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Cheap flights from Belfast Intl Airport to Washington, D.C. from £486

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 6/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
21:35 - 19:25
BFS
-
BWI
26h 50m
2 stops
Multiple Airlines Logo
20:30 - 20:15
BWI
-
BFS
18h 45m
2 stops
£486Multiple Airlines
Wed, 6 May - Wed, 13 May
Multiple Airlines Logo
08:20 - 19:25
BFS
-
BWI
16h 05m
2 stops
Multiple Airlines Logo
23:20 - 20:55
BWI
-
BFS
16h 35m
2 stops
£566Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
08:00 - 19:00
BFS
-
IAD
40h 00m
3 stops
Multiple Airlines Logo
17:05 - 15:15
IAD
-
BFS
17h 10m
2 stops
£662Multiple Airlines
Tue, 23 Jun - Tue, 11 Aug
Multiple Airlines Logo
08:00 - 19:00
BFS
-
IAD
40h 00m
3 stops
Multiple Airlines Logo
17:05 - 23:20
IAD
-
BFS
25h 15m
3 stops
£678Multiple Airlines
Tue, 23 Jun - Tue, 11 Aug
Multiple Airlines Logo
08:50 - 20:35
BFS
-
IAD
40h 45m
3 stops
Multiple Airlines Logo
15:45 - 16:20
IAD
-
BFS
19h 35m
3 stops
£721Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
08:50 - 20:35
BFS
-
IAD
40h 45m
3 stops
Multiple Airlines Logo
16:05 - 16:20
IAD
-
BFS
19h 15m
2 stops
£728Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
21:25 - 15:45
BFS
-
IAD
23h 20m
2 stops
Multiple Airlines Logo
21:05 - 21:20
IAD
-
BFS
19h 15m
2 stops
£781Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
21:35 - 19:40
BFS
-
BWI
27h 05m
1 stop
Multiple Airlines Logo
09:51 - 15:15
BWI
-
BFS
24h 24m
2 stops
£793Multiple Airlines
Wed, 6 May - Wed, 13 May
Multiple Airlines Logo
21:25 - 22:43
BFS
-
DCA
30h 18m
3 stops
Multiple Airlines Logo
09:40 - 20:55
DCA
-
BFS
30h 15m
3 stops
£805Multiple Airlines
Mon, 27 Apr - Mon, 4 May
Multiple Airlines Logo
16:00 - 19:25
BFS
-
BWI
32h 25m
2 stops
Multiple Airlines Logo
20:30 - 23:20
BWI
-
BFS
21h 50m
3 stops
£945Multiple Airlines
Tue, 28 Apr - Tue, 5 May

momondo Fare Finder

 
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 31 March 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

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Wed 6/5

21:35-19:25

2 stops26h 50m

Baltimore/Washington

Wed 13/5

20:30-20:15

2 stops18h 45m

£486
Fastest return journey

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 12/5

08:20-19:25

2 stops16h 05m

Baltimore/Washington

Tue 19/5

23:20-20:55

2 stops16h 35m

£566

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 23/6

08:00-19:00

3 stops40h 00m

Washington, D.C. Dulles Intl

Tue 11/8

17:05-15:15

2 stops17h 10m

£662

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 23/6

08:00-19:00

3 stops40h 00m

Washington, D.C. Dulles Intl

Tue 11/8

17:05-23:20

3 stops25h 15m

£678

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 12/5

08:50-20:35

3 stops40h 45m

Washington, D.C. Dulles Intl

Tue 19/5

15:45-16:20

3 stops19h 35m

£721

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 12/5

08:50-20:35

3 stops40h 45m

Washington, D.C. Dulles Intl

Tue 19/5

16:05-16:20

2 stops19h 15m

£728

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 12/5

21:25-15:45

2 stops23h 20m

Washington, D.C. Dulles Intl

Tue 19/5

21:05-21:20

2 stops19h 15m

£781

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Wed 6/5

21:35-19:40

1 stop27h 05m

Baltimore/Washington

Wed 13/5

09:51-15:15

2 stops24h 24m

£793

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Mon 27/4

21:25-22:43

3 stops30h 18m

Washington, D.C. Reagan-National

Mon 4/5

09:40-20:55

3 stops30h 15m

£805

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 28/4

16:00-19:25

2 stops32h 25m

Baltimore/Washington

Tue 5/5

20:30-23:20

3 stops21h 50m

£945

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

11h 55m

Direct flights

None
The fastest flight from Belfast Intl Airport to Washington, D.C. takes 11h 55m
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..
Search flight deals

  • 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. 11h 55m 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.

  • 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
College Park
Fairfax
Arlington
Linthicum Heights
Glen Burnie
Laurel
Lutherville Timonium
Ellicott City
Cambridge
Lexington Park
Westminster
Woodbridge
Bethesda
Alexandria
Silver Spring
Rockville
Owings Mills
Landover
National Harbor

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.
Start using Trips
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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