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Cheap flights from Belfast to Washington, D.C. from £287

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to Washington, D.C. departing on 24/8. 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 to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:10 - 22:15
BFS
-
BWI
21h 05m
2 stops
Multiple Airlines Logo
20:30 - 20:40
BWI
-
BFS
19h 10m
2 stops
£668Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
Multiple Airlines Logo
21:10 - 15:45
BFS
-
IAD
23h 35m
2 stops
Multiple Airlines Logo
17:15 - 23:15
IAD
-
BFS
25h 00m
2 stops
£669Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
British Airways Logo
11:35 - 23:33
BHD
-
DCA
16h 58m
2 stops
British Airways Logo
18:23 - 15:30
DCA
-
BHD
16h 07m
2 stops
£689British Airways
Wed, 5 Aug - Mon, 10 Aug
Multiple Airlines Logo
22:45 - 15:24
BFS
-
IAD
21h 39m
2 stops
Multiple Airlines Logo
20:30 - 22:20
IAD
-
BFS
20h 50m
3 stops
£695Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
Multiple Airlines Logo
21:10 - 15:45
BFS
-
IAD
23h 35m
2 stops
Multiple Airlines Logo
17:15 - 19:15
IAD
-
BFS
21h 00m
2 stops
£712Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
Multiple Airlines Logo
05:55 - 21:14
BFS
-
IAD
20h 19m
3 stops
Multiple Airlines Logo
20:30 - 22:20
IAD
-
BFS
20h 50m
3 stops
£715Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
Multiple Airlines Logo
07:20 - 20:24
BFS
-
IAD
18h 04m
2 stops
Multiple Airlines Logo
20:30 - 21:50
IAD
-
BFS
20h 20m
2 stops
£829Multiple Airlines
Fri, 14 Aug - Fri, 21 Aug
Multiple Airlines Logo
07:20 - 20:24
BFS
-
IAD
18h 04m
2 stops
Multiple Airlines Logo
17:05 - 23:20
IAD
-
BFS
25h 15m
3 stops
£830Multiple Airlines
Fri, 14 Aug - Fri, 21 Aug
Multiple Airlines Logo
07:35 - 21:14
BFS
-
IAD
18h 39m
3 stops
Multiple Airlines Logo
21:45 - 16:10
IAD
-
BFS
13h 25m
2 stops
£835Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
Multiple Airlines Logo
07:20 - 11:13
BFS
-
IAD
32h 53m
3 stops
Multiple Airlines Logo
17:05 - 23:20
IAD
-
BFS
25h 15m
3 stops
£941Multiple Airlines
Fri, 14 Aug - Fri, 21 Aug

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Customise your flight search to find flights from Belfast 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 4 July 2026.
Use the filters below to find and compare flights from Belfast 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 12/8

06:10-22:15

2 stops21h 05m

Baltimore/Washington

Wed 19/8

20:30-20:40

2 stops19h 10m

£668

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 12/8

21:10-15:45

2 stops23h 35m

Washington, D.C. Dulles Intl

Wed 19/8

17:15-23:15

2 stops25h 00m

£669

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Wed 5/8

11:35-23:33

2 stops16h 58m

Washington, D.C. Reagan-National

Mon 10/8

18:23-15:30

2 stops16h 07m

£689

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 12/8

22:45-15:24

2 stops21h 39m

Washington, D.C. Dulles Intl

Wed 19/8

20:30-22:20

3 stops20h 50m

£695

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 12/8

21:10-15:45

2 stops23h 35m

Washington, D.C. Dulles Intl

Wed 19/8

17:15-19:15

2 stops21h 00m

£712

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 12/8

05:55-21:14

3 stops20h 19m

Washington, D.C. Dulles Intl

Wed 19/8

20:30-22:20

3 stops20h 50m

£715

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 14/8

07:20-20:24

2 stops18h 04m

Washington, D.C. Dulles Intl

Fri 21/8

20:30-21:50

2 stops20h 20m

£829

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 14/8

07:20-20:24

2 stops18h 04m

Washington, D.C. Dulles Intl

Fri 21/8

17:05-23:20

3 stops25h 15m

£830
Fastest return journey

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 12/8

07:35-21:14

3 stops18h 39m

Washington, D.C. Dulles Intl

Wed 19/8

21:45-16:10

2 stops13h 25m

£835

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 14/8

07:20-11:13

3 stops32h 53m

Washington, D.C. Dulles Intl

Fri 21/8

17:05-23:20

3 stops25h 15m

£941

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Belfast to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Belfast to Washington, D.C.?

British Airways is the most popular carrier operating from Belfast to Washington, D.C.

Cheap Belfast to Washington, D.C. flight deals and tips

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

Fastest flight time

14h 35m

Direct flights

None
The fastest flight from Belfast to Washington, D.C. takes 14h 35m
There are no direct flights from Belfast to Washington, D.C.. There are no popular flight routes from Belfast to Washington, D.C..
Search flight deals

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

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

    Belfast and Washington, D.C. are 3373.5 mi apart from one another. By plane, this route typically takes 14h 35m.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Washington, D.C..

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

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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.?

Finding the right flight to Washington, D.C. from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Flights from Belfast to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Belfast.

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 simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Belfast and alert you 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