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Cheap flights from District of Columbia to Belfast from $286

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 9/6. 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 District of Columbia to Belfast

Cheap round-trip flights

Logo
10:20 pm - 9:40 pmIAD-BFS
18h 20m3 stops
Logo
6:45 am - 8:50 pmBFS-IAD
43h 05m3 stops
$660
Find Deal
Thu, Oct 2 - Mon, Oct 6
Logo
5:00 pm - 7:25 pmIAD-BFS
21h 25m2 stops
Logo
7:25 am - 3:20 pmBFS-IAD
36h 55m3 stops
$672
Find Deal
Tue, Sep 23 - Tue, Sep 30
Logo
5:00 pm - 10:35 pmIAD-BFS
24h 35m3 stops
Logo
9:40 pm - 3:20 pmBFS-IAD
46h 40m3 stops
$679
Find Deal
Fri, Sep 26 - Fri, Oct 3
Logo
10:20 pm - 9:40 pmIAD-BFS
18h 20m3 stops
Logo
9:00 pm - 8:50 pmBFS-IAD
28h 50m3 stops
$686
Find Deal
Thu, Oct 9 - Mon, Oct 13
Logo
10:20 pm - 10:25 pmIAD-BFS
19h 05m2 stops
Logo
9:00 pm - 8:50 pmBFS-IAD
28h 50m3 stops
$700
Find Deal
Thu, Oct 9 - Mon, Oct 13
Logo
5:50 pm - 10:25 pmIAD-BFS
23h 35m2 stops
Logo
6:45 am - 8:50 pmBFS-IAD
43h 05m3 stops
$705
Find Deal
Thu, Oct 2 - Mon, Oct 6
Logo
2:55 pm - 2:20 pmDCA-BFS
18h 25m2 stops
Logo
8:15 pm - 11:41 pmBFS-DCA
32h 26m2 stops
$729
Find Deal
Mon, Sep 1 - Mon, Sep 15
Logo
10:25 pm - 11:00 pmIAD-BFS
19h 35m1 stop
Logo
7:10 pm - 3:30 pmBFS-IAD
25h 20m1 stop
$730
Find Deal
Mon, Sep 1 - Mon, Sep 15
Logo
10:20 pm - 9:40 pmIAD-BFS
18h 20m3 stops
Logo
7:15 am - 3:20 pmBFS-IAD
37h 05m3 stops
$739
Find Deal
Thu, Sep 11 - Sun, Sep 14
Logo
5:20 pm - 4:40 pmIAD-BFS
18h 20m2 stops
Logo
8:10 am - 6:55 pmBFS-IAD
15h 45m2 stops
$742
Find Deal
Thu, Oct 9 - Mon, Oct 13

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated August 13, 2025.
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

Thu 10/2

10:20 pm-9:40 pm

3 stops18h 20m

Belfast Intl

Mon 10/6

6:45 am-8:50 pm

3 stops43h 05m

$660

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 9/23

5:00 pm-7:25 pm

2 stops21h 25m

Belfast Intl

Tue 9/30

7:25 am-3:20 pm

3 stops36h 55m

$672

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 9/26

5:00 pm-10:35 pm

3 stops24h 35m

Belfast Intl

Fri 10/3

9:40 pm-3:20 pm

3 stops46h 40m

$679

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/9

10:20 pm-9:40 pm

3 stops18h 20m

Belfast Intl

Mon 10/13

9:00 pm-8:50 pm

3 stops28h 50m

$686

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/9

10:20 pm-10:25 pm

2 stops19h 05m

Belfast Intl

Mon 10/13

9:00 pm-8:50 pm

3 stops28h 50m

$700

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/2

5:50 pm-10:25 pm

2 stops23h 35m

Belfast Intl

Mon 10/6

6:45 am-8:50 pm

3 stops43h 05m

$705

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Mon 9/1

2:55 pm-2:20 pm

2 stops18h 25m

Belfast Intl

Mon 9/15

8:15 pm-11:41 pm

2 stops32h 26m

$729

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 9/1

10:25 pm-11:00 pm

1 stop19h 35m

Belfast Intl

Mon 9/15

7:10 pm-3:30 pm

1 stop25h 20m

$730

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 9/11

10:20 pm-9:40 pm

3 stops18h 20m

Belfast Intl

Sun 9/14

7:15 am-3:20 pm

3 stops37h 05m

$739

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 10/9

5:20 pm-4:40 pm

2 stops18h 20m

Belfast Intl

Mon 10/13

8:10 am-6:55 pm

2 stops15h 45m

$742

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 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

What is the cheapest month to fly to Belfast Intl Airport?

The month of February is, on average, the cheapest month to fly to Belfast Intl Airport from District of Columbia, with most prices found around $618. If you’re not able to fly to Belfast Intl Airport in February, then August is your next best option. Flight prices from District of Columbia to Belfast Intl Airport during August average around $618.

What is the cheapest day to depart on your flight to Belfast Intl Airport?

The cheapest day to depart on your flight to Belfast Intl Airport is on a Tuesday when prices can be found for as low as $680. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from District of Columbia to Belfast Intl Airport for around $884.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

In the evening is the cheapest time of day to fly from District of Columbia to Belfast Intl Airport when you can find flight prices for as low as $683. Flying to Belfast Intl Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is in the afternoon when prices are around $762.

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

Best Price Found

$286

Fastest flight time

12h 25m

Direct flights

None
The best one-way flight to Belfast Intl Airport from District of Columbia in the past 72 hours is $286. The best round-trip flight deal from District of Columbia to Belfast Intl Airport found on momondo in the last 72 hours is $660.
The fastest flight from District of Columbia to Belfast Intl Airport takes 12h 25m
There are no direct flights from District of Columbia to Belfast Intl Airport. Popular non-direct routes for this connection are Washington, D.C. Dulles Intl Airport - Belfast Intl Airport and Washington, D.C. Reagan-National Airport - 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 are updated daily.

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

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

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

    The travel and health documents you'll need for your trip to Belfast Intl Airport 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 Intl Airport. 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 Intl Airport

Compare and see reviews for airlines that fly from District of Columbia to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $634Free CancellationRating
6.6
7,265 reviews
Search British Airways flights

Traveling to a place near Belfast?

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

Why use momondo?

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

Finding the right flight to Belfast from District of Columbia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Belfast from District of Columbia with this policy.

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

momondo helps you find the best flight between District of Columbia and Belfast by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for District of Columbia to Belfast flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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