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
Multiple Airlines Logo
19:40 - 18:55
IAD
-
BFS
18h 15m
3 stops
Multiple Airlines Logo
08:20 - 19:05
BFS
-
IAD
39h 45m
3 stops
£630Multiple Airlines
Thu, 5 Nov - Tue, 10 Nov
Multiple Airlines Logo
20:30 - 23:05
IAD
-
BFS
21h 35m
3 stops
Multiple Airlines Logo
22:45 - 20:24
BFS
-
IAD
26h 39m
2 stops
£631Multiple Airlines
Tue, 14 Jul - Wed, 22 Jul
Multiple Airlines Logo
19:40 - 20:45
IAD
-
BFS
20h 05m
3 stops
Multiple Airlines Logo
06:05 - 14:45
BFS
-
IAD
37h 40m
3 stops
£637Multiple Airlines
Wed, 25 Nov - Mon, 30 Nov
Multiple Airlines Logo
19:40 - 18:55
IAD
-
BFS
18h 15m
2 stops
Multiple Airlines Logo
08:20 - 19:05
BFS
-
IAD
39h 45m
3 stops
£639Multiple Airlines
Thu, 5 Nov - Tue, 10 Nov

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momondo Fare Finder

 
Customise your flight search to find flights from District of Columbia to Belfast 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 28 June 2026.
Use the filters below to find and compare flights from District of Columbia to Belfast Intl Airport 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
Fastest return journey

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

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 5/11

19:40-18:55

3 stops18h 15m

Belfast Intl

Tue 10/11

08:20-19:05

3 stops39h 45m

£630

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 14/7

20:30-23:05

3 stops21h 35m

Belfast Intl

Wed 22/7

22:45-20:24

2 stops26h 39m

£631

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 25/11

19:40-20:45

3 stops20h 05m

Belfast Intl

Mon 30/11

06:05-14:45

3 stops37h 40m

£637

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 5/11

19:40-18:55

2 stops18h 15m

Belfast Intl

Tue 10/11

08:20-19:05

3 stops39h 45m

£639

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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Cheap District of Columbia to Belfast Intl Airport flight deals and tips

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

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from District of Columbia to Belfast Intl Airport takes 10h 10m
There are no direct flights from District of Columbia to Belfast Intl Airport. There are no popular flight routes from District of Columbia to Belfast Intl Airport.

Frequently asked questions about flying from District of Columbia to Belfast Intl Airport

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

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

  • How old do you have to be to fly from District of Columbia to Belfast 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 District of Columbia to Belfast Intl Airport.

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

    The necessary travel and health documents for your Belfast Intl Airport 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.

Frequently asked questions about flying from District of Columbia to Belfast Intl Airport

  • How do I get Price Alerts for flights from District of Columbia to Belfast Intl Airport?

    Confirm your travel details to search for the latest offers for flights from District of Columbia to Belfast Intl Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from District of Columbia to Belfast Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Ballymena
Newry
Armagh
Cookstown
Portadown
Dungannon

Why use momondo?

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

It is quick and easy to find District of Columbia to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

All flight searches from District of Columbia to Belfast on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from District of Columbia to Belfast?

Once all potential District of Columbia to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from District of Columbia to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.

An easier way to manage your Belfast Intl Airport trip

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1 adult
Tue 28/7
Tue 4/8

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