What is the cheapest airline that flies from Washington, D.C. to Belfast?

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

How long does it take to fly to Belfast?

Flight times vary depending on what airport in Washington, D.C. you fly out of and what airport in Belfast you fly into. For example, flying from Baltimore to Belfast Intl Airport takes 10h 25m on average. On the other hand, flying from Washington, D.C. to Belfast Intl Airport takes 13h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

Prices for flights from Washington, D.C. to Belfast refresh daily.

How many operators does momondo search for flights from Washington, D.C. to Belfast?

There is 1 operator available for flights from Washington, D.C. to Belfast as of November 2025.

How old do you have to be to fly from Washington, D.C. 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 Washington, D.C. to Belfast.

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

The necessary travel and health documents for your Belfast trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$287 Cheap Flights from Washington, D.C. to Belfast in 2025/26

Q: What is the typical price of a round-trip flight between Washington, D.C. and Belfast?

Prices are currently low for flights on this route. Typical prices usually range from $667 to $743. The lowest price recently found on this route was $631.

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

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One-way

Cheap round-trip flights

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6:20 pm - 10:20 amIAD-BHD

11h 00m1 stop

9:05 am - 4:35 pmBHD-IAD

11h 30m1 stop

$631British Airways

Find Deal

Thu, Mar 5 - Thu, Mar 12

10:45 pm - 4:05 pmIAD-BHD

13h 20m1 stop

8:25 pm - 4:35 pmBHD-IAD

24h 10m1 stop

$642British Airways

Find Deal

Mon, Mar 16 - Sun, Mar 22

6:05 pm - 4:50 pmIAD-BHD

17h 45m1 stop

6:30 am - 4:05 pmBHD-IAD

14h 35m1 stop

$652Multiple Airlines

Find Deal

Wed, Nov 26 - Wed, Dec 3

6:05 pm - 9:00 pmIAD-BHD

21h 55m1 stop

5:20 pm - 4:05 pmBHD-IAD

27h 45m1 stop

$653Delta

Find Deal

Sun, Nov 23 - Tue, Dec 2

5:23 pm - 10:40 amDCA-BHD

13h 17m2 stops

10:40 am - 10:46 pmBHD-DCA

16h 06m2 stops

$654American Airlines

Find Deal

Mon, Mar 16 - Sun, Mar 22

4:12 pm - 10:40 amDCA-BHD

14h 28m2 stops

12:10 pm - 10:46 pmBHD-DCA

14h 36m2 stops

$655American Airlines

Find Deal

Mon, Mar 16 - Sun, Mar 22

3:35 pm - 4:50 pmIAD-BHD

20h 15m2 stops

5:20 pm - 4:05 pmBHD-IAD

27h 45m1 stop

$657Delta

Find Deal

Mon, Nov 24 - Tue, Dec 2

6:05 pm - 4:50 pmIAD-BHD

17h 45m1 stop

6:30 am - 5:03 pmBHD-IAD

15h 33m2 stops

$662Multiple Airlines

Find Deal

Wed, Nov 26 - Wed, Dec 3

6:05 pm - 9:00 pmIAD-BHD

21h 55m1 stop

6:30 am - 5:03 pmBHD-IAD

15h 33m2 stops

$663KLM

Find Deal

Wed, Nov 26 - Wed, Dec 3

7:59 pm - 9:20 pmIAD-BHD

20h 21m2 stops

6:30 am - 3:35 pmBHD-IAD

14h 05m1 stop

$735KLM

Find Deal

Wed, Apr 1 - Sun, Apr 5

KLM flights from Washington, D.C. to Belfast

Our best KLM deals on Washington, D.C. to Belfast flight tickets

KLM

Nov 26

IAD6:05 pmWashington, D.C. Dulles Intl

21h 55m

1 stop

BHD9:00 pmBelfast City

Dec 3

BHD6:30 amBelfast City

15h 33m

2 stops

IAD5:03 pmWashington, D.C. Dulles Intl

$663

Find similar

KLM

Apr 1

IAD7:59 pmWashington, D.C. Dulles Intl

20h 21m

2 stops

BHD9:20 pmBelfast City

Apr 5

BHD6:30 amBelfast City

14h 05m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$735

Find similar

KLM

Nov 22

IAD6:05 pmWashington, D.C. Dulles Intl

17h 45m

1 stop

BHD4:50 pmBelfast City

Dec 1

BHD5:20 pmBelfast City

27h 45m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$773

Find similar

British Airways flights from Washington, D.C. to Belfast

Our best British Airways deals on Washington, D.C. to Belfast flight tickets

British Airways

Mar 5

IAD6:20 pmWashington, D.C. Dulles Intl

11h 00m

1 stop

BHD10:20 amBelfast City

Mar 12

BHD9:05 amBelfast City

11h 30m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

$631

Find similar

British Airways

Mar 16

IAD10:45 pmWashington, D.C. Dulles Intl

13h 20m

1 stop

BHD4:05 pmBelfast City

Mar 22

BHD8:25 pmBelfast City

24h 10m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

$642

Find similar

British Airways

Dec 1

IAD6:20 pmWashington, D.C. Dulles Intl

11h 20m

1 stop

BHD10:40 amBelfast City

Dec 12

BHD8:45 amBelfast City

16h 10m

1 stop

IAD7:55 pmWashington, D.C. Dulles Intl

$743

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 3/5

6:20 pm-10:20 am

1 stop11h 00m

Belfast City

Thu 3/12

9:05 am-4:35 pm

1 stop11h 30m

$631

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 3/16

10:45 pm-4:05 pm

1 stop13h 20m

Belfast City

Sun 3/22

8:25 pm-4:35 pm

1 stop24h 10m

$642

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/26

6:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Wed 12/3

6:30 am-4:05 pm

1 stop14h 35m

$652

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 11/23

6:05 pm-9:00 pm

1 stop21h 55m

Belfast City

Tue 12/2

5:20 pm-4:05 pm

1 stop27h 45m

$653

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 3/16

5:23 pm-10:40 am

2 stops13h 17m

Belfast City

Sun 3/22

10:40 am-10:46 pm

2 stops16h 06m

$654

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 3/16

4:12 pm-10:40 am

2 stops14h 28m

Belfast City

Sun 3/22

12:10 pm-10:46 pm

2 stops14h 36m

$655

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 11/24

3:35 pm-4:50 pm

2 stops20h 15m

Belfast City

Tue 12/2

5:20 pm-4:05 pm

1 stop27h 45m

$657

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/26

6:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Wed 12/3

6:30 am-5:03 pm

2 stops15h 33m

$662

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/26

6:05 pm-9:00 pm

1 stop21h 55m

Belfast City

Wed 12/3

6:30 am-5:03 pm

2 stops15h 33m

$663

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 4/1

7:59 pm-9:20 pm

2 stops20h 21m

Belfast City

Sun 4/5

6:30 am-3:35 pm

1 stop14h 05m

$735

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. 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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Washington, D.C. and Belfast?

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

The cheapest day to depart from Washington, D.C. to Belfast is on a Tuesday when prices can be found for as low as $680. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Belfast for around $884.

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

Our data shows that the cheapest Washington, D.C. to Belfast flights are usually those with departure times in the evening. Our users have found flights to Belfast in the evening for as low as $683. Try not to purchase tickets in the afternoon because they tend to be around $762. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

Direct flights	None

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

Search flight deals

How far is Washington, D.C. to Belfast by plane?
Washington, D.C. and Belfast are 3373.5 mi apart from one another. In terms of flight time, this usually takes a little over 10h 25m.
When did momondo last update prices for flights from Washington, D.C. to Belfast?
Prices for flights from Washington, D.C. to Belfast refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Belfast?
There is 1 operator available for flights from Washington, D.C. to Belfast as of November 2025.
How old do you have to be to fly from Washington, D.C. 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 Washington, D.C. to Belfast.
What documentation or ID do you need to fly to Belfast?
The necessary travel and health documents for your Belfast trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Washington, D.C. to Belfast

Compare and see reviews for airlines that fly from Washington, D.C. to Belfast with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $620	Free Cancellation	Rating 6.7 7,496 reviews		Search British Airways flights

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. All flights to Belfast from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Belfast from Washington, D.C..

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

Of course. momondo tracks the price of Washington, D.C. to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Belfast trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Washington, D.C. to Belfast from $287

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. to Belfast departing on 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

KLM flights from Washington, D.C. to Belfast

Our best KLM deals on Washington, D.C. to Belfast flight tickets

British Airways flights from Washington, D.C. to Belfast

Our best British Airways deals on Washington, D.C. to Belfast flight tickets

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See travel insights to Belfast from

How to get the cheapest flight ticket from Washington, D.C. 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 typical price of a round-trip flight between Washington, D.C. and Belfast?

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

The cheapest day to depart from Washington, D.C. to Belfast is on a Tuesday when prices can be found for as low as $680. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Belfast for around $884.

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

What is the cheapest airline that flies from Washington, D.C. to Belfast?

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

How long does it take to fly to Belfast?

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

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

Direct flights

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

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

How many operators does momondo search for flights from Washington, D.C. to Belfast?

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

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

Best airlines flying from Washington, D.C. to Belfast

Compare and see reviews for airlines that fly from Washington, D.C. to Belfast with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Belfast trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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