick County [View £384 flight on Wed, 11 Mar 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:IAD,departure:11/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.63&airProductToken=AQpjCjAIxZIBEgMxNTMY64kBIIMNKJKphwMw56mHAzhHQABYAWoEU0FWUnIIT0xYNUM1QjQKLwjFkgESAzExNxiDDSCIGCjfqocDMNOuhwM4T0ABWAFqBFNBVlJyCE9MWDVDNUI0EgoIARABGAEqAkVJGAEiBAgBEAEoAigDKAQwDQ) - [Return](?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 [Frederick County Hotels](https://expedia.co.uk/Destinations-In-Frederick-County.d553248635976434223.Hotel-Destinations)[Holiday Rentals in Frederick County](https://expedia.co.uk/Destinations-In-Frederick-County.d553248635976434223.Holiday-Rental-Destinations)[Frederick County Car Hire](https://expedia.co.uk/Destinations-In-Frederick-County.d553248635976434223.Car-Hire-Destinations)[Frederick County Holidays](https://expedia.co.uk/Frederick-County.d553248635976434223.Holidays-City-Breaks) ## Popular airlines to Frederick County - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines - ![Spirit Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_NK.svg) Spirit Airlines - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines - ![Frontier Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines - ![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 25% 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.co.uk/login) ## Cheap round-trip flights to Frederick County Prices were available within the past 7 days and start at £384 for one-way flights and £350 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, 3 Feb - Mon, 9 Feb LGW London IAD Washington £350 Return found 4 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:IAD,departure:03/02/2026TANYT&leg2=from:IAD,to:LGW,departure:09/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:349.08&airProductToken=AQplCjEIxpIBEgM0NzEYy7EBIIopKMuVhAMwmJeEAzhVQABYAWoFTElHSFRyCFVVMlZHQkxUCjAIxpIBEgM2NDUYiikgiBgo8peEAzCCm4QDOFVAAVgBagVMSUdIVHIIVVUyVkdCTFQKZQowCMaSARIDNjQ0GIgYIIopKIjfhAMw6-GEAzhVQABYAWoFTElHSFRyCFVVMlZHQkxUCjEIxpIBEgM0NzAYiikgy7EBKKzihAMw7-OEAzhVQAFYAWoFTElHSFRyCFVVMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, 3 Feb - Mon, 9 Feb LHR London IAD Washington £352 Return found 4 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:03/02/2026TANYT&leg2=from:IAD,to:LHR,departure:09/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:351.75&airProductToken=AQplCjEIxpIBEgM0NTEY64kBIIopKN-VhAMwopeEAzhVQABYAWoFTElHSFRyCFVVMlZHQkxUCjAIxpIBEgM2NDUYiikgiBgo8peEAzCCm4QDOFVAAVgBagVMSUdIVHIIVVUyVkdCTFQKZQowCMaSARIDNjQ0GIgYIIopKIjfhAMw6-GEAzhVQABYAWoFTElHSFRyCFVVMlZHQkxUCjEIxpIBEgM0NTAYiikg64kBKKfihAMw6uOEAzhVQAFYAWoFTElHSFRyCFVVMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Tue, 17 Mar - Sun, 22 Mar LHR London IAD Washington £397 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:17/03/2026TANYT&leg2=from:IAD,to:LHR,departure:22/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:396.75&airProductToken=AQp4CjQIzLABEgMzNDUY64kBILk8KKjrhwMwjOyHAzhLQABYAWoIRUNPTElHSFRyCEtEVlFBWEJRCkAIzLABEgQzMjAwGLk8IIgYKInthwMwyPGHAzhLQAFYAWoIRUNPTElHSFRyCEtEVlFBWEJRegoI1YIBEgQzMjAwCmoKMgjMsAESAjczGIgYILk8KNqsiAMwv7CIAzhLQABYAWoIRUNPTElHSFRyCEtEVlFBWEJRCjQIzLABEgMzMTgYuTwg64kBKMu7iAMww7yIAzhLQAFYAWoIRUNPTElHSFRyCEtEVlFBWEJREgoIAhABGAIqAkxYGAEiBAgBEAEoAigDKAQwCw) ![TAP Portugal](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TP.gif) Wed, 21 Jan - Sun, 25 Jan LGW London IAD Washington £398 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:IAD,departure:21/01/2026TANYT&leg2=from:IAD,to:LGW,departure:25/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:397.08&airProductToken=AQp4CkEI1KABEgQxMzM3GMuxASCLkgEow4WDAzDthoMDOE9AAFgBagdESVNDSU5UcghPRjBEU0lPQnoKCM6SARIEMTMzNwozCNSgARIDMjMxGIuSASCIGCitjoMDML-SgwM4T0AAWAFqB0RJU0NJTlRyCE9GMERTSU9CCngKMwjUoAESAzIzNBiIGCCLkgEo0reDAzD7uoMDOE9AAFgBagdESVNDSU5UcghPRjBEU0lPQgpBCNSgARIEMTMzNhiLkgEgy7EBKIy8gwMwsb2DAzhPQABYAWoHRElTQ0lOVHIIT0YwRFNJT0J6CgjOkgESBDEzMzYSCggBEAEYASoCVFAYASIECAEQASgCKAMoBDAN) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Tue, 3 Feb - Wed, 11 Feb LHR London IAD Washington £399 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:03/02/2026TANYT&leg2=from:IAD,to:LHR,departure:11/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:398.55&airProductToken=AQpqCjQIz6YBEgMzMzIY64kBIJUiKKGUhAMwqJWEAzhLQABYAWoIRUNPTElHSFRyCEtEVlFBWEJRCjIIz6YBEgI0MRiVIiCIGCjfn4QDMLykhAM4S0ABWAFqCEVDT0xJR0hUcghLRFZRQVhCUQpDCkEIz6YBEgQ3ODA2GIgYIOuJASj49IQDMLD4hAM4S0AAWAFqCEVDT0xJR0hUcghLRFZRQVhCUXoKCNWCARIENzgwNhIKCAIQARgCKgJPUxgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Wed, 18 Mar - Tue, 24 Mar LHR London IAD Washington £401 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:18/03/2026TANYT&leg2=from:IAD,to:LHR,departure:24/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:400.45&airProductToken=AQpsCjUIzJABEgQyNDg1GOuJASCMFSjr9ocDMNn3hwM4S0AAWAFqCEVDT0xJR0hUcghLRFZRQVhCUQozCMyQARIDNDE0GIwVIIgYKJv7hwMwwf-HAzhLQAFYAWoIRUNPTElHSFRyCEtEVlFBWEJRCkMKQQjMkAESBDkyNTkYiBgg64kBKJjCiAMw0MWIAzhLQABYAWoIRUNPTElHSFRyCEtEVlFBWEJRegoI1YIBEgQ5MjU5EgoIAhABGAIqAkxIGAEiBAgBEAEoAigDKAQwCw) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, 13 Mar - Tue, 17 Mar LGW London IAD Washington £402 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:IAD,departure:13/03/2026TANYT&leg2=from:IAD,to:LGW,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:401.18&airProductToken=AQqoAQo-CMGCARIENzAxMhjLsQEgzHAo6MCHAzC2xYcDOE9AAFgBagVCQVNJQ3IIT0xXN0sxQjR6CgjCggESBDcwMTIKMgjBggESBDI4NTQYzHAg4poBKNjGhwMwz8eHAzhCQAFYAWoFQkFTSUNyCE9MVzdLMUI0CjIIwYIBEgQ1MTk0GOKaASCIGCiDzIcDMODMhwM4QkABWAFqBUJBU0lDcghPTFc3SzFCNAqoAQoyCMGCARIENTIwMxiIGCDimgEo4u-HAzDG8IcDOEJAAFgBagVCQVNJQ3IIT0xYN0sxQjQKMgjBggESBDI4MDkY4poBIMxwKIfxhwMw8_GHAzhCQAFYAWoFQkFTSUNyCE9MWDdLMUI0Cj4IwYIBEgQ3MDExGMxwIMuxASiu84cDMKL3hwM4T0ABWAFqBUJBU0lDcghPTFg3SzFCNHoKCMKCARIENzAxMRIKCAIQARgCKgJBQRgBIgQIARABKAIoAygEMAs) ![Brussels Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SN.gif) Fri, 27 Feb - Sat, 25 Apr LHR London IAD Washington £403 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:27/02/2026TANYT&leg2=from:IAD,to:LHR,departure:25/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:402.15&airProductToken=AQp7CjYI05wBEgQyMTA0GOuJASChpAEomqGGAzDboYYDOEtAAFgBaghFQ09MSUdIVHIIS0RWUUFYQlEKQQjTnAESBDg4MDEYoaQBIIgYKI-jhgMwl6eGAzhLQAFYAWoIRUNPTElHSFRyCEtEVlFBWEJRegoI1YIBEgQ4ODAxCoUBCkAI05wBEgQ4OTE3GIgYIINpKJupiwMwlKuLAzhLQABYAWoIRUNPTElHSFRyCEtEVlFBWEJRegoI1YIBEgQ4OTE3CkEI05wBEgQ5MDQzGINpIOuJASjMq4sDMOiviwM4S0ABWAFqCEVDT0xJR0hUcghLRFZRQVhCUXoKCNWCARIEOTA0MxIKCAIQARgCKgJTThgBIgQIARABKAIoAygEMAs) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Sun, 8 Feb - Mon, 16 Feb LHR London IAD Washington £405 Return found 13 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:08/02/2026TANYT&leg2=from:IAD,to:LHR,departure:16/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:404.65&airProductToken=AQpyCjEIwoIBEgM0NTgY64kBIIwYKOLLhAMw-MyEAzhPQABYAWoFTk9CQUdyCE9MVDFLMUI0Cj0IwoIBEgQ0MjU3GIwYIIgYKObNhAMwqtKEAzhPQAFYAWoFTk9CQUdyCE9MVDFLMUI0egoIyYQBEgQ0MjU3CoMBCj8IwoIBEgQ2NzQyGIgYIOKaASi6rIUDMJ2thQM4T0AAWAFqBU5PQkFHcglPTFg3SzFCNFB6CgjPkAESBDY3NDIKQAjCggESBDE1OTcY4poBIOuJASiQroUDMOuxhQM4T0ABWAFqBU5PQkFHcglPTFg3SzFCNFB6CgjBggESBDE1OTcSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Wed, 21 Jan - Tue, 27 Jan LHR London BWI Baltimore £413 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:BWI,departure:21/01/2026TANYT&leg2=from:BWI,to:LHR,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:412.35&airProductToken=AQplCjEIxpIBEgM0NTEY64kBIIopKL-DgwMwgoWDAzhOQABYAWoFTElHSFRyCE5KMk1HQkxUCjAIxpIBEgM2NDMYiikgwUUo3IWDAzDsiIMDOE5AAVgBagVMSUdIVHIITkoyTUdCTFQKZQowCMaSARIDNjQyGMFFIIopKOjMgwMwxs-DAzhOQABYAWoFTElHSFRyCE5KMk1HQkxUCjEIxpIBEgM0NTQYiikg64kBKJTUgwMw0tWDAzhOQAFYAWoFTElHSFRyCE5KMk1HQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ## Trending flights to Frederick County These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, 3 Feb - Mon, 9 Feb LGW London IAD Washington £350 Return found 4 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:IAD,departure:03/02/2026TANYT&leg2=from:IAD,to:LGW,departure:09/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:349.08&airProductToken=AQplCjEIxpIBEgM0NzEYy7EBIIopKMuVhAMwmJeEAzhVQABYAWoFTElHSFRyCFVVMlZHQkxUCjAIxpIBEgM2NDUYiikgiBgo8peEAzCCm4QDOFVAAVgBagVMSUdIVHIIVVUyVkdCTFQKZQowCMaSARIDNjQ0GIgYIIopKIjfhAMw6-GEAzhVQABYAWoFTElHSFRyCFVVMlZHQkxUCjEIxpIBEgM0NzAYiikgy7EBKKzihAMw7-OEAzhVQAFYAWoFTElHSFRyCFVVMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ## Frequently asked questions ### How do I find cheap flights to Frederick County that have flexible change policies? ### Which airlines fly to Frederick County? > - American Airlines - 7,501 flights to or near Frederick County each month, including 7,284 flights to Ronald Reagan Washington National Airport (DCA) and 216 flights to Washington Dulles Intl. Airport (IAD) per month. > - United Airlines - 5,939 flights to or near Frederick County each month, including 5,146 flights to Washington Dulles Intl. Airport (IAD) and 793 flights to Ronald Reagan Washington National Airport (DCA) per month. > - Delta Air Lines - 2,036 flights to or near Frederick County each month, including 1,516 flights to Ronald Reagan Washington National Airport (DCA) and 520 flights to Washington Dulles Intl. Airport (IAD) per month. ### How can I find cheap tickets to Frederick County? ### How much is a flight to Frederick County? ### What are the most popular airports to fly into in Frederick County? > - Ronald Reagan Washington National Airport (DCA) - 11,555 flights per month. > - Washington Dulles Intl. Airport (IAD) - 6,533 flights per month. ### When is the cheapest time to fly to Frederick County? ### How much is a plane ticket to Frederick County? ### What is the best time to go to Frederick County? ### What months are the cheapest to book a flight to Frederick County? ## Book with confidence # Top tips for booking flights to Frederick County from UK ### Get ready to fly to Frederick County Prepare your luggage and book your flights to Frederick County with Expedia. We offer a seamless flight booking experience, with a wide range of Frederick County plane tickets to choose from. If you need help finding some of the best deals for cheap flights to Frederick County in 2026, we are always available to assist you. Book your flights to Frederick County today and let the adventure begin! ### Find the best tickets to Frederick County To find some of the best tickets to Frederick County in 2026, use Expedia's powerful search engine to compare dates and the different departure and arrival airports for your trip. Whether you're after direct flights to Frederick County or last-minute flights to Frederick County, you can filter and sort your search results, making it easy to find the ideal flight to Frederick County. ### Airlines fly to Frederick County There are 20 different airlines that fly to Frederick County including some of the most trusted names in the business. To book flights to Frederick County with your favourite airline, take a look at Expedia's flight listings and try out different dates to find some of the best Frederick County plane tickets. ### Find the cheapest flights to Frederick County By booking early you may find some of the best deals for Frederick County flights from the UK, including Frederick County direct flights. You can usually find affordable and cheap flights to Frederick County, whether one-way from £384 or round-trip from £350, with Expedia if you book your trip far enough in advance. ### Find the best airports for cheap flights to Frederick County Try searching for different Frederick County airports with Expedia to find some of the cheapest flights to Frederick County. Flights from London (LHR) to Washington (IAD) usually have the lowest price from £384. ### Why book your flights to Frederick County with Expedia Expedia offers great deals on Frederick County air fares from £384 to cater to every budget. Not only is Expedia one of the top platforms to book flights to Frederick County from the UK, it is also your one-stop shop for booking hotels, car rentals, and more. \*Prices and availability are subject to change. Additional terms apply. ## Travel information # Frederick County Flights Information | Airlines serving | Icelandair, Aer Lingus, Brussels Airlines, Swiss International Air Lines, TAP Portugal, Austrian Airlines, Lufthansa, American Airlines, British Airways | | ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | | Roundtrip price | from £350 | ## Explore a world of travel with Expedia - Top Flights Destinations - Top Frederick County Hotels - Related Airlines ### Top Flight Destinations In Frederick County - [Flights to Blue Ridge Mountains ](https://expedia.co.uk/Cheap-Flights-To-Blue-Ridge-Mountains.d553248630201287968.Travel-Guide-Flights) - [Flights to Frederick ](https://expedia.co.uk/Cheap-Flights-To-Frederick.d6057476.Travel-Guide-Flights) - [Flights to Hagerstown ](https://expedia.co.uk/Cheap-Flights-To-Hagerstown.d6057475.Travel-Guide-Flights) - [Flights to Appalachian Mountains ](https://expedia.co.uk/Cheap-Flights-To-Appalachian-Mountains.d3000655640.Travel-Guide-Flights) - 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