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Cheap flights from District of Columbia to Belfast from $320

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 9/12. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from District of Columbia 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
2 stops
Multiple Airlines Logo
8:15 pm - 7:00 pm
BFS
-
IAD
27h 45m
3 stops
$787Multiple Airlines
Fri, Oct 2 - Tue, Oct 13
Multiple Airlines Logo
8:30 pm - 9:40 pm
IAD
-
BFS
20h 10m
2 stops
Multiple Airlines Logo
9:10 pm - 7:00 pm
BFS
-
IAD
26h 50m
2 stops
$793Multiple Airlines
Thu, Oct 1 - Thu, Oct 8
Multiple Airlines Logo
7:40 pm - 8:30 pm
IAD
-
BFS
19h 50m
2 stops
Multiple Airlines Logo
8:00 pm - 2:45 pm
BFS
-
IAD
47h 45m
3 stops
$799Multiple Airlines
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
8:30 pm - 6:55 pm
IAD
-
BFS
17h 25m
2 stops
Multiple Airlines Logo
7:10 am - 3:10 pm
BFS
-
IAD
37h 00m
3 stops
$806Multiple Airlines
Sat, Aug 22 - Sun, Aug 30
Multiple Airlines Logo
8:30 pm - 7:30 pm
IAD
-
BFS
18h 00m
2 stops
Multiple Airlines Logo
8:40 pm - 7:00 pm
BFS
-
IAD
27h 20m
3 stops
$823Multiple Airlines
Thu, Oct 1 - Thu, Oct 8
British Airways Logo
9:45 pm - 4:50 pm
IAD
-
BHD
14h 05m
1 stop
British Airways Logo
6:30 am - 3:35 pm
BHD
-
IAD
14h 05m
1 stop
$911British Airways
Sun, Dec 6 - Sun, Dec 13
British Airways Logo
10:45 pm - 1:55 pm
IAD
-
BHD
11h 10m
1 stop
British Airways Logo
6:30 am - 3:35 pm
BHD
-
IAD
14h 05m
1 stop
$912British Airways
Sun, Oct 25 - Sun, Nov 15
American Airlines Logo
5:30 pm - 10:20 am
DCA
-
BHD
12h 50m
2 stops
American Airlines Logo
9:10 am - 6:51 pm
BHD
-
DCA
14h 41m
2 stops
$1,037American Airlines
Sun, Oct 25 - Sun, Nov 15
KLM Logo
1:50 pm - 9:20 am
DCA
-
BHD
14h 30m
2 stops
KLM Logo
9:50 am - 8:33 pm
BHD
-
DCA
15h 43m
2 stops
$1,104KLM
Sat, Aug 22 - Sun, Aug 30
American Airlines Logo
5:39 pm - 2:35 pm
DCA
-
BHD
15h 56m
2 stops
American Airlines Logo
11:35 am - 9:51 pm
BHD
-
DCA
15h 16m
2 stops
$1,119American Airlines
Sun, Aug 9 - Mon, Aug 17

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KLM flights from District of Columbia to Belfast

Our best KLM deals on District of Columbia to Belfast flight tickets
KLM
Aug 22
IAD5:40 pmWashington, D.C. Dulles Intl
10h 40m
1 stop
BHD9:20 amBelfast City
Aug 30
BHD5:30 pmBelfast City
27h 05m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,090
KLM
Aug 9
IAD12:29 pmWashington, D.C. Dulles Intl
15h 51m
2 stops
BHD9:20 amBelfast City
Aug 17
BHD5:30 pmBelfast City
27h 05m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,097
KLM
Aug 22
DCA1:50 pmWashington, D.C. Reagan-National
14h 30m
2 stops
BHD9:20 amBelfast City
Aug 30
BHD9:50 amBelfast City
15h 43m
2 stops
DCA8:33 pmWashington, D.C. Reagan-National
$1,104

Virgin Atlantic flights from District of Columbia to Belfast

Our best Virgin Atlantic deals on District of Columbia to Belfast flight tickets
Virgin Atlantic
Aug 22
IAD6:00 amWashington, D.C. Dulles Intl
22h 20m
2 stops
BHD9:20 amBelfast City
Aug 30
BHD9:50 amBelfast City
19h 44m
2 stops
IAD12:34 amWashington, D.C. Dulles Intl
$1,122
Virgin Atlantic
Jul 14
IAD5:40 pmWashington, D.C. Dulles Intl
10h 40m
1 stop
BHD9:20 amBelfast City
Aug 16
BHD5:30 pmBelfast City
27h 05m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,177
Virgin Atlantic
Jun 27
IAD5:40 pmWashington, D.C. Dulles Intl
10h 40m
1 stop
BHD9:20 amBelfast City
Jul 5
BHD9:50 amBelfast City
10h 45m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,547

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated June 26, 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 round-trip

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 10/2

8:30 pm-11:20 pm

2 stops21h 50m

Belfast Intl

Tue 10/13

8:15 pm-7:00 pm

3 stops27h 45m

$787

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/1

8:30 pm-9:40 pm

2 stops20h 10m

Belfast Intl

Thu 10/8

9:10 pm-7:00 pm

2 stops26h 50m

$793

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 12/6

7:40 pm-8:30 pm

2 stops19h 50m

Belfast Intl

Sun 12/13

8:00 pm-2:45 pm

3 stops47h 45m

$799

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 8/22

8:30 pm-6:55 pm

2 stops17h 25m

Belfast Intl

Sun 8/30

7:10 am-3:10 pm

3 stops37h 00m

$806

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/1

8:30 pm-7:30 pm

2 stops18h 00m

Belfast Intl

Thu 10/8

8:40 pm-7:00 pm

3 stops27h 20m

$823

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 12/6

9:45 pm-4:50 pm

1 stop14h 05m

Belfast City

Sun 12/13

6:30 am-3:35 pm

1 stop14h 05m

$911
Quickest round-trip

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 10/25

10:45 pm-1:55 pm

1 stop11h 10m

Belfast City

Sun 11/15

6:30 am-3:35 pm

1 stop14h 05m

$912

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 10/25

5:30 pm-10:20 am

2 stops12h 50m

Belfast City

Sun 11/15

9:10 am-6:51 pm

2 stops14h 41m

$1,037

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sat 8/22

1:50 pm-9:20 am

2 stops14h 30m

Belfast City

Sun 8/30

9:50 am-8:33 pm

2 stops15h 43m

$1,104

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 8/9

5:39 pm-2:35 pm

2 stops15h 56m

Belfast City

Mon 8/17

11:35 am-9:51 pm

2 stops15h 16m

$1,119

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 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, Delta, and British Airways 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 40m

Direct flights

None
The fastest flight from District of Columbia to Belfast takes 10h 40m
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 are updated daily.

  • How many operators does momondo search for flights from District of Columbia to Belfast?

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

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

    The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from District of Columbia to Belfast

Compare and see reviews for airlines that fly from District of Columbia to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $652Free CancellationRating
6.7
8,071 reviews
Search British Airways flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from District of Columbia to Belfast. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Belfast from District of Columbia on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Belfast from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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