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Cheap flights from District of Columbia to Belfast from £403

This is the cheapest return 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 4/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
19:40 - 17:55
IAD
-
BFS
17h 15m
2 stops
Multiple Airlines Logo
06:30 - 19:30
BFS
-
IAD
17h 00m
2 stops
£403Multiple Airlines
Wed, 4 Mar - Thu, 12 Mar
Multiple Airlines Logo
20:40 - 20:20
IAD
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
06:55 - 19:20
BFS
-
IAD
17h 25m
2 stops
£527Multiple Airlines
Sun, 22 Mar - Sun, 29 Mar
Multiple Airlines Logo
20:30 - 21:30
IAD
-
BFS
20h 00m
2 stops
Multiple Airlines Logo
08:55 - 19:20
BFS
-
IAD
15h 25m
2 stops
£532Multiple Airlines
Sun, 3 May - Fri, 8 May
Multiple Airlines Logo
23:30 - 18:55
IAD
-
BFS
15h 25m
2 stops
Multiple Airlines Logo
19:35 - 19:00
BFS
-
IAD
28h 25m
3 stops
£534Multiple Airlines
Sun, 22 Mar - Sun, 29 Mar
Multiple Airlines Logo
20:40 - 21:55
IAD
-
BFS
21h 15m
3 stops
Multiple Airlines Logo
19:35 - 19:00
BFS
-
IAD
28h 25m
3 stops
£595Multiple Airlines
Sun, 22 Mar - Sun, 29 Mar
Multiple Airlines Logo
18:05 - 15:10
IAD
-
BFS
17h 05m
2 stops
Multiple Airlines Logo
21:00 - 20:30
BFS
-
IAD
27h 30m
2 stops
£607Multiple Airlines
Fri, 20 Mar - Fri, 27 Mar
Multiple Airlines Logo
20:30 - 21:00
IAD
-
BFS
19h 30m
2 stops
Multiple Airlines Logo
20:25 - 15:05
BFS
-
IAD
47h 40m
3 stops
£643Multiple Airlines
Sun, 3 May - Fri, 8 May
Multiple Airlines Logo
23:30 - 22:00
IAD
-
BFS
18h 30m
2 stops
Multiple Airlines Logo
08:05 - 16:15
BFS
-
IAD
36h 10m
3 stops
£652Multiple Airlines
Fri, 20 Mar - Fri, 27 Mar
Multiple Airlines Logo
19:00 - 20:30
IAD
-
BFS
21h 30m
2 stops
Multiple Airlines Logo
07:05 - 17:40
BFS
-
IAD
14h 35m
2 stops
£654Multiple Airlines
Fri, 20 Mar - Fri, 27 Mar
Multiple Airlines Logo
20:40 - 13:30
IAD
-
BFS
12h 50m
2 stops
Multiple Airlines Logo
07:00 - 19:30
BFS
-
IAD
16h 30m
2 stops
£655Multiple Airlines
Sat, 21 Mar - Sat, 28 Mar

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 6 February 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

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 4/3

19:40-17:55

2 stops17h 15m

Belfast Intl

Thu 12/3

06:30-19:30

2 stops17h 00m

£403

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 22/3

20:40-20:20

2 stops19h 40m

Belfast Intl

Sun 29/3

06:55-19:20

2 stops17h 25m

£527

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 3/5

20:30-21:30

2 stops20h 00m

Belfast Intl

Fri 8/5

08:55-19:20

2 stops15h 25m

£532

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 22/3

23:30-18:55

2 stops15h 25m

Belfast Intl

Sun 29/3

19:35-19:00

3 stops28h 25m

£534

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 22/3

20:40-21:55

3 stops21h 15m

Belfast Intl

Sun 29/3

19:35-19:00

3 stops28h 25m

£595

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 20/3

18:05-15:10

2 stops17h 05m

Belfast Intl

Fri 27/3

21:00-20:30

2 stops27h 30m

£607

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 3/5

20:30-21:00

2 stops19h 30m

Belfast Intl

Fri 8/5

20:25-15:05

3 stops47h 40m

£643

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 20/3

23:30-22:00

2 stops18h 30m

Belfast Intl

Fri 27/3

08:05-16:15

3 stops36h 10m

£652

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 20/3

19:00-20:30

2 stops21h 30m

Belfast Intl

Fri 27/3

07:05-17:40

2 stops14h 35m

£654

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 21/3

20:40-13:30

2 stops12h 50m

Belfast Intl

Sat 28/3

07:00-19:30

2 stops16h 30m

£655

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

9h 50m

Direct flights

None
The fastest flight from District of Columbia to Belfast Intl Airport takes 9h 50m
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.
Search flight deals

  • 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.

  • 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.

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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.

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