Cheap flights from Northern Ireland to Washington, D.C. from £303

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 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
Voted winner of Europe's Best Travel App 2023

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

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
16:05 - 19:40
BHD
-
BWI
32h 35m
1 stop
British Airways Logo
13:53 - 10:30
BWI
-
BHD
15h 37m
2 stops
£595British Airways
Wed, 30 Sep - Sun, 4 Oct
British Airways Logo
07:05 - 19:40
BHD
-
IAD
17h 35m
1 stop
British Airways Logo
22:25 - 15:20
IAD
-
BHD
11h 55m
1 stop
£595British Airways
Sat, 5 Sep - Tue, 8 Sep
British Airways Logo
07:05 - 19:40
BHD
-
IAD
17h 35m
1 stop
British Airways Logo
17:34 - 18:55
IAD
-
BHD
20h 21m
2 stops
£597British Airways
Sat, 5 Sep - Tue, 8 Sep
British Airways Logo
20:35 - 16:30
BHD
-
BWI
24h 55m
2 stops
British Airways Logo
13:53 - 17:40
BWI
-
BHD
22h 47m
2 stops
£599British Airways
Wed, 30 Sep - Sun, 4 Oct
British Airways Logo
07:05 - 19:10
BHD
-
IAD
17h 05m
2 stops
British Airways Logo
17:34 - 18:55
IAD
-
BHD
20h 21m
2 stops
£601British Airways
Sat, 5 Sep - Tue, 8 Sep
British Airways Logo
19:40 - 18:50
BHD
-
IAD
28h 10m
2 stops
British Airways Logo
19:15 - 10:30
IAD
-
BHD
10h 15m
1 stop
£629British Airways
Wed, 7 Oct - Sun, 11 Oct
British Airways Logo
19:40 - 18:50
BHD
-
IAD
28h 10m
2 stops
British Airways Logo
19:15 - 10:30
IAD
-
BHD
10h 15m
1 stop
£631British Airways
Wed, 7 Oct - Sun, 11 Oct
British Airways Logo
18:20 - 18:50
BHD
-
IAD
29h 30m
2 stops
British Airways Logo
20:25 - 12:55
IAD
-
BHD
35h 30m
2 stops
£633British Airways
Wed, 7 Oct - Sun, 11 Oct
Multiple Airlines Logo
07:10 - 19:20
BFS
-
IAD
17h 10m
2 stops
Multiple Airlines Logo
20:30 - 21:30
IAD
-
BFS
20h 00m
2 stops
£686Multiple Airlines
Sun, 9 Aug - Sun, 16 Aug
Aer Lingus Logo
10:05 - 19:40
BHD
-
BWI
14h 35m
1 stop
Aer Lingus Logo
21:30 - 20:35
BWI
-
BHD
18h 05m
1 stop
£1,531Aer Lingus
Wed, 15 Jul - Thu, 16 Jul

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

British Airways flights from Northern Ireland to Washington, D.C.

Our best British Airways deals on Northern Ireland to Washington, D.C. flight tickets
British Airways
5 Sept
BHD07:05Belfast City
17h 35m
1 stop
IAD19:40Washington, D.C. Dulles Intl
8 Sept
IAD22:25Washington, D.C. Dulles Intl
11h 55m
1 stop
BHD15:20Belfast City
£595
British Airways
5 Sept
BHD07:05Belfast City
17h 35m
1 stop
IAD19:40Washington, D.C. Dulles Intl
8 Sept
IAD17:34Washington, D.C. Dulles Intl
20h 21m
2 stops
BHD18:55Belfast City
£597
British Airways
30 Sept
BHD20:35Belfast City
24h 55m
2 stops
BWI16:30Baltimore/Washington
4 Oct
BWI13:53Baltimore/Washington
22h 47m
2 stops
BHD17:40Belfast City
£599

Aer Lingus flights from Northern Ireland to Washington, D.C.

Our best Aer Lingus deals on Northern Ireland to Washington, D.C. flight tickets
Aer Lingus
15 Jul
BHD14:55Belfast City
29h 50m
2 stops
IAD15:45Washington, D.C. Dulles Intl
16 Jul
IAD20:40Washington, D.C. Dulles Intl
16h 10m
2 stops
BHD17:50Belfast City
£989
Aer Lingus
15 Jul
BHD10:05Belfast City
14h 35m
1 stop
BWI19:40Baltimore/Washington
16 Jul
BWI21:30Baltimore/Washington
18h 05m
1 stop
BHD20:35Belfast City
£1,531

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 29 June 2026.
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

Cheapest return flight

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 30/9

16:05-19:40

1 stop32h 35m

Baltimore/Washington

Sun 4/10

13:53-10:30

2 stops15h 37m

£595
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 5/9

07:05-19:40

1 stop17h 35m

Washington, D.C. Dulles Intl

Tue 8/9

22:25-15:20

1 stop11h 55m

£595

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 5/9

07:05-19:40

1 stop17h 35m

Washington, D.C. Dulles Intl

Tue 8/9

17:34-18:55

2 stops20h 21m

£597

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 30/9

20:35-16:30

2 stops24h 55m

Baltimore/Washington

Sun 4/10

13:53-17:40

2 stops22h 47m

£599

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 5/9

07:05-19:10

2 stops17h 05m

Washington, D.C. Dulles Intl

Tue 8/9

17:34-18:55

2 stops20h 21m

£601

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 7/10

19:40-18:50

2 stops28h 10m

Washington, D.C. Dulles Intl

Sun 11/10

19:15-10:30

1 stop10h 15m

£629

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 7/10

19:40-18:50

2 stops28h 10m

Washington, D.C. Dulles Intl

Sun 11/10

19:15-10:30

1 stop10h 15m

£631

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 7/10

18:20-18:50

2 stops29h 30m

Washington, D.C. Dulles Intl

Sun 11/10

20:25-12:55

2 stops35h 30m

£633

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 9/8

07:10-19:20

2 stops17h 10m

Washington, D.C. Dulles Intl

Sun 16/8

20:30-21:30

2 stops20h 00m

£686

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 15/7

10:05-19:40

1 stop14h 35m

Baltimore/Washington

Thu 16/7

21:30-20:35

1 stop18h 05m

£1,531

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 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 airline that flies from Northern Ireland to Washington, D.C.?

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

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.

Fastest flight time

14h 10m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. takes 14h 10m
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..

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

  • 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 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.

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 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

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 29/7
Wed 5/8

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.