Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Belfast from £297

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. Dulles Intl Airport to Belfast departing on 16/11. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
18:20 - 10:20IAD-BHD
11h 00m1 stop
British Airways Logo
09:05 - 16:35BHD-IAD
11h 30m1 stop
£484British Airways
Find Deal
Thu, 5 Mar - Thu, 12 Mar
British Airways Logo
22:45 - 16:05IAD-BHD
13h 20m1 stop
British Airways Logo
20:25 - 16:35BHD-IAD
24h 10m1 stop
£493British Airways
Find Deal
Mon, 16 Mar - Sun, 22 Mar
Multiple Airlines Logo
18:05 - 16:50IAD-BHD
17h 45m1 stop
Multiple Airlines Logo
17:20 - 16:05BHD-IAD
27h 45m1 stop
£500Multiple Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Delta Logo
12:11 - 16:50IAD-BHD
23h 39m2 stops
Delta Logo
06:30 - 16:05BHD-IAD
14h 35m1 stop
£504Delta
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Multiple Airlines Logo
18:05 - 16:50IAD-BHD
17h 45m1 stop
Multiple Airlines Logo
06:30 - 17:03BHD-IAD
15h 33m2 stops
£508Multiple Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Delta Logo
12:23 - 16:50IAD-BHD
23h 27m2 stops
Delta Logo
06:30 - 17:05BHD-IAD
14h 35m1 stop
£511Delta
Find Deal
Thu, 5 Mar - Thu, 12 Mar
Virgin Atlantic Logo
17:50 - 16:55IAD-BHD
18h 05m1 stop
Virgin Atlantic Logo
17:25 - 15:35BHD-IAD
27h 10m1 stop
£520Virgin Atlantic
Find Deal
Wed, 1 Apr - Sun, 5 Apr
Virgin Atlantic Logo
06:10 - 16:55IAD-BHD
29h 45m2 stops
Virgin Atlantic Logo
17:25 - 15:35BHD-IAD
27h 10m1 stop
£522Virgin Atlantic
Find Deal
Wed, 1 Apr - Sun, 5 Apr
KLM Logo
19:59 - 21:20IAD-BHD
20h 21m2 stops
KLM Logo
06:30 - 15:35BHD-IAD
14h 05m1 stop
£564KLM
Find Deal
Wed, 1 Apr - Sun, 5 Apr
KLM Logo
18:05 - 21:00IAD-BHD
21h 55m1 stop
KLM Logo
17:20 - 16:05BHD-IAD
27h 45m1 stop
£1,301KLM
Find Deal
Sun, 21 Dec - Mon, 29 Dec

British Airways flights from Washington, D.C. Dulles Intl Airport to Belfast

Our best British Airways deals on Washington, D.C. Dulles Intl Airport to Belfast flight tickets
British Airways
5 Mar
IAD18:20Washington, D.C. Dulles Intl
11h 00m
1 stop
BHD10:20Belfast City
12 Mar
BHD09:05Belfast City
11h 30m
1 stop
IAD16:35Washington, D.C. Dulles Intl
£484
Find similar
British Airways
16 Mar
IAD22:45Washington, D.C. Dulles Intl
13h 20m
1 stop
BHD16:05Belfast City
22 Mar
BHD20:25Belfast City
24h 10m
1 stop
IAD16:35Washington, D.C. Dulles Intl
£493
Find similar
British Airways
1 Dec
IAD18:20Washington, D.C. Dulles Intl
11h 20m
1 stop
BHD10:40Belfast City
12 Dec
BHD08:45Belfast City
16h 10m
1 stop
IAD19:55Washington, D.C. Dulles Intl
£570
Find similar

Virgin Atlantic flights from Washington, D.C. Dulles Intl Airport to Belfast

Our best Virgin Atlantic deals on Washington, D.C. Dulles Intl Airport to Belfast flight tickets
Virgin Atlantic
1 Apr
IAD17:50Washington, D.C. Dulles Intl
18h 05m
1 stop
BHD16:55Belfast City
5 Apr
BHD17:25Belfast City
27h 10m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£520
Find similar
Virgin Atlantic
1 Apr
IAD06:10Washington, D.C. Dulles Intl
29h 45m
2 stops
BHD16:55Belfast City
5 Apr
BHD17:25Belfast City
27h 10m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£522
Find similar
Virgin Atlantic
1 Apr
IAD17:50Washington, D.C. Dulles Intl
18h 05m
1 stop
BHD16:55Belfast City
5 Apr
BHD06:30Belfast City
34h 23m
2 stops
IAD11:53Washington, D.C. Dulles Intl
£532
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 279,928 searches. Data last updated 5 November 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

18:20-10:20

1 stop11h 00m

Belfast City

Thu 12/3

09:05-16:35

1 stop11h 30m

£484

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

22:45-16:05

1 stop13h 20m

Belfast City

Sun 22/3

20:25-16:35

1 stop24h 10m

£493

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:05-16:50

1 stop17h 45m

Belfast City

Wed 3/12

17:20-16:05

1 stop27h 45m

£500

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 28/11

12:11-16:50

2 stops23h 39m

Belfast City

Fri 5/12

06:30-16:05

1 stop14h 35m

£504

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:05-16:50

1 stop17h 45m

Belfast City

Wed 3/12

06:30-17:03

2 stops15h 33m

£508

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

12:23-16:50

2 stops23h 27m

Belfast City

Thu 12/3

06:30-17:05

1 stop14h 35m

£511

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 1/4

17:50-16:55

1 stop18h 05m

Belfast City

Sun 5/4

17:25-15:35

1 stop27h 10m

£520

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 1/4

06:10-16:55

2 stops29h 45m

Belfast City

Sun 5/4

17:25-15:35

1 stop27h 10m

£522

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 1/4

19:59-21:20

2 stops20h 21m

Belfast City

Sun 5/4

06:30-15:35

1 stop14h 05m

£564

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 21/12

18:05-21:00

1 stop21h 55m

Belfast City

Mon 29/12

17:20-16:05

1 stop27h 45m

£1,301

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

See travel insights to Belfast from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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. Dulles Intl to Belfast?

American Airlines, Air France, and KLM are the most popular carriers operating from Washington, D.C. Dulles Intl to Belfast

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

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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Belfast. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Belfast.
Search flight deals

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

    Washington, D.C. Dulles Intl and Belfast are 3387.7 mi apart from one another. By plane, this route typically takes 11h 00m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Belfast are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport 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.

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. 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 you have performed a search for Washington, D.C. to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Belfast from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Belfast trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 5/12
Fri 12/12
By creating a price alert you accept our terms of use and privacy policy.

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