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Cheap flights from Washington, D.C. to Belfast from $246

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Belfast departing on 4/15. 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 Washington, D.C. to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:30 pm - 11:20 pm
IAD
-
BFS
21h 50m
3 stops
Multiple Airlines Logo
11:30 pm - 3:10 pm
BFS
-
IAD
44h 40m
3 stops
$646Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
8:30 pm - 8:35 pm
IAD
-
BFS
19h 05m
2 stops
Multiple Airlines Logo
6:10 am - 7:20 pm
BFS
-
IAD
42h 10m
2 stops
$661Multiple Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
8:30 pm - 8:55 pm
IAD
-
BFS
19h 25m
2 stops
Multiple Airlines Logo
6:15 am - 7:20 pm
BFS
-
IAD
42h 05m
2 stops
$664Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
8:30 pm - 11:20 pm
IAD
-
BFS
21h 50m
3 stops
Multiple Airlines Logo
8:55 am - 3:10 pm
BFS
-
IAD
35h 15m
3 stops
$678Multiple Airlines
Mon, Apr 13 - Mon, Apr 27
Multiple Airlines Logo
8:30 pm - 3:15 pm
IAD
-
BFS
13h 45m
2 stops
Multiple Airlines Logo
7:35 am - 7:20 pm
BFS
-
IAD
16h 45m
2 stops
$688Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
8:30 pm - 10:50 pm
IAD
-
BFS
21h 20m
3 stops
Multiple Airlines Logo
2:50 pm - 8:35 pm
BFS
-
IAD
34h 45m
3 stops
$696Multiple Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
8:30 pm - 10:35 pm
IAD
-
BFS
21h 05m
3 stops
Multiple Airlines Logo
9:35 am - 8:35 pm
BFS
-
IAD
40h 00m
3 stops
$704Multiple Airlines
Sun, Apr 12 - Sun, Apr 19
Multiple Airlines Logo
8:30 pm - 9:00 pm
IAD
-
BFS
19h 30m
2 stops
Multiple Airlines Logo
9:35 am - 8:35 pm
BFS
-
IAD
40h 00m
3 stops
$720Multiple Airlines
Sun, Apr 12 - Sun, Apr 19
Multiple Airlines Logo
8:30 pm - 3:15 pm
BWI
-
BFS
13h 45m
2 stops
Multiple Airlines Logo
7:35 am - 7:25 pm
BFS
-
BWI
16h 50m
2 stops
$723Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
8:30 pm - 11:20 pm
IAD
-
BFS
21h 50m
3 stops
Multiple Airlines Logo
9:10 am - 8:35 pm
BFS
-
IAD
16h 25m
2 stops
$724Multiple Airlines
Mon, Apr 13 - Mon, Apr 27

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 832,500 searches. Data last updated March 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. 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

Tue 4/14

8:30 pm-11:20 pm

3 stops21h 50m

Belfast Intl

Tue 4/21

11:30 pm-3:10 pm

3 stops44h 40m

$646

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 4/16

8:30 pm-8:35 pm

2 stops19h 05m

Belfast Intl

Thu 4/23

6:10 am-7:20 pm

2 stops42h 10m

$661

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 4/14

8:30 pm-8:55 pm

2 stops19h 25m

Belfast Intl

Tue 4/21

6:15 am-7:20 pm

2 stops42h 05m

$664

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 4/13

8:30 pm-11:20 pm

3 stops21h 50m

Belfast Intl

Mon 4/27

8:55 am-3:10 pm

3 stops35h 15m

$678

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 4/14

8:30 pm-3:15 pm

2 stops13h 45m

Belfast Intl

Tue 4/21

7:35 am-7:20 pm

2 stops16h 45m

$688

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 4/16

8:30 pm-10:50 pm

3 stops21h 20m

Belfast Intl

Thu 4/23

2:50 pm-8:35 pm

3 stops34h 45m

$696

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 4/12

8:30 pm-10:35 pm

3 stops21h 05m

Belfast Intl

Sun 4/19

9:35 am-8:35 pm

3 stops40h 00m

$704

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 4/12

8:30 pm-9:00 pm

2 stops19h 30m

Belfast Intl

Sun 4/19

9:35 am-8:35 pm

3 stops40h 00m

$720

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Tue 4/14

8:30 pm-3:15 pm

2 stops13h 45m

Belfast Intl

Tue 4/21

7:35 am-7:25 pm

2 stops16h 50m

$723

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 4/13

8:30 pm-11:20 pm

3 stops21h 50m

Belfast Intl

Mon 4/27

9:10 am-8:35 pm

2 stops16h 25m

$724

Flights are sorted by cheapest round-trip 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 Washington, D.C. to Belfast 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

How long does it take to fly to Belfast Intl Airport?

On average, it takes 11h 17m to fly from Washington, D.C. to Belfast Intl Airport if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Belfast Intl Airport (the most popular airport in Belfast Intl Airport). If you’re flying out of Baltimore and into Belfast Intl Airport, then the flight time is around 12h.

When to book flights from Washington, D.C. to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Belfast Intl Airport (WAS to BFS) flight deals and tips

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

Fastest flight time

10h 30m

Direct flights

None
The fastest flight from Washington, D.C. to Belfast Intl Airport takes 10h 30m
There are no direct flights from Washington, D.C. to Belfast Intl Airport. There are no popular flight routes from Washington, D.C. to Belfast Intl Airport.
Search flight deals

  • How far is Washington, D.C. to Belfast Intl by plane?

    A flight from Washington, D.C. to Belfast Intl will travel around 3361.5 mi. Typically, this will take 10h 30m by plane in normal conditions.

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

    Prices for flights from Washington, D.C. to Belfast Intl Airport refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. to Belfast Intl Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. 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.

  • What is the most popular airline from Washington, D.C. to Belfast Intl Airport?

Best airlines flying from Washington, D.C. to Belfast Intl Airport

Compare and see reviews for airlines that fly from Washington, D.C. to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $627Free CancellationRating
6.7
7,774 reviews
Search British Airways flights

Traveling to a place near Belfast?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Belfast. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Belfast from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Belfast?

Once all potential Washington, D.C. 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 Washington, D.C. to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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