How long is the flight from Washington, D.C. to Belfast?

Airlines like British Airways, Delta, and KLM fly from Washington, D.C. to Belfast in about 14h 51m. The time it takes to get you to your destination can typically vary by up to 1h 03m. The distance between Washington, D.C. and Belfast is about 3378 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What are the most popular routes from Washington, D.C. to Belfast?

Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Baltimore/Washington - Belfast Intl or Washington, D.C. Dulles Intl - Belfast City when deciding on the best route from Washington, D.C. to Belfast.

What is the cheapest time of day to fly from WAS to BFS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Belfast as you normally would.

Can I find deals for flights from Washington, D.C. to Belfast that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Belfast?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Belfast.

Can I find deals for business class flights from Washington, D.C. to Belfast?

Yes. Cheapflights offers flight deals from Washington, D.C. to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$294+ Cheap Flights from Washington, D.C. to Belfast

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Cheap flight deals from Washington, D.C. to Belfast

Cheapest

Best

Last-minute

One-way

Cheapest flights from Washington, D.C. to Belfast
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.

Tue 10/138:30 pm -

2 stops14h 50m

Tue 10/2010:30 am -

2 stops13h 50m

Deal found 8/29

$742

Tue 10/1311:20 pm -

2 stops15h 20m

Tue 10/2010:30 am -

2 stops13h 55m

Deal found 8/29

$742

Mon 10/58:30 pm -

3 stops21h 50m

Wed 10/286:25 am -

2 stops17h 05m

Deal found 8/30

$821

Mon 10/58:30 pm -

3 stops21h 50m

Wed 10/286:25 am -

2 stops17h 15m

Deal found 8/31

$824

Mon 10/128:30 pm -

2 stops14h 05m

Mon 10/198:40 am -

2 stops15h 45m

Deal found 8/28

$858

Mon 10/128:30 pm -

2 stops19h 10m

Mon 10/196:40 am -

2 stops17h 40m

Deal found 8/28

$862

Wed 12/97:40 pm -

2 stops19h 05m

Thu 12/176:30 am -

2 stops17h 10m

Deal found 8/30

$916

Sat 10/178:30 pm -

2 stops21h 10m

Sat 10/249:15 pm -

2 stops24h 30m

Deal found 9/1

$925

Fri 10/98:30 pm -

2 stops19h 30m

Tue 10/137:00 am -

2 stops17h 20m

Deal found 9/1

$927

Mon 9/218:30 pm -

2 stops18h 55m

Sat 9/266:20 am -

2 stops20h 55m

Deal found 8/29

$942

Tue 9/228:30 pm -

3 stops21h 50m

Sat 9/269:40 pm -

3 stops26h 20m

Deal found 9/1

$943

Wed 11/186:05 pm -

1 stop14h 10m

Wed 11/259:15 am -

1 stop11h 25m

Deal found 8/30

$980

Best flights from Washington, D.C. to Belfast
Discover carefully curated flight deals from Washington, D.C. to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.

Tue 10/138:30 pm -

2 stops14h 50m

Tue 10/2010:30 am -

2 stops13h 50m

Deal found 8/29

$742

Sun 2/72:54 pm -

2 stops14h 51m

Thu 2/118:50 am -

2 stops15h 08m

Deal found 9/1

$973

Mon 9/2812:26 pm -

2 stops15h 54m

Tue 10/69:50 am -

2 stops18h 36m

Deal found 8/28

$1,028

Fri 1/1512:30 pm -

2 stops15h 40m

Sun 1/179:40 am -

2 stops18h 22m

Deal found 8/29

$1,122

Fri 9/115:15 pm -

2 stops13h 40m

Wed 9/167:00 am -

2 stops17h 25m

Deal found 8/28

$1,223

Tue 10/1311:20 pm -

2 stops15h 20m

Tue 10/2010:30 am -

2 stops13h 55m

Deal found 8/29

$742

Mon 10/58:30 pm -

3 stops21h 50m

Wed 10/286:25 am -

2 stops17h 05m

Deal found 8/30

$821

Tue 1/55:21 pm -

2 stops13h 09m

Sat 1/169:20 am -

2 stops14h 34m

Deal found 8/28

$983

Mon 10/58:30 pm -

3 stops21h 50m

Wed 10/286:25 am -

2 stops17h 15m

Deal found 8/31

$824

Sun 11/89:45 pm -

1 stop11h 05m

Mon 11/167:40 pm -

1 stop25h 00m

Deal found 8/28

$1,004

Mon 10/128:30 pm -

2 stops14h 05m

Mon 10/198:40 am -

2 stops15h 45m

Deal found 8/28

$858

Fri 9/115:30 pm -

1 stop18h 25m

Wed 9/169:50 am -

2 stops18h 33m

Deal found 8/29

$1,183

Mon 9/289:30 pm -

1 stop13h 00m

Tue 10/66:30 am -

2 stops21h 40m

Deal found 8/31

$1,032

Mon 10/128:30 pm -

2 stops19h 10m

Mon 10/196:40 am -

2 stops17h 40m

Deal found 8/28

$862

Fri 1/158:10 am -

2 stops20h 00m

Sun 1/179:40 am -

2 stops18h 36m

Deal found 8/29

$1,248

Fri 1/156:55 pm -

1 stop11h 00m

Sun 1/173:15 pm -

1 stop30h 50m

Deal found 8/29

$1,089

Sat 1/97:40 pm -

3 stops19h 35m

Sun 1/1710:00 pm -

3 stops25h 40m

Deal found 8/30

$923

Fri 1/155:45 pm -

2 stops12h 10m

Sun 1/178:30 pm -

2 stops25h 38m

Deal found 8/28

$1,094

Sat 10/178:30 pm -

2 stops21h 10m

Sat 10/249:15 pm -

2 stops24h 30m

Deal found 9/1

$925

Fri 10/98:30 pm -

2 stops19h 30m

Tue 10/137:00 am -

2 stops17h 20m

Deal found 9/1

$927

Tue 9/228:30 pm -

2 stops19h 35m

Sat 9/266:20 am -

2 stops20h 55m

Deal found 9/1

$938

Mon 11/166:55 pm -

1 stop14h 20m

Wed 11/185:35 pm -

1 stop28h 30m

Deal found 9/1

$1,340

Tue 9/228:30 pm -

3 stops21h 50m

Sat 9/269:40 pm -

3 stops26h 20m

Deal found 9/1

$943

Sun 11/159:45 pm -

1 stop14h 05m

Wed 11/1812:20 pm -

1 stop12h 35m

Deal found 8/29

$1,341

Thu 1/287:40 pm -

2 stops21h 15m

Mon 2/18:30 am -

2 stops15h 10m

Deal found 8/29

$959

Mon 10/199:30 pm -

1 stop13h 00m

Wed 10/217:40 pm -

1 stop29h 00m

Deal found 8/29

$1,341

Mon 9/214:59 pm -

2 stops14h 56m

Sat 9/267:05 am -

2 stops19h 05m

Deal found 8/29

$1,366

Mon 9/218:30 pm -

3 stops21h 50m

Sat 9/266:20 am -

2 stops20h 55m

Deal found 8/29

$1,043

Fri 10/1611:00 am -

2 stops24h 30m

Fri 10/238:55 am -

2 stops16h 04m

Deal found 9/1

$1,058

Sun 10/182:56 pm -

2 stops14h 34m

Wed 10/2111:35 am -

2 stops17h 24m

Deal found 9/1

$1,545

Last-minute flights from Washington, D.C. to Belfast
Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated September 2, 2026 and is based on user searches.

Mon 9/218:30 pm -

2 stops18h 55m

Sat 9/266:20 am -

2 stops20h 55m

Deal found 8/29

$942

Tue 9/228:30 pm -

2 stops19h 35m

Sat 9/266:20 am -

2 stops20h 55m

Deal found 9/1

$938

Tue 9/228:30 pm -

3 stops21h 50m

Sat 9/269:40 pm -

3 stops26h 20m

Deal found 9/1

$943

Mon 10/58:30 pm -

3 stops21h 50m

Wed 10/286:25 am -

2 stops17h 05m

Deal found 8/30

$821

Mon 10/58:30 pm -

3 stops21h 50m

Wed 10/286:25 am -

2 stops17h 15m

Deal found 8/31

$824

Fri 10/98:30 pm -

2 stops19h 30m

Tue 10/137:00 am -

2 stops17h 20m

Deal found 9/1

$927

Mon 10/128:30 pm -

2 stops14h 05m

Mon 10/198:40 am -

2 stops15h 45m

Deal found 8/28

$858

Mon 10/128:30 pm -

2 stops19h 10m

Mon 10/196:40 am -

2 stops17h 40m

Deal found 8/28

$862

Tue 10/138:30 pm -

2 stops14h 50m

Tue 10/2010:30 am -

2 stops13h 50m

Deal found 8/29

$742

Tue 10/1311:20 pm -

2 stops15h 20m

Tue 10/2010:30 am -

2 stops13h 55m

Deal found 8/29

$742

Wed 10/148:30 pm -

3 stops20h 50m

Wed 10/218:15 pm -

3 stops31h 00m

Deal found 8/30

$995

Sat 10/178:30 pm -

2 stops21h 10m

Sat 10/249:15 pm -

2 stops24h 30m

Deal found 9/1

$925

One-way flights from Washington, D.C. to Belfast
Search for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.

Mon 10/128:30 pm -

3 stops30h 35m

Deal found 8/28

$294

Mon 10/128:30 pm -

3 stops42h 20m

Deal found 8/28

$298

Sat 9/125:15 pm -

2 stops15h 55m

Deal found 9/1

$505

Fri 9/115:15 pm -

2 stops13h 40m

Deal found 8/28

$510

Sat 9/1210:25 pm -

1 stop29h 15m

Deal found 9/1

$608

Fri 9/115:30 pm -

1 stop18h 25m

Deal found 8/28

$617

Fri 9/1111:40 am -

2 stops24h 15m

Deal found 8/28

$621

Fri 9/119:30 pm -

2 stops33h 25m

Deal found 9/1

$712

Fri 9/1111:23 am -

3 stops44h 02m

Deal found 9/1

$8,249

Fri 9/1111:31 am -

3 stops43h 54m

Deal found 9/1

$8,360

Fri 9/114:56 pm -

3 stops46h 34m

Deal found 9/1

$8,405

Find flight deals from Washington, D.C. to Belfast

Round-trip from	$742 (Mytrip)
One-way from	$294 (Kiwi.com)

From Washington, D.C. (WAS) to Belfast

Search Deals

One-way flight from Washington, D.C. (WAS) to Belfast

Search Deals

Cheapflights 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

Cheapest round-trip

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Tue 10/13

8:30 pm-4:20 pm

2 stops14h 50m

Belfast Intl

Tue 10/20

10:30 am-7:20 pm

2 stops13h 50m

$742

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Tue 10/13

11:20 pm-7:40 pm

2 stops15h 20m

Belfast Intl

Tue 10/20

10:30 am-7:25 pm

2 stops13h 55m

$742

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Mon 10/5

8:30 pm-11:20 pm

3 stops21h 50m

Belfast Intl

Wed 10/28

6:25 am-7:30 pm

2 stops17h 05m

$821

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Mon 10/5

8:30 pm-11:20 pm

3 stops21h 50m

Belfast Intl

Wed 10/28

6:25 am-7:40 pm

2 stops17h 15m

$824

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Mon 10/12

8:30 pm-3:35 pm

2 stops14h 05m

Belfast Intl

Mon 10/19

8:40 am-7:25 pm

2 stops15h 45m

$858

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Mon 10/12

8:30 pm-8:40 pm

2 stops19h 10m

Belfast Intl

Mon 10/19

6:40 am-7:20 pm

2 stops17h 40m

$862

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Sat 1/9

7:40 pm-8:15 pm

3 stops19h 35m

Belfast Intl

Sun 1/17

10:00 pm-6:40 pm

3 stops25h 40m

$923

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Sat 10/17

8:30 pm-10:40 pm

2 stops21h 10m

Belfast Intl

Sat 10/24

9:15 pm-4:45 pm

2 stops24h 30m

$925

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Fri 10/9

8:30 pm-9:00 pm

2 stops19h 30m

Belfast Intl

Tue 10/13

7:00 am-7:20 pm

2 stops17h 20m

$927

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Tue 9/22

8:30 pm-9:05 pm

2 stops19h 35m

Belfast Intl

Sat 9/26

6:20 am-10:15 pm

2 stops20h 55m

$938

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/28

Showing 1-10 of 42 resultsSorted by cheapest first

...

Best time to book a flight from Washington, D.C. to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Washington, D.C. with our price prediction graph.

WAS-BF1

IAD-BFS

IAD-BHD

BWI-BFS

DCA-BHD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Belfast

WAS-BF1

IAD-BFS

IAD-BHD

BWI-BFS

DCA-BHD

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Belfast

Peruse reviews from past customers who have flown with British Airways from Washington, D.C. to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

British Airways

6.7

Okay

8,196 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

British Airways

6.7

Okay

8,196 reviews

British Airways

6.7

Okay

8,196 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

IAH - LHR

Related info for your journey

How long is the flight from Washington, D.C. to Belfast?
Airlines like British Airways, Delta, and KLM fly from Washington, D.C. to Belfast in about 14h 51m. The time it takes to get you to your destination can typically vary by up to 1h 03m. The distance between Washington, D.C. and Belfast is about 3378 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the most popular routes from Washington, D.C. to Belfast?
Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Baltimore/Washington - Belfast Intl or Washington, D.C. Dulles Intl - Belfast City when deciding on the best route from Washington, D.C. to Belfast.
Can I find deals for flights from Washington, D.C. to Belfast that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Belfast?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Belfast.
Can I find deals for business class flights from Washington, D.C. to Belfast?
Yes. Cheapflights offers flight deals from Washington, D.C. to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$294+ Cheap flights from Washington, D.C. (WAS) to Belfast

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Washington, D.C. to Belfast

Cheapest flights from Washington, D.C. to BelfastExplore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.

Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.

Best flights from Washington, D.C. to BelfastDiscover carefully curated flight deals from Washington, D.C. to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.

Discover carefully curated flight deals from Washington, D.C. to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.

Last-minute flights from Washington, D.C. to BelfastDiscover last-minute flight deals from Washington, D.C. to Belfast. Data last updated September 2, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated September 2, 2026 and is based on user searches.

One-way flights from Washington, D.C. to BelfastSearch for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.

Search for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.

Find flight deals from Washington, D.C. to Belfast

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

Best time to book a flight from Washington, D.C. to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Reviews of airlines servicing Belfast

Peruse reviews from past customers who have flown with British Airways from Washington, D.C. to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Washington, D.C. to Belfast?

What are the most popular routes from Washington, D.C. to Belfast?

Can I find deals for flights from Washington, D.C. to Belfast that include hotel bookings?

How can I find direct flights from Washington, D.C. to Belfast?

Can I find deals for business class flights from Washington, D.C. to Belfast?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Belfast

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Belfast by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Washington, D.C. to Belfast by cabin class

Find flights from Washington, D.C. to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Washington, D.C. and Belfast flights

Browse other Washington, D.C. and Belfast flight options. Last updated on September 2, 2026.

Other flights from Washington, D.C.

Browse through other flights departing from Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on September 2, 2026.

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Cheapest flights from Washington, D.C. to Belfast
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.

Best flights from Washington, D.C. to Belfast
Discover carefully curated flight deals from Washington, D.C. to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.

Last-minute flights from Washington, D.C. to Belfast
Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated September 2, 2026 and is based on user searches.

One-way flights from Washington, D.C. to Belfast
Search for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.