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Cheap flights from District of Columbia to Belfast from $423

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 12/25. 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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0 bags

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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
7:40 pm - 7:20 pmIAD-BFS
18h 40m2 stops
Multiple Airlines Logo
7:20 am - 6:30 pmBFS-IAD
16h 10m2 stops
$674Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Multiple Airlines Logo
5:30 pm - 3:25 pmIAD-BFS
16h 55m2 stops
Multiple Airlines Logo
10:25 pm - 9:00 pmBFS-IAD
27h 35m3 stops
$708Multiple Airlines
Find Deal
Sat, Nov 15 - Sat, Nov 22
Multiple Airlines Logo
9:40 am - 1:35 pmDCA-BFS
22h 55m3 stops
Multiple Airlines Logo
6:00 am - 9:56 pmBFS-DCA
20h 56m3 stops
$722Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Multiple Airlines Logo
7:40 pm - 10:40 pmIAD-BFS
22h 00m2 stops
Multiple Airlines Logo
6:00 am - 6:30 pmBFS-IAD
17h 30m2 stops
$732Multiple Airlines
Find Deal
Sat, Nov 15 - Sat, Nov 22
Multiple Airlines Logo
8:45 pm - 11:55 pmIAD-BFS
22h 10m2 stops
Multiple Airlines Logo
8:10 am - 3:15 pmBFS-IAD
36h 05m3 stops
$754Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Multiple Airlines Logo
6:59 am - 5:00 pmDCA-BFS
29h 01m3 stops
Multiple Airlines Logo
7:30 am - 8:55 amBFS-DCA
30h 25m3 stops
$766Multiple Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
7:40 pm - 10:20 pmIAD-BFS
21h 40m2 stops
Multiple Airlines Logo
6:30 am - 6:30 pmBFS-IAD
17h 00m2 stops
$821Multiple Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
5:30 pm - 9:05 pmIAD-BFS
22h 35m3 stops
Multiple Airlines Logo
8:15 am - 9:00 pmBFS-IAD
41h 45m3 stops
$907Multiple Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
5:30 pm - 11:45 pmIAD-BFS
25h 15m3 stops
Multiple Airlines Logo
9:05 pm - 3:35 pmBFS-IAD
23h 30m2 stops
$928Multiple Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
5:45 pm - 10:55 pmIAD-BFS
24h 10m3 stops
Multiple Airlines Logo
8:45 pm - 5:00 amBFS-IAD
36h 15m3 stops
$989Multiple Airlines
Find Deal
Mon, Oct 20 - Sun, Oct 26

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 October 6, 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

Wed 11/19

7:40 pm-7:20 pm

2 stops18h 40m

Belfast Intl

Wed 11/26

7:20 am-6:30 pm

2 stops16h 10m

$674

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 11/15

5:30 pm-3:25 pm

2 stops16h 55m

Belfast Intl

Sat 11/22

10:25 pm-9:00 pm

3 stops27h 35m

$708

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Wed 11/19

9:40 am-1:35 pm

3 stops22h 55m

Belfast Intl

Wed 11/26

6:00 am-9:56 pm

3 stops20h 56m

$722

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 11/15

7:40 pm-10:40 pm

2 stops22h 00m

Belfast Intl

Sat 11/22

6:00 am-6:30 pm

2 stops17h 30m

$732

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 11/19

8:45 pm-11:55 pm

2 stops22h 10m

Belfast Intl

Wed 11/26

8:10 am-3:15 pm

3 stops36h 05m

$754

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Thu 11/20

6:59 am-5:00 pm

3 stops29h 01m

Belfast Intl

Thu 11/27

7:30 am-8:55 am

3 stops30h 25m

$766

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 11/20

7:40 pm-10:20 pm

2 stops21h 40m

Belfast Intl

Thu 11/27

6:30 am-6:30 pm

2 stops17h 00m

$821

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 11/20

5:30 pm-9:05 pm

3 stops22h 35m

Belfast Intl

Thu 11/27

8:15 am-9:00 pm

3 stops41h 45m

$907

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 11/20

5:30 pm-11:45 pm

3 stops25h 15m

Belfast Intl

Thu 11/27

9:05 pm-3:35 pm

2 stops23h 30m

$928

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 10/20

5:45 pm-10:55 pm

3 stops24h 10m

Belfast Intl

Sun 10/26

8:45 pm-5:00 am

3 stops36h 15m

$989

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 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 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

Direct flights

None
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 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
6.7
7,430 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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