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Cheap flights from Northern Ireland to Washington, D.C. from £477

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 29/7. 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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0 bags
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Find the cheapest flights from Northern Ireland to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
16:25 - 20:20
BHD
-
IAD
32h 55m
1 stop
American Airlines Logo
22:25 - 17:35
IAD
-
BHD
14h 10m
1 stop
£778American Airlines
Tue, 23 Jun - Tue, 11 Aug
Multiple Airlines Logo
15:35 - 17:00
BFS
-
IAD
30h 25m
2 stops
Multiple Airlines Logo
20:20 - 23:15
IAD
-
BFS
21h 55m
2 stops
£778Multiple Airlines
Thu, 11 Jun - Wed, 17 Jun
American Airlines Logo
16:25 - 20:20
BHD
-
IAD
32h 55m
1 stop
American Airlines Logo
17:34 - 15:20
IAD
-
BHD
16h 46m
2 stops
£780American Airlines
Tue, 23 Jun - Tue, 11 Aug
Multiple Airlines Logo
06:40 - 19:00
BFS
-
IAD
17h 20m
2 stops
Multiple Airlines Logo
17:15 - 18:55
IAD
-
BFS
20h 40m
2 stops
£791Multiple Airlines
Thu, 25 Jun - Thu, 2 Jul
Multiple Airlines Logo
06:10 - 20:29
BFS
-
IAD
19h 19m
3 stops
Multiple Airlines Logo
08:18 - 19:15
IAD
-
BFS
29h 57m
3 stops
£792Multiple Airlines
Thu, 11 Jun - Wed, 17 Jun
British Airways Logo
09:40 - 15:50
BHD
-
IAD
11h 10m
1 stop
British Airways Logo
17:45 - 09:00
IAD
-
BHD
10h 15m
1 stop
£840British Airways
Tue, 23 Jun - Tue, 11 Aug
British Airways Logo
09:40 - 15:50
BHD
-
IAD
11h 10m
1 stop
British Airways Logo
17:45 - 10:45
IAD
-
BHD
12h 00m
1 stop
£850British Airways
Tue, 23 Jun - Tue, 11 Aug
KLM Logo
17:30 - 15:35
BHD
-
IAD
27h 05m
1 stop
KLM Logo
12:29 - 09:20
IAD
-
BHD
15h 51m
2 stops
£1,130KLM
Tue, 23 Jun - Tue, 11 Aug
Delta Logo
09:50 - 15:35
BHD
-
IAD
10h 45m
1 stop
Delta Logo
12:29 - 09:20
IAD
-
BHD
15h 51m
2 stops
£1,133Delta
Tue, 23 Jun - Tue, 11 Aug
KLM Logo
09:50 - 19:35
BHD
-
IAD
14h 45m
2 stops
KLM Logo
12:29 - 09:20
IAD
-
BHD
15h 51m
2 stops
£1,261KLM
Tue, 23 Jun - Tue, 11 Aug

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

Our best American Airlines deals on Northern Ireland to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
23 Jun
BHD16:25Belfast City
32h 55m
1 stop
IAD20:20Washington, D.C. Dulles Intl
11 Aug
IAD22:25Washington, D.C. Dulles Intl
14h 10m
1 stop
BHD17:35Belfast City
£778
American Airlines
23 Jun
BHD16:25Belfast City
32h 55m
1 stop
IAD20:20Washington, D.C. Dulles Intl
11 Aug
IAD17:34Washington, D.C. Dulles Intl
16h 46m
2 stops
BHD15:20Belfast City
£780
American Airlines
23 Jun
BHD09:40Belfast City
12h 50m
1 stop
IAD17:30Washington, D.C. Dulles Intl
11 Aug
IAD22:25Washington, D.C. Dulles Intl
11h 55m
1 stop
BHD15:20Belfast City
£842

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

Our best Aer Lingus deals on Northern Ireland to Washington, D.C. Dulles Intl Airport flight tickets
Aer Lingus
21 May
BHD09:50Belfast City
14h 20m
2 stops
IAD19:10Washington, D.C. Dulles Intl
22 May
IAD20:55Washington, D.C. Dulles Intl
19h 20m
2 stops
BHD21:15Belfast City
£1,372
Aer Lingus
13 Sept
BHD07:00Belfast City
17h 25m
2 stops
IAD19:25Washington, D.C. Dulles Intl
15 Sept
IAD21:05Washington, D.C. Dulles Intl
13h 15m
2 stops
BHD15:20Belfast City
£3,394
Aer Lingus
13 Sept
BHD11:10Belfast City
14h 10m
1 stop
IAD20:20Washington, D.C. Dulles Intl
15 Sept
IAD21:05Washington, D.C. Dulles Intl
13h 15m
2 stops
BHD15:20Belfast City
£3,473

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Washington, D.C. Dulles Intl Airport 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 16 May 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

16:25-20:20

1 stop32h 55m

Washington, D.C. Dulles Intl

Tue 11/8

22:25-17:35

1 stop14h 10m

£778

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/6

15:35-17:00

2 stops30h 25m

Washington, D.C. Dulles Intl

Wed 17/6

20:20-23:15

2 stops21h 55m

£778

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

16:25-20:20

1 stop32h 55m

Washington, D.C. Dulles Intl

Tue 11/8

17:34-15:20

2 stops16h 46m

£780

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 25/6

06:40-19:00

2 stops17h 20m

Washington, D.C. Dulles Intl

Thu 2/7

17:15-18:55

2 stops20h 40m

£791

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/6

06:10-20:29

3 stops19h 19m

Washington, D.C. Dulles Intl

Wed 17/6

08:18-19:15

3 stops29h 57m

£792
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

09:40-15:50

1 stop11h 10m

Washington, D.C. Dulles Intl

Tue 11/8

17:45-09:00

1 stop10h 15m

£840

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

09:40-15:50

1 stop11h 10m

Washington, D.C. Dulles Intl

Tue 11/8

17:45-10:45

1 stop12h 00m

£850

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

17:30-15:35

1 stop27h 05m

Washington, D.C. Dulles Intl

Tue 11/8

12:29-09:20

2 stops15h 51m

£1,130

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Tue 11/8

12:29-09:20

2 stops15h 51m

£1,133

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

09:50-19:35

2 stops14h 45m

Washington, D.C. Dulles Intl

Tue 11/8

12:29-09:20

2 stops15h 51m

£1,261

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 Northern Ireland to Washington, D.C. Dulles Intl Airport

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. Dulles Intl?

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

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

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

Fastest flight time

11h 10m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. Dulles Intl Airport takes 11h 10m
There are no direct flights from Northern Ireland to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Northern Ireland to Washington, D.C. Dulles Intl Airport.
Search flight deals

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

  • When did momondo last update prices for flights from Northern Ireland to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Northern Ireland to Washington, D.C. Dulles Intl Airport were last updated today.

  • How old do you have to be to fly from Northern Ireland to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport. 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
Front Royal
Glen Burnie
Winchester
Laurel
Ellicott City
Lutherville Timonium
Cambridge
Westminster
Lexington Park
Leesburg
Ashburn
Sterling
Woodbridge

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Northern Ireland to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Washington, D.C. from Northern Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Price alerts on flights to Washington, D.C. from Northern Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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