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 Washington, D.C. to Belfast Intl Airport takes 11h 45m on average. On the other hand, flying from Baltimore to Belfast Intl Airport takes 12h 40m 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.

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

KLM, Aer Lingus, and British Airways are the most popular carriers operating from Washington, D.C. to Belfast

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 December 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.

$278 Cheap Flights from Washington, D.C. to Belfast in 2025/26

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

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One-way

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9:45 pm - 4:40 pm

IAD

BHD

13h 55m1 stop

9:05 am - 4:35 pm

BHD

IAD

11h 30m1 stop

$622British Airways

Thu, Mar 5 - Thu, Mar 12

9:35 pm - 2:15 pm

BWI

BHD

12h 40m1 stop

9:05 am - 7:45 pm

BHD

BWI

14h 40m1 stop

$622British Airways

Wed, Mar 11 - Thu, Mar 19

10:45 pm - 4:05 pm

IAD

BHD

13h 20m1 stop

5:35 pm - 4:35 pm

BHD

IAD

27h 00m1 stop

$642British Airways

Mon, Mar 16 - Sun, Mar 22

10:15 pm - 8:25 am

DCA

BHD

29h 10m2 stops

10:00 am - 9:30 pm

BHD

DCA

16h 30m2 stops

$643British Airways

Thu, Jan 15 - Tue, Jan 20

7:40 pm - 10:20 pm

BWI

BFS

21h 40m2 stops

6:30 am - 6:40 pm

BFS

BWI

17h 10m2 stops

$655Multiple Airlines

Thu, Jan 29 - Thu, Feb 5

12:23 pm - 4:50 pm

IAD

BHD

23h 27m2 stops

6:30 am - 5:05 pm

BHD

IAD

14h 35m1 stop

$671Delta

Thu, Mar 5 - Thu, Mar 12

6:05 pm - 4:50 pm

IAD

BHD

17h 45m1 stop

5:20 pm - 7:09 pm

BHD

IAD

30h 49m2 stops

$676KLM

Thu, Jan 15 - Tue, Jan 20

7:40 pm - 8:15 pm

IAD

BFS

19h 35m2 stops

8:20 am - 6:30 pm

BFS

IAD

15h 10m2 stops

$677Multiple Airlines

Sat, Jan 31 - Sat, Feb 7

12:23 pm - 4:50 pm

IAD

BHD

23h 27m2 stops

6:30 am - 10:59 pm

BHD

IAD

20h 29m2 stops

$681Delta

Thu, Mar 5 - Thu, Mar 12

5:05 pm - 8:50 pm

IAD

BHD

22h 45m2 stops

7:00 am - 3:35 pm

BHD

IAD

13h 35m2 stops

$766Aer Lingus

Thu, Jan 15 - Tue, Jan 20

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

IAD9:45 pmWashington, D.C. Dulles Intl

13h 55m

1 stop

BHD4:40 pmBelfast City

Mar 12

BHD9:05 amBelfast City

11h 30m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

$622

Find similar

British Airways

Mar 16

IAD10:45 pmWashington, D.C. Dulles Intl

13h 20m

1 stop

BHD4:05 pmBelfast City

Mar 22

BHD5:35 pmBelfast City

27h 00m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

$642

Find similar

British Airways

Jan 15

DCA10:15 pmWashington, D.C. Reagan-National

29h 10m

2 stops

BHD8:25 amBelfast City

Jan 20

BHD10:00 amBelfast City

16h 30m

2 stops

DCA9:30 pmWashington, D.C. Reagan-National

$643

Find similar

Delta flights from Washington, D.C. to Belfast

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

Delta

Mar 5

IAD12:23 pmWashington, D.C. Dulles Intl

23h 27m

2 stops

BHD4:50 pmBelfast City

Mar 12

BHD6:30 amBelfast City

14h 35m

1 stop

IAD5:05 pmWashington, D.C. Dulles Intl

$671

Find similar

Delta

Mar 5

IAD12:23 pmWashington, D.C. Dulles Intl

23h 27m

2 stops

BHD4:50 pmBelfast City

Mar 12

BHD6:30 amBelfast City

20h 29m

2 stops

IAD10:59 pmWashington, D.C. Dulles Intl

$681

Find similar

Delta

Mar 16

BWI3:35 pmBaltimore/Washington

21h 15m

2 stops

BHD4:50 pmBelfast City

Mar 22

BHD6:30 amBelfast City

16h 49m

2 stops

BWI7:19 pmBaltimore/Washington

$1,510

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. 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 3/5

9:45 pm-4:40 pm

1 stop13h 55m

Belfast City

Thu 3/12

9:05 am-4:35 pm

1 stop11h 30m

$622

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 3/11

9:35 pm-2:15 pm

1 stop12h 40m

Belfast City

Thu 3/19

9:05 am-7:45 pm

1 stop14h 40m

$622

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

5:35 pm-4:35 pm

1 stop27h 00m

$642

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Thu 1/15

10:15 pm-8:25 am

2 stops29h 10m

Belfast City

Tue 1/20

10:00 am-9:30 pm

2 stops16h 30m

$643

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Thu 1/29

7:40 pm-10:20 pm

2 stops21h 40m

Belfast Intl

Thu 2/5

6:30 am-6:40 pm

2 stops17h 10m

$655

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 3/5

12:23 pm-4:50 pm

2 stops23h 27m

Belfast City

Thu 3/12

6:30 am-5:05 pm

1 stop14h 35m

$671

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 1/15

6:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Tue 1/20

5:20 pm-7:09 pm

2 stops30h 49m

$676

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 1/31

7:40 pm-8:15 pm

2 stops19h 35m

Belfast Intl

Sat 2/7

8:20 am-6:30 pm

2 stops15h 10m

$677

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 3/5

12:23 pm-4:50 pm

2 stops23h 27m

Belfast City

Thu 3/12

6:30 am-10:59 pm

2 stops20h 29m

$681

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 1/15

5:05 pm-8:50 pm

2 stops22h 45m

Belfast City

Tue 1/20

7:00 am-3:35 pm

2 stops13h 35m

$766

Flights are sorted by cheapest round-trip flights first.

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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 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

Fastest flight time	10h 55m
Direct flights	None

The fastest flight from Washington, D.C. to Belfast takes 10h 55m

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 55m.
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 December 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 7,585 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

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Cheap flights from Washington, D.C. to Belfast from $278

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 1/28. 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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Big names and deals

Filter for what you want

Filter for what you want

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

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

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

Delta flights from Washington, D.C. to Belfast

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

momondo Fare Finder

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

See travel insights to Belfast from

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

KLM, Aer Lingus, and British Airways 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

Fastest flight time

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