How do I get Price Alerts for flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport?

Search flight deals from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport . While viewing offers you’ll have the option to create a Price Alert.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£314 Cheap Flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport in 2026/27

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

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

10:15 - 17:00BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

35h 45m2 stops London Gatwick Zurich

09:55 - 21:15IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

30h 20m3 stops Montreal Pierre Elliott Trudeau Intl Zurich London Gatwick

£487Multiple Airlines

Mon, 9 Nov - Mon, 16 Nov

20:55 - 18:00BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

25h 05m2 stops London Gatwick Zurich

20:10 - 21:25IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

20h 15m2 stops Zurich London Gatwick

£542Multiple Airlines

Sun, 25 Oct - Sun, 1 Nov

06:30 - 19:30BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

17h 00m2 stops London Gatwick Reykjavik Keflavik Intl

19:40 - 21:25IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

20h 45m2 stops Reykjavik Keflavik Intl London Gatwick

£556Multiple Airlines

Fri, 30 Oct - Sun, 1 Nov

06:10 - 19:35BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

18h 25m2 stops London Gatwick Paris Charles de Gaulle

22:30 - 20:10IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

17h 40m2 stops Paris Charles de Gaulle London Gatwick

£592Multiple Airlines

Thu, 22 Oct - Mon, 26 Oct

14:50 - 19:20BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

33h 30m2 stops London Stansted Reykjavik Keflavik Intl

19:40 - 11:30IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

11h 50m1 stop Paris Charles de Gaulle

£889Multiple Airlines

Thu, 22 Oct - Mon, 26 Oct

14:35 - 14:30BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

28h 55m1 stop Rome Fiumicino

19:40 - 10:20IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

33h 40m2 stops Reykjavik Keflavik Intl Glasgow Intl

£893Multiple Airlines

Mon, 9 Nov - Mon, 16 Nov

10:40 - 19:30BFS Belfast Intl-IAD Washington, D.C. Dulles Intl

36h 50m2 stops Newcastle upon Tyne Reykjavik Keflavik Intl

21:30 - 20:10IAD Washington, D.C. Dulles Intl-BFS Belfast Intl

17h 40m1 stop Paris Charles de Gaulle

£1,102Multiple Airlines

Sun, 25 Oct - Sun, 1 Nov

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Use the filters below to find and compare flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Mon 9/11

10:15-17:00

2 stops35h 45m

Washington, D.C. Dulles Intl

Mon 16/11

09:55-21:15

3 stops30h 20m

£487

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Sun 25/10

20:55-18:00

2 stops25h 05m

Washington, D.C. Dulles Intl

Sun 1/11

20:10-21:25

2 stops20h 15m

£542

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Fri 30/10

06:30-19:30

2 stops17h 00m

Washington, D.C. Dulles Intl

Sun 1/11

19:40-21:25

2 stops20h 45m

£556

Fastest return journey

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Thu 22/10

06:10-19:35

2 stops18h 25m

Washington, D.C. Dulles Intl

Mon 26/10

22:30-20:10

2 stops17h 40m

£592

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Thu 22/10

14:50-19:20

2 stops33h 30m

Washington, D.C. Dulles Intl

Mon 26/10

19:40-11:30

1 stop11h 50m

£889

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Mon 9/11

14:35-14:30

1 stop28h 55m

Washington, D.C. Dulles Intl

Mon 16/11

19:40-10:20

2 stops33h 40m

£893

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Sun 25/10

10:40-19:30

2 stops36h 50m

Washington, D.C. Dulles Intl

Sun 1/11

21:30-20:10

1 stop17h 40m

£1,102

Cheapest one-way

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Wed 18/11

18:00-19:20

2 stops30h 20m

£314

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Wed 18/11

07:55-15:15

3 stops36h 20m

£315

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Tue 17/11

18:25-15:15

3 stops49h 50m

£316

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

When to book flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Belfast Intl Airport to Washington, D.C. Dulles Intl Airport (BFS to IAD) flight deals and tips

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

Best price found	£314
Fastest flight time	16h 10m
Direct flights	None

The best one-way flight to Washington, D.C. Dulles Intl Airport from Belfast Intl Airport in the past 72 hours is £314. The best return flight deal from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £487.

The fastest flight from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport takes 16h 10m

There are no direct flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport.

Search flight deals

Frequently asked questions about flying from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport

How far is Belfast Intl to Washington, D.C. Dulles Intl by plane?
The straight-line distance from Belfast Intl to Washington, D.C. Dulles Intl is 3375.6 mi. A reasonable flight in good conditions will take 16h 10m.
When did momondo last update prices for flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport refresh daily.
How old do you have to be to fly from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport

How do I get Price Alerts for flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport?
Search flight deals from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Belfast Intl Airport to Washington, D.C. Dulles Intl Airport with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Belfast to Washington, D.C. flights to just show those with flexible booking policies.

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

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 Washington, D.C. from Belfast.

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

Yes. momondo can track prices for Belfast to Washington, D.C. 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.