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Cheap flights from Northern Ireland to Washington, D.C. from £504

This is the cheapest return 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 5/3. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
08:50 - 19:55
BFS
-
IAD
16h 05m1 stop
Multiple Airlines Logo
19:20 - 20:20
IAD
-
BFS
21h 00m1 stop
£504Multiple Airlines
Thu, 5 Mar - Thu, 12 Mar
British Airways Logo
09:05 - 15:35
BHD
-
IAD
11h 30m1 stop
British Airways Logo
19:20 - 10:20
IAD
-
BHD
11h 00m1 stop
£510British Airways
Thu, 5 Mar - Thu, 12 Mar
Multiple Airlines Logo
09:25 - 21:00
BFS
-
IAD
40h 35m3 stops
Multiple Airlines Logo
19:40 - 12:45
IAD
-
BFS
12h 05m2 stops
£513Multiple Airlines
Tue, 17 Feb - Tue, 24 Feb
Multiple Airlines Logo
07:55 - 15:15
BFS
-
IAD
36h 20m3 stops
Multiple Airlines Logo
19:40 - 22:50
IAD
-
BFS
22h 10m3 stops
£522Multiple Airlines
Wed, 4 Feb - Wed, 11 Feb
American Airlines Logo
08:45 - 15:35
BHD
-
IAD
11h 50m1 stop
American Airlines Logo
22:45 - 16:35
IAD
-
BHD
13h 50m1 stop
£531American Airlines
Fri, 6 Mar - Wed, 11 Mar
Multiple Airlines Logo
07:55 - 18:30
BFS
-
IAD
15h 35m2 stops
Multiple Airlines Logo
19:40 - 16:10
IAD
-
BFS
15h 30m2 stops
£531Multiple Airlines
Wed, 4 Feb - Wed, 11 Feb
American Airlines Logo
11:25 - 23:34
BHD
-
IAD
17h 09m2 stops
American Airlines Logo
19:20 - 09:10
IAD
-
BHD
9h 50m1 stop
£536American Airlines
Wed, 4 Mar - Wed, 11 Mar
KLM Logo
06:30 - 16:05
BHD
-
IAD
14h 35m1 stop
KLM Logo
19:59 - 16:50
IAD
-
BHD
16h 51m2 stops
£537KLM
Thu, 5 Mar - Wed, 11 Mar
Delta Logo
17:20 - 16:28
BHD
-
IAD
28h 08m2 stops
Delta Logo
17:11 - 16:50
IAD
-
BHD
18h 39m2 stops
£542Delta
Tue, 17 Feb - Tue, 24 Feb
KLM Logo
06:30 - 16:35
BHD
-
IAD
15h 05m2 stops
KLM Logo
19:59 - 16:50
IAD
-
BHD
16h 51m2 stops
£565KLM
Fri, 6 Mar - Wed, 11 Mar

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

Our best British Airways deals on Northern Ireland to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
5 Mar
BHD09:05Belfast City
11h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
12 Mar
IAD19:20Washington, D.C. Dulles Intl
11h 00m
1 stop
BHD10:20Belfast City
£510
Find similar
British Airways
7 Mar
BHD09:15Belfast City
11h 20m
1 stop
IAD15:35Washington, D.C. Dulles Intl
15 Mar
IAD16:46Washington, D.C. Dulles Intl
13h 34m
2 stops
BHD10:20Belfast City
£534
Find similar
British Airways
30 Jan
BHD08:20Belfast City
16h 35m
2 stops
IAD19:55Washington, D.C. Dulles Intl
3 Feb
IAD13:08Washington, D.C. Dulles Intl
16h 22m
2 stops
BHD10:30Belfast City
£555
Find similar

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
6 Mar
BHD08:45Belfast City
11h 50m
1 stop
IAD15:35Washington, D.C. Dulles Intl
11 Mar
IAD22:45Washington, D.C. Dulles Intl
13h 50m
1 stop
BHD16:35Belfast City
£531
Find similar
American Airlines
4 Mar
BHD11:25Belfast City
17h 09m
2 stops
IAD23:34Washington, D.C. Dulles Intl
11 Mar
IAD19:20Washington, D.C. Dulles Intl
9h 50m
1 stop
BHD09:10Belfast City
£536
Find similar
American Airlines
2 Mar
BHD11:30Belfast City
13h 25m
1 stop
IAD19:55Washington, D.C. Dulles Intl
13 Mar
IAD22:45Washington, D.C. Dulles Intl
11h 30m
1 stop
BHD14:15Belfast City
£553
Find similar

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 22 December 2025.
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

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 5/3

08:50-19:55

1 stop16h 05m

Washington, D.C. Dulles Intl

Thu 12/3

19:20-20:20

1 stop21h 00m

£504

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 5/3

09:05-15:35

1 stop11h 30m

Washington, D.C. Dulles Intl

Thu 12/3

19:20-10:20

1 stop11h 00m

£510

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 17/2

09:25-21:00

3 stops40h 35m

Washington, D.C. Dulles Intl

Tue 24/2

19:40-12:45

2 stops12h 05m

£513

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 4/2

07:55-15:15

3 stops36h 20m

Washington, D.C. Dulles Intl

Wed 11/2

19:40-22:50

3 stops22h 10m

£522

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 6/3

08:45-15:35

1 stop11h 50m

Washington, D.C. Dulles Intl

Wed 11/3

22:45-16:35

1 stop13h 50m

£531

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 4/2

07:55-18:30

2 stops15h 35m

Washington, D.C. Dulles Intl

Wed 11/2

19:40-16:10

2 stops15h 30m

£531

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 4/3

11:25-23:34

2 stops17h 09m

Washington, D.C. Dulles Intl

Wed 11/3

19:20-09:10

1 stop9h 50m

£536

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 5/3

06:30-16:05

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 11/3

19:59-16:50

2 stops16h 51m

£537

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 17/2

17:20-16:28

2 stops28h 08m

Washington, D.C. Dulles Intl

Tue 24/2

17:11-16:50

2 stops18h 39m

£542

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 6/3

06:30-16:35

2 stops15h 05m

Washington, D.C. Dulles Intl

Wed 11/3

19:59-16:50

2 stops16h 51m

£565

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is at midday when flights can be purchased for as low as £713. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £799.

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 50m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. Dulles Intl Airport takes 11h 50m
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.
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  • 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
Laurel
College Park
Alexandria
Fairfax
Arlington
Linthicum Heights
Bethesda
Glen Burnie
Lutherville Timonium
Front Royal
Winchester
Ellicott City
Cambridge
Westminster
Woodbridge
Ashburn
Sterling
Silver Spring
Owings Mills
National Harbor

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.

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