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Cheap flights from Belfast to Washington, D.C. from £358

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 21/6. 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
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.
American Airlines Logo
09:40 - 19:40
BHD
-
BWI
15h 00m
1 stop
American Airlines Logo
11:59 - 10:45
BWI
-
BHD
17h 46m
2 stops
£701American Airlines
Tue, 23 Jun - Tue, 11 Aug
American Airlines Logo
06:30 - 19:40
BHD
-
BWI
18h 10m
1 stop
American Airlines Logo
19:25 - 10:45
BWI
-
BHD
10h 20m
1 stop
£702American Airlines
Tue, 23 Jun - Tue, 11 Aug
Multiple Airlines Logo
06:40 - 15:45
BFS
-
IAD
14h 05m
2 stops
Multiple Airlines Logo
17:15 - 11:15
IAD
-
BFS
13h 00m
2 stops
£712Multiple Airlines
Thu, 21 May - Mon, 25 May
Multiple Airlines Logo
20:15 - 15:10
BFS
-
IAD
47h 55m
3 stops
Multiple Airlines Logo
20:30 - 20:15
IAD
-
BFS
18h 45m
2 stops
£722Multiple Airlines
Mon, 24 Aug - Sat, 29 Aug
American Airlines Logo
06:30 - 15:50
BHD
-
IAD
14h 20m
1 stop
American Airlines Logo
22:25 - 15:20
IAD
-
BHD
11h 55m
1 stop
£727American Airlines
Tue, 23 Jun - Tue, 11 Aug
Multiple Airlines Logo
07:00 - 15:45
BHD
-
IAD
13h 45m
2 stops
Multiple Airlines Logo
17:15 - 16:30
IAD
-
BHD
18h 15m
2 stops
£731Multiple Airlines
Thu, 21 May - Mon, 25 May
British Airways Logo
10:05 - 00:01
BHD
-
BWI
18h 56m
2 stops
British Airways Logo
20:17 - 12:55
BWI
-
BHD
35h 38m
2 stops
£737British Airways
Wed, 7 Oct - Sun, 11 Oct
American Airlines Logo
06:30 - 19:40
BHD
-
BWI
18h 10m
1 stop
American Airlines Logo
16:25 - 17:35
BWI
-
BHD
20h 10m
2 stops
£752American Airlines
Tue, 23 Jun - Tue, 11 Aug
British Airways Logo
06:30 - 19:40
BHD
-
BWI
18h 10m
1 stop
British Airways Logo
15:54 - 12:55
BWI
-
BHD
16h 01m
2 stops
£763British Airways
Thu, 1 Oct - Mon, 5 Oct
British Airways Logo
09:35 - 00:08
BHD
-
BWI
19h 33m
2 stops
British Airways Logo
20:17 - 15:30
BWI
-
BHD
14h 13m
2 stops
£767British Airways
Thu, 1 Oct - Mon, 5 Oct

KLM flights from Belfast to Washington, D.C.

Our best KLM deals on Belfast to Washington, D.C. flight tickets
KLM
23 Jun
BHD09:50Belfast City
14h 45m
2 stops
IAD19:35Washington, D.C. Dulles Intl
11 Aug
IAD12:29Washington, D.C. Dulles Intl
15h 51m
2 stops
BHD09:20Belfast City
£1,249
KLM
23 Jun
BHD09:50Belfast City
14h 45m
2 stops
IAD19:35Washington, D.C. Dulles Intl
11 Aug
IAD12:29Washington, D.C. Dulles Intl
15h 51m
2 stops
BHD09:20Belfast City
£1,251
KLM
23 Jun
BHD09:50Belfast City
14h 45m
2 stops
IAD19:35Washington, D.C. Dulles Intl
11 Aug
IAD12:29Washington, D.C. Dulles Intl
15h 51m
2 stops
BHD09:20Belfast City
£1,255

American Airlines flights from Belfast to Washington, D.C.

Our best American Airlines deals on Belfast to Washington, D.C. flight tickets
American Airlines
23 Jun
BHD09:40Belfast City
15h 00m
1 stop
BWI19:40Baltimore/Washington
11 Aug
BWI11:59Baltimore/Washington
17h 46m
2 stops
BHD10:45Belfast City
£701
American Airlines
23 Jun
BHD06:30Belfast City
18h 10m
1 stop
BWI19:40Baltimore/Washington
11 Aug
BWI19:25Baltimore/Washington
10h 20m
1 stop
BHD10:45Belfast City
£702
American Airlines
23 Jun
BHD06:30Belfast City
14h 20m
1 stop
IAD15:50Washington, D.C. Dulles Intl
11 Aug
IAD22:25Washington, D.C. Dulles Intl
11h 55m
1 stop
BHD15:20Belfast City
£727

momondo Fare Finder

 
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 9 May 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

BHD - BWI

BHDBWI

Belfast City

Tue 23/6

09:40-19:40

1 stop15h 00m

Baltimore/Washington

Tue 11/8

11:59-10:45

2 stops17h 46m

£701

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 23/6

06:30-19:40

1 stop18h 10m

Baltimore/Washington

Tue 11/8

19:25-10:45

1 stop10h 20m

£702

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 21/5

06:40-15:45

2 stops14h 05m

Washington, D.C. Dulles Intl

Mon 25/5

17:15-11:15

2 stops13h 00m

£712

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 24/8

20:15-15:10

3 stops47h 55m

Washington, D.C. Dulles Intl

Sat 29/8

20:30-20:15

2 stops18h 45m

£722
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

06:30-15:50

1 stop14h 20m

Washington, D.C. Dulles Intl

Tue 11/8

22:25-15:20

1 stop11h 55m

£727

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 21/5

07:00-15:45

2 stops13h 45m

Washington, D.C. Dulles Intl

Mon 25/5

17:15-16:30

2 stops18h 15m

£731

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 7/10

10:05-00:01

2 stops18h 56m

Baltimore/Washington

Sun 11/10

20:17-12:55

2 stops35h 38m

£737

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 23/6

06:30-19:40

1 stop18h 10m

Baltimore/Washington

Tue 11/8

16:25-17:35

2 stops20h 10m

£752

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 1/10

06:30-19:40

1 stop18h 10m

Baltimore/Washington

Mon 5/10

15:54-12:55

2 stops16h 01m

£763

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 1/10

09:35-00:08

2 stops19h 33m

Baltimore/Washington

Mon 5/10

20:17-15:30

2 stops14h 13m

£767

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 and Delta are the most popular carriers 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

13h 30m

Direct flights

None
The fastest flight from Belfast to Washington, D.C. takes 13h 30m
There are no direct flights from Belfast to Washington, D.C.. There are no popular flight routes from Belfast to Washington, D.C..
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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 13h 30m.

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

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