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Cheap flights from District of Columbia to Belfast from £242

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Belfast departing on 12/9. 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 District of Columbia to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:30 - 21:40
IAD
-
BFS
20h 10m
2 stops
Multiple Airlines Logo
21:10 - 19:00
BFS
-
IAD
26h 50m
2 stops
£601Multiple Airlines
Thu, 1 Oct - Thu, 8 Oct
Multiple Airlines Logo
20:30 - 23:15
IAD
-
BFS
21h 45m
3 stops
Multiple Airlines Logo
10:50 - 15:10
BFS
-
IAD
33h 20m
3 stops
£603Multiple Airlines
Wed, 26 Aug - Wed, 9 Sep
Multiple Airlines Logo
19:40 - 20:30
IAD
-
BFS
19h 50m
2 stops
Multiple Airlines Logo
20:00 - 14:45
BFS
-
IAD
47h 45m
3 stops
£605Multiple Airlines
Sun, 6 Dec - Sun, 13 Dec
Multiple Airlines Logo
16:20 - 19:15
IAD
-
BFS
21h 55m
2 stops
Multiple Airlines Logo
10:50 - 20:35
BFS
-
IAD
38h 45m
3 stops
£607Multiple Airlines
Wed, 26 Aug - Wed, 9 Sep
Multiple Airlines Logo
19:40 - 19:45
IAD
-
BFS
19h 05m
2 stops
Multiple Airlines Logo
06:05 - 14:45
BFS
-
IAD
37h 40m
3 stops
£618Multiple Airlines
Wed, 25 Nov - Mon, 30 Nov
Multiple Airlines Logo
20:30 - 19:30
IAD
-
BFS
18h 00m
2 stops
Multiple Airlines Logo
20:40 - 19:00
BFS
-
IAD
27h 20m
3 stops
£623Multiple Airlines
Thu, 1 Oct - Thu, 8 Oct
British Airways Logo
18:20 - 10:15
IAD
-
BHD
10h 55m
1 stop
British Airways Logo
11:30 - 19:55
BHD
-
IAD
13h 25m
1 stop
£688British Airways
Wed, 25 Nov - Mon, 30 Nov
British Airways Logo
21:45 - 16:50
IAD
-
BHD
14h 05m
1 stop
British Airways Logo
06:30 - 15:35
BHD
-
IAD
14h 05m
1 stop
£690British Airways
Sun, 6 Dec - Sun, 13 Dec
British Airways Logo
18:30 - 13:55
DCA
-
BHD
14h 25m
2 stops
British Airways Logo
06:30 - 18:54
BHD
-
DCA
17h 24m
2 stops
£701British Airways
Sun, 6 Dec - Sun, 13 Dec
American Airlines Logo
17:39 - 14:35
DCA
-
BHD
15h 56m
2 stops
American Airlines Logo
11:35 - 21:51
BHD
-
DCA
15h 16m
2 stops
£847American Airlines
Sun, 9 Aug - Mon, 17 Aug

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Aer Lingus flights from District of Columbia to Belfast

Our best Aer Lingus deals on District of Columbia to Belfast flight tickets
Aer Lingus
6 Dec
IAD21:00Washington, D.C. Dulles Intl
15h 20m
2 stops
BHD17:20Belfast City
13 Dec
BHD09:10Belfast City
15h 20m
2 stops
IAD19:30Washington, D.C. Dulles Intl
£861
Aer Lingus
14 Jul
IAD21:10Washington, D.C. Dulles Intl
15h 10m
2 stops
BHD17:20Belfast City
16 Jul
BHD06:50Belfast City
17h 20m
2 stops
IAD19:10Washington, D.C. Dulles Intl
£931
Aer Lingus
14 Jul
IAD21:10Washington, D.C. Dulles Intl
14h 25m
2 stops
BHD16:35Belfast City
16 Jul
BHD17:05Belfast City
27h 40m
2 stops
IAD15:45Washington, D.C. Dulles Intl
£954

British Airways flights from District of Columbia to Belfast

Our best British Airways deals on District of Columbia to Belfast flight tickets
British Airways
25 Nov
IAD18:20Washington, D.C. Dulles Intl
10h 55m
1 stop
BHD10:15Belfast City
30 Nov
BHD11:30Belfast City
13h 25m
1 stop
IAD19:55Washington, D.C. Dulles Intl
£688
British Airways
6 Dec
IAD21:45Washington, D.C. Dulles Intl
14h 05m
1 stop
BHD16:50Belfast City
13 Dec
BHD06:30Belfast City
14h 05m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£690
British Airways
6 Dec
DCA18:30Washington, D.C. Reagan-National
14h 25m
2 stops
BHD13:55Belfast City
13 Dec
BHD06:30Belfast City
17h 24m
2 stops
DCA18:54Washington, D.C. Reagan-National
£701

momondo Fare Finder

 
Customise your flight search to find flights from District of Columbia to Belfast 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 28 June 2026.
Use the filters below to find and compare flights from District of Columbia to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 1/10

20:30-21:40

2 stops20h 10m

Belfast Intl

Thu 8/10

21:10-19:00

2 stops26h 50m

£601

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 26/8

20:30-23:15

3 stops21h 45m

Belfast Intl

Wed 9/9

10:50-15:10

3 stops33h 20m

£603

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 6/12

19:40-20:30

2 stops19h 50m

Belfast Intl

Sun 13/12

20:00-14:45

3 stops47h 45m

£605

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 26/8

16:20-19:15

2 stops21h 55m

Belfast Intl

Wed 9/9

10:50-20:35

3 stops38h 45m

£607

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 25/11

19:40-19:45

2 stops19h 05m

Belfast Intl

Mon 30/11

06:05-14:45

3 stops37h 40m

£618

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 1/10

20:30-19:30

2 stops18h 00m

Belfast Intl

Thu 8/10

20:40-19:00

3 stops27h 20m

£623
Fastest return journey

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 25/11

18:20-10:15

1 stop10h 55m

Belfast City

Mon 30/11

11:30-19:55

1 stop13h 25m

£688

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 6/12

21:45-16:50

1 stop14h 05m

Belfast City

Sun 13/12

06:30-15:35

1 stop14h 05m

£690

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 6/12

18:30-13:55

2 stops14h 25m

Belfast City

Sun 13/12

06:30-18:54

2 stops17h 24m

£701

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 9/8

17:39-14:35

2 stops15h 56m

Belfast City

Mon 17/8

11:35-21:51

2 stops15h 16m

£847

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from District of Columbia to Belfast

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 District of Columbia to Belfast?

Aer Lingus and Delta are the most popular carriers operating from District of Columbia to Belfast

Cheap District of Columbia to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Belfast

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from District of Columbia to Belfast takes 10h 10m
There are no direct flights from District of Columbia to Belfast. There are no popular flight routes from District of Columbia to Belfast.
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Frequently asked questions about flying from District of Columbia to Belfast

  • When did momondo last update prices for flights from District of Columbia to Belfast?

    Prices for flights from District of Columbia to Belfast were last updated today.

  • How old do you have to be to fly from District of Columbia to Belfast?

    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 District of Columbia to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The necessary travel and health documents for your Belfast 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.

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Belfast?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from District of Columbia.

Can I find flights from District of Columbia to Belfast with flexible booking policies on momondo?

Flights from District of Columbia to Belfast 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 District of Columbia to Belfast?

Once you have performed a search for District of Columbia to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from District of Columbia to Belfast right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of District of Columbia to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport