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Cheap flights from Belfast to Washington, D.C. from £485

This is the cheapest return 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 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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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
21:35 - 19:25
BFS
-
BWI
26h 50m
2 stops
Multiple Airlines Logo
20:30 - 20:15
BWI
-
BFS
18h 45m
2 stops
£485Multiple Airlines
Wed, 6 May - Wed, 13 May
Multiple Airlines Logo
18:50 - 19:25
BHD
-
BWI
29h 35m
2 stops
Multiple Airlines Logo
20:30 - 19:40
BWI
-
BHD
18h 10m
2 stops
£548Multiple Airlines
Wed, 6 May - Wed, 13 May
British Airways Logo
12:40 - 20:10
BHD
-
IAD
12h 30m
1 stop
British Airways Logo
17:35 - 10:45
IAD
-
BHD
12h 10m
1 stop
£595British Airways
Tue, 28 Apr - Tue, 5 May
British Airways Logo
11:35 - 22:29
BHD
-
DCA
15h 54m
2 stops
British Airways Logo
17:31 - 12:55
DCA
-
BHD
14h 24m
2 stops
£611British Airways
Mon, 27 Apr - Mon, 4 May
Multiple Airlines Logo
09:40 - 08:56
BHD
-
BWI
28h 16m
2 stops
Multiple Airlines Logo
18:38 - 18:55
BWI
-
BHD
19h 17m
2 stops
£612Multiple Airlines
Tue, 28 Apr - Tue, 5 May
Multiple Airlines Logo
11:35 - 20:20
BHD
-
IAD
13h 45m
1 stop
Multiple Airlines Logo
20:11 - 19:50
IAD
-
BHD
18h 39m
2 stops
£616Multiple Airlines
Wed, 6 May - Wed, 13 May
Multiple Airlines Logo
07:00 - 22:15
BHD
-
IAD
20h 15m
2 stops
Multiple Airlines Logo
23:20 - 20:35
IAD
-
BHD
16h 15m
2 stops
£619Multiple Airlines
Wed, 24 Jun - Sun, 28 Jun
British Airways Logo
12:40 - 14:41
BHD
-
BWI
31h 01m
2 stops
British Airways Logo
21:30 - 18:55
BWI
-
BHD
16h 25m
1 stop
£621British Airways
Tue, 28 Apr - Tue, 5 May
American Airlines Logo
09:40 - 00:07
BHD
-
BWI
19h 27m
2 stops
American Airlines Logo
19:25 - 10:45
BWI
-
BHD
10h 20m
1 stop
£622American Airlines
Tue, 23 Jun - Tue, 11 Aug
American Airlines Logo
06:30 - 17:13
BHD
-
DCA
15h 43m
2 stops
American Airlines Logo
19:17 - 15:20
DCA
-
BHD
15h 03m
2 stops
£648American Airlines
Tue, 23 Jun - Tue, 11 Aug

British Airways flights from Belfast to Washington, D.C.

Our best British Airways deals on Belfast to Washington, D.C. flight tickets
British Airways
28 Apr
BHD12:40Belfast City
12h 30m
1 stop
IAD20:10Washington, D.C. Dulles Intl
5 May
IAD17:35Washington, D.C. Dulles Intl
12h 10m
1 stop
BHD10:45Belfast City
£595
British Airways
27 Apr
BHD11:35Belfast City
15h 54m
2 stops
DCA22:29Washington, D.C. Reagan-National
4 May
DCA17:31Washington, D.C. Reagan-National
14h 24m
2 stops
BHD12:55Belfast City
£611
British Airways
28 Apr
BHD12:40Belfast City
31h 01m
2 stops
BWI14:41Baltimore/Washington
5 May
BWI21:30Baltimore/Washington
16h 25m
1 stop
BHD18:55Belfast City
£621

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
19h 27m
2 stops
BWI00:07Baltimore/Washington
11 Aug
BWI19:25Baltimore/Washington
10h 20m
1 stop
BHD10:45Belfast City
£622
American Airlines
23 Jun
BHD13:45Belfast City
11h 35m
1 stop
IAD20:20Washington, D.C. Dulles Intl
11 Aug
IAD09:14Washington, D.C. Dulles Intl
20h 31m
2 stops
BHD10:45Belfast City
£634
American Airlines
23 Jun
BHD13:45Belfast City
11h 35m
1 stop
IAD20:20Washington, D.C. Dulles Intl
11 Aug
IAD20:19Washington, D.C. Dulles Intl
16h 16m
2 stops
BHD17:35Belfast City
£636

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 3 April 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 6/5

21:35-19:25

2 stops26h 50m

Baltimore/Washington

Wed 13/5

20:30-20:15

2 stops18h 45m

£485

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 6/5

18:50-19:25

2 stops29h 35m

Baltimore/Washington

Wed 13/5

20:30-19:40

2 stops18h 10m

£548
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 28/4

12:40-20:10

1 stop12h 30m

Washington, D.C. Dulles Intl

Tue 5/5

17:35-10:45

1 stop12h 10m

£595

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 27/4

11:35-22:29

2 stops15h 54m

Washington, D.C. Reagan-National

Mon 4/5

17:31-12:55

2 stops14h 24m

£611

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 28/4

09:40-08:56

2 stops28h 16m

Baltimore/Washington

Tue 5/5

18:38-18:55

2 stops19h 17m

£612

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 6/5

11:35-20:20

1 stop13h 45m

Washington, D.C. Dulles Intl

Wed 13/5

20:11-19:50

2 stops18h 39m

£616

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 24/6

07:00-22:15

2 stops20h 15m

Washington, D.C. Dulles Intl

Sun 28/6

23:20-20:35

2 stops16h 15m

£619

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 28/4

12:40-14:41

2 stops31h 01m

Baltimore/Washington

Tue 5/5

21:30-18:55

1 stop16h 25m

£621

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 23/6

09:40-00:07

2 stops19h 27m

Baltimore/Washington

Tue 11/8

19:25-10:45

1 stop10h 20m

£622

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 23/6

06:30-17:13

2 stops15h 43m

Washington, D.C. Reagan-National

Tue 11/8

19:17-15:20

2 stops15h 03m

£648

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 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

11h 55m

Direct flights

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

  • 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
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.?

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