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Cheap flights from Washington, D.C. to Belfast from $547

This is the cheapest round-trip 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 3/4. 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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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
7:40 pm - 5:55 pm
IAD
-
BFS
17h 15m
2 stops
Multiple Airlines Logo
6:30 am - 7:30 pm
BFS
-
IAD
17h 00m
2 stops
$547Multiple Airlines
Wed, Mar 4 - Thu, Mar 12
Multiple Airlines Logo
7:40 pm - 7:00 pm
IAD
-
BHD
18h 20m
2 stops
Multiple Airlines Logo
7:25 am - 7:30 pm
BHD
-
IAD
16h 05m
2 stops
$561Multiple Airlines
Wed, Mar 4 - Thu, Mar 12
British Airways Logo
6:20 pm - 9:10 am
IAD
-
BHD
9h 50m
1 stop
British Airways Logo
6:35 am - 4:35 pm
BHD
-
IAD
14h 00m
1 stop
$647British Airways
Wed, Mar 4 - Thu, Mar 12
American Airlines Logo
6:04 pm - 1:55 pm
BWI
-
BHD
14h 51m
2 stops
American Airlines Logo
2:40 pm - 7:45 pm
BHD
-
BWI
33h 05m
1 stop
$647American Airlines
Sun, Feb 22 - Mon, Mar 9
British Airways Logo
6:20 pm - 9:10 am
IAD
-
BHD
9h 50m
1 stop
British Airways Logo
6:30 am - 3:35 pm
BHD
-
IAD
14h 05m
1 stop
$651British Airways
Wed, Mar 4 - Sun, Mar 8
KLM Logo
6:05 pm - 4:50 pm
IAD
-
BHD
17h 45m
1 stop
KLM Logo
6:30 am - 5:05 pm
BHD
-
IAD
14h 35m
1 stop
$654KLM
Sun, Feb 22 - Mon, Mar 9
KLM Logo
3:39 pm - 4:50 pm
BWI
-
BHD
20h 11m
2 stops
KLM Logo
6:30 am - 7:19 pm
BHD
-
BWI
16h 49m
2 stops
$674KLM
Wed, Mar 4 - Thu, Mar 12
Delta Logo
6:00 am - 9:00 pm
BWI
-
BHD
34h 00m
2 stops
Delta Logo
5:20 pm - 11:01 pm
BHD
-
BWI
33h 41m
2 stops
$676Delta
Sun, Feb 22 - Mon, Mar 9
Delta Logo
3:39 pm - 4:50 pm
BWI
-
BHD
20h 11m
2 stops
Delta Logo
6:30 am - 7:19 pm
BHD
-
BWI
16h 49m
2 stops
$688Delta
Wed, Mar 4 - Thu, Mar 12
American Airlines Logo
12:38 pm - 10:15 am
BWI
-
BHD
16h 37m
2 stops
American Airlines Logo
9:05 am - 7:45 pm
BHD
-
BWI
14h 40m
1 stop
$803American Airlines
Wed, Mar 4 - Thu, Mar 12

American Airlines flights from Washington, D.C. to Belfast

Our best American Airlines deals on Washington, D.C. to Belfast flight tickets
American Airlines
Feb 22
BWI6:04 pmBaltimore/Washington
14h 51m
2 stops
BHD1:55 pmBelfast City
Mar 9
BHD2:40 pmBelfast City
33h 05m
1 stop
BWI7:45 pmBaltimore/Washington
$647
American Airlines
Apr 2
IAD7:15 pmWashington, D.C. Dulles Intl
19h 10m
1 stop
BHD7:25 pmBelfast City
Apr 7
BHD6:30 amBelfast City
17h 11m
2 stops
IAD6:41 pmWashington, D.C. Dulles Intl
$766
American Airlines
Mar 4
BWI12:38 pmBaltimore/Washington
16h 37m
2 stops
BHD10:15 amBelfast City
Mar 12
BHD9:05 amBelfast City
14h 40m
1 stop
BWI7:45 pmBaltimore/Washington
$803

KLM flights from Washington, D.C. to Belfast

Our best KLM deals on Washington, D.C. to Belfast flight tickets
KLM
Feb 22
IAD6:05 pmWashington, D.C. Dulles Intl
17h 45m
1 stop
BHD4:50 pmBelfast City
Mar 9
BHD6:30 amBelfast City
14h 35m
1 stop
IAD5:05 pmWashington, D.C. Dulles Intl
$654
KLM
Mar 4
BWI3:39 pmBaltimore/Washington
20h 11m
2 stops
BHD4:50 pmBelfast City
Mar 12
BHD6:30 amBelfast City
16h 49m
2 stops
BWI7:19 pmBaltimore/Washington
$674
KLM
Feb 8
BWI5:30 pmBaltimore/Washington
18h 20m
2 stops
BHD4:50 pmBelfast City
Feb 10
BHD5:20 pmBelfast City
28h 18m
2 stops
BWI4:38 pmBaltimore/Washington
$1,391

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 832,500 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Belfast 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 3/4

7:40 pm-5:55 pm

2 stops17h 15m

Belfast Intl

Thu 3/12

6:30 am-7:30 pm

2 stops17h 00m

$547

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

7:40 pm-7:00 pm

2 stops18h 20m

Belfast City

Thu 3/12

7:25 am-7:30 pm

2 stops16h 05m

$561

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

6:20 pm-9:10 am

1 stop9h 50m

Belfast City

Thu 3/12

6:35 am-4:35 pm

1 stop14h 00m

$647

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 2/22

6:04 pm-1:55 pm

2 stops14h 51m

Belfast City

Mon 3/9

2:40 pm-7:45 pm

1 stop33h 05m

$647

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

6:20 pm-9:10 am

1 stop9h 50m

Belfast City

Sun 3/8

6:30 am-3:35 pm

1 stop14h 05m

$651

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 2/22

6:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Mon 3/9

6:30 am-5:05 pm

1 stop14h 35m

$654

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 3/4

3:39 pm-4:50 pm

2 stops20h 11m

Belfast City

Thu 3/12

6:30 am-7:19 pm

2 stops16h 49m

$674

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 2/22

6:00 am-9:00 pm

2 stops34h 00m

Belfast City

Mon 3/9

5:20 pm-11:01 pm

2 stops33h 41m

$676

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 3/4

3:39 pm-4:50 pm

2 stops20h 11m

Belfast City

Thu 3/12

6:30 am-7:19 pm

2 stops16h 49m

$688

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 3/4

12:38 pm-10:15 am

2 stops16h 37m

Belfast City

Thu 3/12

9:05 am-7:45 pm

1 stop14h 40m

$803

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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

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 Washington, D.C. to Belfast?

British Airways is the most popular carrier operating from Washington, D.C. to Belfast

Cheap Washington, D.C. to Belfast flight deals and tips

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

Fastest flight time

9h 50m

Direct flights

None
The fastest flight from Washington, D.C. to Belfast takes 9h 50m
There are no direct flights from Washington, D.C. to Belfast. There are no popular flight routes from Washington, D.C. to Belfast.
Search flight deals

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

    Washington, D.C. and Belfast are 3373.5 mi apart from one another. In terms of flight time, this usually takes a little over 9h 50m.

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

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

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

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

    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.

  • 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.

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

Compare and see reviews for airlines that fly from Washington, D.C. to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $627Free CancellationRating
6.7
7,715 reviews
Search British Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Belfast for you.

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

Yes. All flights to Belfast from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Belfast right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. 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