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Cheap flights from Belfast to Washington, D.C. from £297

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 13/9. 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.
British Airways Logo
08:45 - 16:35
BHD
-
IAD
11h 50m
1 stop
British Airways Logo
22:45 - 14:15
IAD
-
BHD
11h 30m
1 stop
£564British Airways
Tue, 27 Oct - Fri, 30 Oct
British Airways Logo
20:35 - 18:55
BHD
-
IAD
27h 20m
2 stops
British Airways Logo
19:15 - 10:30
IAD
-
BHD
10h 15m
1 stop
£585British Airways
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
20:35 - 18:55
BHD
-
IAD
27h 20m
2 stops
British Airways Logo
19:15 - 10:30
IAD
-
BHD
10h 15m
1 stop
£587British Airways
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
06:30 - 17:15
BHD
-
BWI
15h 45m
1 stop
British Airways Logo
21:35 - 14:35
BWI
-
BHD
12h 00m
1 stop
£593British Airways
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
10:05 - 20:20
BHD
-
IAD
15h 15m
1 stop
British Airways Logo
22:25 - 17:40
IAD
-
BHD
14h 15m
1 stop
£593British Airways
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
06:30 - 17:15
BHD
-
BWI
15h 45m
1 stop
British Airways Logo
21:35 - 14:35
BWI
-
BHD
12h 00m
1 stop
£595British Airways
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
10:05 - 20:20
BHD
-
IAD
15h 15m
1 stop
British Airways Logo
22:25 - 17:40
IAD
-
BHD
14h 15m
1 stop
£595British Airways
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
06:30 - 17:15
BHD
-
BWI
15h 45m
1 stop
British Airways Logo
21:35 - 14:35
BWI
-
BHD
12h 00m
1 stop
£596British Airways
Wed, 2 Sep - Sun, 6 Sep
Multiple Airlines Logo
06:35 - 19:45
BHD
-
BWI
17h 10m
1 stop
Multiple Airlines Logo
21:35 - 14:15
BWI
-
BHD
12h 40m
1 stop
£725Multiple Airlines
Tue, 27 Oct - Fri, 30 Oct
KLM Logo
09:40 - 22:55
BHD
-
BWI
17h 15m
2 stops
KLM Logo
14:10 - 09:10
BWI
-
BHD
15h 00m
2 stops
£1,234KLM
Tue, 27 Oct - Fri, 30 Oct

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

Our best British Airways deals on Belfast to Washington, D.C. flight tickets
British Airways
27 Oct
BHD08:45Belfast City
11h 50m
1 stop
IAD16:35Washington, D.C. Dulles Intl
30 Oct
IAD22:45Washington, D.C. Dulles Intl
11h 30m
1 stop
BHD14:15Belfast City
£564
British Airways
2 Sept
BHD20:35Belfast City
27h 20m
2 stops
IAD18:55Washington, D.C. Dulles Intl
6 Sept
IAD19:15Washington, D.C. Dulles Intl
10h 15m
1 stop
BHD10:30Belfast City
£585
British Airways
2 Sept
BHD20:35Belfast City
27h 20m
2 stops
IAD18:55Washington, D.C. Dulles Intl
6 Sept
IAD19:15Washington, D.C. Dulles Intl
10h 15m
1 stop
BHD10:30Belfast City
£587

KLM flights from Belfast to Washington, D.C.

Our best KLM deals on Belfast to Washington, D.C. flight tickets
KLM
23 Jun
BHD17:30Belfast City
27h 05m
1 stop
IAD15:35Washington, D.C. Dulles Intl
11 Aug
IAD17:40Washington, D.C. Dulles Intl
18h 15m
1 stop
BHD16:55Belfast City
£656
KLM
23 Jun
BHD09:50Belfast City
10h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
11 Aug
IAD17:40Washington, D.C. Dulles Intl
18h 15m
1 stop
BHD16:55Belfast City
£657
KLM
27 Oct
BHD09:40Belfast City
17h 15m
2 stops
BWI22:55Baltimore/Washington
30 Oct
BWI14:10Baltimore/Washington
15h 00m
2 stops
BHD09:10Belfast City
£1,234

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 15 June 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
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 27/10

08:45-16:35

1 stop11h 50m

Washington, D.C. Dulles Intl

Fri 30/10

22:45-14:15

1 stop11h 30m

£564

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 2/9

20:35-18:55

2 stops27h 20m

Washington, D.C. Dulles Intl

Sun 6/9

19:15-10:30

1 stop10h 15m

£585

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 2/9

20:35-18:55

2 stops27h 20m

Washington, D.C. Dulles Intl

Sun 6/9

19:15-10:30

1 stop10h 15m

£587

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 2/9

06:30-17:15

1 stop15h 45m

Baltimore/Washington

Sun 6/9

21:35-14:35

1 stop12h 00m

£593

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 2/9

10:05-20:20

1 stop15h 15m

Washington, D.C. Dulles Intl

Sun 6/9

22:25-17:40

1 stop14h 15m

£593

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 2/9

06:30-17:15

1 stop15h 45m

Baltimore/Washington

Sun 6/9

21:35-14:35

1 stop12h 00m

£595

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 2/9

10:05-20:20

1 stop15h 15m

Washington, D.C. Dulles Intl

Sun 6/9

22:25-17:40

1 stop14h 15m

£595

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 2/9

06:30-17:15

1 stop15h 45m

Baltimore/Washington

Sun 6/9

21:35-14:35

1 stop12h 00m

£596

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 27/10

06:35-19:45

1 stop17h 10m

Baltimore/Washington

Fri 30/10

21:35-14:15

1 stop12h 40m

£725

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 27/10

09:40-22:55

2 stops17h 15m

Baltimore/Washington

Fri 30/10

14:10-09:10

2 stops15h 00m

£1,234

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.?

American Airlines and British Airways 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

11h 50m

Direct flights

None
The fastest flight from Belfast to Washington, D.C. takes 11h 50m
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 11h 50m.

  • 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
Ellicott City
Cambridge
Glen Burnie
Laurel
Westminster
Lutherville Timonium
Lexington Park
Owings Mills
Woodbridge
Bethesda
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.
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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