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Cheap flights from Belfast Intl Airport to Washington, D.C. from £679

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to Washington, D.C. departing on 6/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Belfast Intl Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
21:05 - 21:26
BFS
-
IAD
29h 21m
3 stops
Multiple Airlines Logo
17:05 - 15:15
IAD
-
BFS
17h 10m
2 stops
£679Multiple Airlines
Thu, 6 Aug - Tue, 11 Aug
Multiple Airlines Logo
20:15 - 22:15
BFS
-
BWI
31h 00m
3 stops
Multiple Airlines Logo
20:30 - 22:40
BWI
-
BFS
21h 10m
2 stops
£699Multiple Airlines
Sat, 29 Aug - Sat, 5 Sep
Multiple Airlines Logo
21:30 - 22:15
BFS
-
BWI
29h 45m
3 stops
Multiple Airlines Logo
20:30 - 21:30
BWI
-
BFS
20h 00m
3 stops
£725Multiple Airlines
Sat, 29 Aug - Sat, 5 Sep
Multiple Airlines Logo
06:10 - 22:15
BFS
-
BWI
21h 05m
2 stops
Multiple Airlines Logo
20:30 - 22:25
BWI
-
BFS
20h 55m
2 stops
£736Multiple Airlines
Thu, 6 Aug - Tue, 11 Aug
Multiple Airlines Logo
06:10 - 19:20
BFS
-
IAD
18h 10m
2 stops
Multiple Airlines Logo
23:20 - 22:25
IAD
-
BFS
18h 05m
2 stops
£742Multiple Airlines
Thu, 6 Aug - Tue, 11 Aug
Multiple Airlines Logo
08:30 - 19:25
BFS
-
BWI
15h 55m
2 stops
Multiple Airlines Logo
20:30 - 22:40
BWI
-
BFS
21h 10m
2 stops
£887Multiple Airlines
Sat, 29 Aug - Sat, 5 Sep
Multiple Airlines Logo
08:20 - 21:13
BFS
-
IAD
17h 53m
3 stops
Multiple Airlines Logo
09:45 - 15:15
IAD
-
BFS
24h 30m
3 stops
£909Multiple Airlines
Thu, 6 Aug - Tue, 11 Aug
Multiple Airlines Logo
07:30 - 16:05
BFS
-
IAD
13h 35m
1 stop
Multiple Airlines Logo
21:45 - 17:40
IAD
-
BFS
14h 55m
2 stops
£2,017Multiple Airlines
Thu, 6 Aug - Tue, 11 Aug

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Customise your flight search to find flights from Belfast Intl Airport to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 17 July 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 6/8

21:05-21:26

3 stops29h 21m

Washington, D.C. Dulles Intl

Tue 11/8

17:05-15:15

2 stops17h 10m

£679

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Sat 29/8

20:15-22:15

3 stops31h 00m

Baltimore/Washington

Sat 5/9

20:30-22:40

2 stops21h 10m

£699

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Sat 29/8

21:30-22:15

3 stops29h 45m

Baltimore/Washington

Sat 5/9

20:30-21:30

3 stops20h 00m

£725

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Thu 6/8

06:10-22:15

2 stops21h 05m

Baltimore/Washington

Tue 11/8

20:30-22:25

2 stops20h 55m

£736

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 6/8

06:10-19:20

2 stops18h 10m

Washington, D.C. Dulles Intl

Tue 11/8

23:20-22:25

2 stops18h 05m

£742

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Sat 29/8

08:30-19:25

2 stops15h 55m

Baltimore/Washington

Sat 5/9

20:30-22:40

2 stops21h 10m

£887

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 6/8

08:20-21:13

3 stops17h 53m

Washington, D.C. Dulles Intl

Tue 11/8

09:45-15:15

3 stops24h 30m

£909
Fastest return journey

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 6/8

07:30-16:05

1 stop13h 35m

Washington, D.C. Dulles Intl

Tue 11/8

21:45-17:40

2 stops14h 55m

£2,017

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Belfast Intl Airport to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Belfast Intl Airport to Washington, D.C. (BFS to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast Intl Airport to Washington, D.C.

Fastest flight time

14h 30m

Direct flights

None
The fastest flight from Belfast Intl Airport to Washington, D.C. takes 14h 30m
There are no direct flights from Belfast Intl Airport to Washington, D.C.. There are no popular flight routes from Belfast Intl Airport to Washington, D.C..
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Frequently asked questions about flying from Belfast Intl Airport to Washington, D.C.

  • How far is Belfast Intl to Washington, D.C. by plane?

    The straight-line distance from Belfast Intl to Washington, D.C. is 3361.5 mi. 14h 30m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Belfast Intl Airport to Washington, D.C.?

    Prices for flights from Belfast Intl Airport to Washington, D.C. refresh daily.

  • How old do you have to be to fly from Belfast Intl Airport to Washington, D.C.?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast Intl Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Belfast Intl Airport to Washington, D.C.

  • How do I get Price Alerts for flights from Belfast Intl Airport to Washington, D.C.?

    Search flight deals from Belfast Intl Airport to Washington, D.C.. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Belfast Intl Airport to Washington, D.C. with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
College Park
Springfield
Fairfax
Arlington
Gettysburg
Linthicum Heights
National Harbor
Ellicott City
Cambridge
Glen Burnie
Westminster
Laurel
Lutherville Timonium
Lexington Park
Owings Mills
Woodbridge
Bethesda
Silver Spring
Rockville

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Belfast to Washington, D.C. for you.

Can I find flights from Belfast to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Belfast to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Belfast to Washington, D.C.?

momondo helps you find the best flight between Belfast and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Belfast to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Belfast to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport