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Cheap flights from Northern Ireland to Washington, D.C. from £285

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Washington, D.C. departing on 22/9. 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
0 bags

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Find the cheapest flights from Northern Ireland to Washington, D.C.

Cheap return flights

Logo
07:25 - 15:20BFS-IAD
36h 55m3 stops
Logo
17:00 - 21:30IAD-BFS
23h 30m3 stops
£466
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Logo
22:55 - 17:40BFS-BWI
23h 45m2 stops
Logo
18:50 - 16:40BWI-BFS
16h 50m2 stops
£474
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Logo
07:25 - 15:20BFS-IAD
36h 55m3 stops
Logo
17:00 - 19:25IAD-BFS
21h 25m2 stops
£501
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Logo
16:40 - 17:40BFS-BWI
30h 00m3 stops
Logo
18:50 - 16:40BWI-BFS
16h 50m2 stops
£553
Find Deal
Tue, 7 Oct - Tue, 14 Oct
American Airlines Logo
11:05 - 19:55BHD-IAD
13h 50m1 stop
American Airlines Logo
13:58 - 10:40IAD-BHD
15h 42m2 stops
£568American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
09:05 - 22:10BHD-DCA
18h 05m2 stops
American Airlines Logo
17:15 - 14:15DCA-BHD
16h 00m2 stops
£572American Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
American Airlines Logo
10:40 - 23:59BHD-IAD
18h 19m2 stops
American Airlines Logo
14:16 - 10:40IAD-BHD
15h 24m2 stops
£572American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
Logo
16:40 - 15:50BFS-IAD
28h 10m2 stops
Logo
21:00 - 16:40IAD-BFS
14h 40m2 stops
£703
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Logo
16:40 - 19:45BFS-BWI
32h 05m3 stops
Logo
21:35 - 22:45BWI-BFS
20h 10m3 stops
£838
Find Deal
Tue, 7 Oct - Tue, 14 Oct

American Airlines flights from Northern Ireland to Washington, D.C.

Our best American Airlines deals on Northern Ireland to Washington, D.C. flight tickets
American Airlines
20 Nov
BHD11:05Belfast City
13h 50m
1 stop
IAD19:55Washington, D.C. Dulles Intl
24 Nov
IAD13:58Washington, D.C. Dulles Intl
15h 42m
2 stops
BHD10:40Belfast City
£568
Find similar
American Airlines
20 Nov
BHD10:40Belfast City
18h 19m
2 stops
IAD23:59Washington, D.C. Dulles Intl
24 Nov
IAD14:16Washington, D.C. Dulles Intl
15h 24m
2 stops
BHD10:40Belfast City
£572
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland 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 25 August 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 7/10

07:25-15:20

3 stops36h 55m

Washington, D.C. Dulles Intl

Tue 14/10

17:00-21:30

3 stops23h 30m

£466

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 7/10

22:55-17:40

2 stops23h 45m

Baltimore/Washington

Tue 14/10

18:50-16:40

2 stops16h 50m

£474

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 7/10

07:25-15:20

3 stops36h 55m

Washington, D.C. Dulles Intl

Tue 14/10

17:00-19:25

2 stops21h 25m

£501

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 7/10

16:40-17:40

3 stops30h 00m

Baltimore/Washington

Tue 14/10

18:50-16:40

2 stops16h 50m

£553

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

11:05-19:55

1 stop13h 50m

Washington, D.C. Dulles Intl

Mon 24/11

13:58-10:40

2 stops15h 42m

£568

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/12

09:05-22:10

2 stops18h 05m

Washington, D.C. Reagan-National

Mon 8/12

17:15-14:15

2 stops16h 00m

£572

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

10:40-23:59

2 stops18h 19m

Washington, D.C. Dulles Intl

Mon 24/11

14:16-10:40

2 stops15h 24m

£572

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 7/10

16:40-15:50

2 stops28h 10m

Washington, D.C. Dulles Intl

Tue 14/10

21:00-16:40

2 stops14h 40m

£703

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 7/10

16:40-19:45

3 stops32h 05m

Baltimore/Washington

Tue 14/10

21:35-22:45

3 stops20h 10m

£838

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 22/9

21:00-15:20

3 stops47h 20m

£285

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Northern Ireland 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 day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Northern Ireland is on a Friday. momondo users have found tickets for Friday departures for as low as £733. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Northern Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,036.

Cheap Northern Ireland to Washington, D.C. flight deals and tips

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

Direct flights

None
There are no direct flights from Northern Ireland to Washington, D.C.. There are no popular flight routes from Northern Ireland to Washington, D.C..
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  • When did momondo last update prices for flights from Northern Ireland to Washington, D.C.?

    Prices for flights from Northern Ireland to Washington, D.C. are refreshed on a daily basis.

  • How many operators does momondo search for flights from Northern Ireland to Washington, D.C.?

  • How old do you have to be to fly from Northern Ireland 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 Northern Ireland 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.

Best airlines flying from Northern Ireland to Washington, D.C.

Compare and see reviews for airlines that fly from Northern Ireland to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £608Free CancellationRating
6.7
7,305 reviews
Search British Airways flights

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
Essex
Alexandria
Fairfax
Manassas
Bethesda
Oxon Hill
College Park
Linthicum Heights
Gettysburg
Hanover
Cambridge
Ellicott City
Westminster
Arlington
Woodbridge
Owings Mills
Silver Spring
National Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland 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 Northern Ireland to Washington, D.C. for you.

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

momondo does allow users to show only those flights to Washington, D.C. from Northern Ireland which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Washington, D.C. from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Northern Ireland to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Northern Ireland 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

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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