What are the cheapest airlines flying from Washington, D.C. to Belfast round-trip?

Cheapflights users have booked flights from Washington, D.C. to Belfast round-trip from $647. Other airlines that can offer you cheap pricing are Iberia, from $650, and American Airlines, from $652. You may be able to fly from Washington, D.C. to Belfast for 14% less than the average price by searching for these airlines.

What is the cheapest month to book a flight from Washington, D.C. to Belfast?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Belfast (average of $657). Flying from Washington, D.C. to Belfast in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Washington, D.C. to Belfast?

Travelers seeking maximum savings on their Washington, D.C. to Belfast flight should consider departing on Thursday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 day to fly round-trip from Washington, D.C. to Belfast?

Monday is generally a great day to depart. Flying on this day could help you save up to 29%.

What is the cheapest month to fly from Washington, D.C. to Belfast?

Our data shows that October tends to be the cheapest month to fly to Belfast from Washington, D.C.. Users have commonly found prices around $761 for the month, but tickets can be as low as $578. Due to multiple factors, prepare for potentially higher prices in July.

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

It’s typically best to fly out from Washington, D.C. to Belfast at noon. Doing so could potentially save you 10% on the flight price compared to flying in the morning, which is usually more expensive.

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.

$645+ Flights from Washington, D.C. to Belfast

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

Round-trip from	$645 (Trip.com)
Popular in	July
Cheapest in	October
Average price	$731

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

Search Deals

High demand for flights, 17% potential price rise

Search Deals

Best time to find cheap flights, 3% potential price drop

Search Deals

Average for round-trip flights in December 2024

Search Deals

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

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 December 18, 2024.

Tue 3/45:30 pmIAD - BFS

2 stops18h 30mMultiple Airlines

Sun 3/911:00 amBFS - IAD

2 stops31h 00mMultiple Airlines

Deal found 12/17

$645

Thu 3/1310:55 pmIAD - BHD

1 stop11h 05mBritish Airways

Mon 3/177:30 pmBHD - IAD

1 stop29h 15mBritish Airways

Deal found 12/18

$647

Tue 3/46:00 pmIAD - BHD

1 stop11h 30mIberia

Sun 3/99:10 amBHD - IAD

1 stop11h 25mIberia

Deal found 12/17

$650

Tue 1/219:55 pmIAD - BHD

1 stop13h 50mAmerican Airlines

Mon 1/279:10 amBHD - IAD

1 stop11h 25mAmerican Airlines

Deal found 12/16

$652

Thu 3/137:59 pmIAD - BHD

2 stops21h 01mDelta

Mon 3/176:30 amBHD - IAD

1 stop14h 15mDelta

Deal found 12/18

$690

Sat 1/187:30 pmDCA - BHD

2 stops16h 20mKLM

Tue 1/216:30 amBHD - DCA

2 stops15h 50mKLM

Deal found 12/16

$1,202

Thu 1/98:30 pmBWI - BHD

1 stop12h 30mBritish Airways

Mon 1/1311:30 amBHD - BWI

1 stop12h 15mBritish Airways

Deal found 12/18

$651

Tue 3/48:09 pmBWI - BHD

2 stops15h 36mAmerican Airlines

Sun 3/99:10 amBHD - BWI

1 stop14h 35mAmerican Airlines

Deal found 12/17

$655

Tue 3/46:10 pmBWI - BFS

2 stops17h 50mMultiple Airlines

Sun 3/99:10 pmBFS - BWI

2 stops24h 50mMultiple Airlines

Deal found 12/17

$693

Fri 1/103:30 pmBWI - BHD

2 stops20h 20mDelta

Mon 1/136:30 amBHD - BWI

2 stops17h 48mDelta

Deal found 12/16

$701

Tue 3/44:10 pmDCA - BHD

2 stops13h 20mBritish Airways

Sun 3/96:30 amBHD - DCA

2 stops16h 24mBritish Airways

Deal found 12/17

$655

Thu 1/96:05 pmDCA - BHD

2 stops14h 55mAmerican Airlines

Mon 1/136:35 amBHD - DCA

2 stops16h 24mAmerican Airlines

Deal found 12/18

$665

Last-minute flights from Washington, D.C. to Belfast
Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated December 18, 2024 and is based on user searches.

Wed 1/85:00 pmDCA - BHD

2 stops18h 50mDelta

Mon 1/136:30 amBHD - DCA

2 stops21h 53mDelta

Deal found 12/16

$701

Thu 1/98:30 pmBWI - BHD

1 stop12h 30mBritish Airways

Mon 1/1311:30 amBHD - BWI

1 stop12h 15mBritish Airways

Deal found 12/18

$651

Thu 1/92:54 pmDCA - BHD

2 stops18h 06mBritish Airways

Mon 1/1311:30 amBHD - DCA

2 stops16h 11mBritish Airways

Deal found 12/16

$656

Thu 1/96:05 pmDCA - BHD

2 stops14h 55mAmerican Airlines

Mon 1/136:35 amBHD - DCA

2 stops16h 24mAmerican Airlines

Deal found 12/18

$665

Fri 1/103:30 pmBWI - BHD

2 stops20h 20mDelta

Mon 1/136:30 amBHD - BWI

2 stops17h 48mDelta

Deal found 12/16

$701

Tue 1/147:30 pmBWI - BFS

2 stops17h 25mMultiple Airlines

Mon 1/2010:25 pmBFS - BWI

3 stops47h 35mMultiple Airlines

Deal found 12/16

$737

Tue 1/147:40 pmIAD - BFS

2 stops17h 15mMultiple Airlines

Mon 1/2010:25 pmBFS - IAD

3 stops25h 00mMultiple Airlines

Deal found 12/16

$758

Thu 1/165:16 pmIAD - BHD

2 stops18h 34mDelta

Mon 1/206:30 amBHD - IAD

1 stop14h 15mDelta

Deal found 12/16

$691

Fri 1/176:00 pmIAD - BHD

1 stop11h 30mBritish Airways

Tue 1/217:25 pmBHD - IAD

1 stop25h 10mBritish Airways

Deal found 12/16

$648

Fri 1/175:35 pmIAD - BHD

1 stop18h 15mMultiple Airlines

Wed 1/226:30 amBHD - IAD

1 stop14h 15mMultiple Airlines

Deal found 12/16

$686

Tue 1/219:55 pmIAD - BHD

1 stop13h 50mAmerican Airlines

Mon 1/279:10 amBHD - IAD

1 stop11h 25mAmerican Airlines

Deal found 12/16

$652

Tue 1/215:26 pmBWI - BHD

2 stops15h 09mAmerican Airlines

Mon 1/276:35 amBHD - BWI

1 stop17h 10mAmerican Airlines

Deal found 12/16

$656

Find flights from Washington, D.C. to Belfast within your budget

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 3/4

5:30 pm-5:00 pm

2 stops18h 30m

Belfast Intl

Sun 3/9

11:00 am-2:00 pm

2 stops31h 00m

$645

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 3/13

10:55 pm-2:00 pm

1 stop11h 05m

Belfast City

Mon 3/17

7:30 pm-8:45 pm

1 stop29h 15m

$647

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 3/4

6:00 pm-10:30 am

1 stop11h 30m

Belfast City

Sun 3/9

9:10 am-4:35 pm

1 stop11h 25m

$650

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Thu 1/9

8:30 pm-2:00 pm

1 stop12h 30m

Belfast City

Mon 1/13

11:30 am-6:45 pm

1 stop12h 15m

$651

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 1/21

9:55 pm-4:45 pm

1 stop13h 50m

Belfast City

Mon 1/27

9:10 am-3:35 pm

1 stop11h 25m

$652

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Tue 3/4

8:09 pm-4:45 pm

2 stops15h 36m

Belfast City

Sun 3/9

9:10 am-7:45 pm

1 stop14h 35m

$655

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 3/4

4:10 pm-10:30 am

2 stops13h 20m

Belfast City

Sun 3/9

6:30 am-5:54 pm

2 stops16h 24m

$655

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Thu 1/9

6:05 pm-2:00 pm

2 stops14h 55m

Belfast City

Mon 1/13

6:35 am-5:59 pm

2 stops16h 24m

$665

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 1/17

5:35 pm-4:50 pm

1 stop18h 15m

Belfast City

Wed 1/22

6:30 am-3:45 pm

1 stop14h 15m

$686

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 3/13

7:59 pm-9:00 pm

2 stops21h 01m

Belfast City

Mon 3/17

6:30 am-4:45 pm

1 stop14h 15m

$690

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 18 results

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.

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.

Travel insights for flights from Washington, D.C. to Belfast

Get recent, data-driven insights about flights from Washington, D.C. to Belfast including ideal travel times, pricing trends, and more.

Rainfall in Belfast by month

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.

Temperature in Belfast by month

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).

Reviews of airlines servicing Belfast

Read reviews from past customers who have flown British Airways, Delta and American Airlines from Washington, D.C. to Belfast. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

8,604 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,349 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Iberia

7.0

Good

2,656 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways

6.6

Okay

6,820 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. to Belfast round-trip?
Cheapflights users have booked flights from Washington, D.C. to Belfast round-trip from $647. Other airlines that can offer you cheap pricing are Iberia, from $650, and American Airlines, from $652. You may be able to fly from Washington, D.C. to Belfast for 14% less than the average price by searching for these airlines.
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.
What is the cheapest month to book a flight from Washington, D.C. to Belfast?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Belfast (average of $657). Flying from Washington, D.C. to Belfast in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to Belfast

Dulles Intl to Belfast Intl flights

Dulles Intl to Belfast City flights

Reagan-National to Belfast Intl flights

Reagan-National to Belfast City flights

Top airline flying from Washington, D.C. to Belfast

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$557	Average$818	FlexibilityNo cancel fee	On-time70%

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$645+ Cheap flights from Washington, D.C. (WAS) to Belfast

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Belfast with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Round-trip from

Popular in

Cheapest in

Average price

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

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 December 18, 2024.

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 December 18, 2024.

Find flights from Washington, D.C. to Belfast within your budget

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.

Travel insights for flights from Washington, D.C. to Belfast

Get recent, data-driven insights about flights from Washington, D.C. to Belfast including ideal travel times, pricing trends, and more.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

Reviews of airlines servicing Belfast

Read reviews from past customers who have flown British Airways, Delta and American Airlines from Washington, D.C. to Belfast. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Washington, D.C. to Belfast round-trip?

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?

What is the cheapest month to book a flight 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.

Top airline flying from Washington, D.C. to Belfast

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Book with Flexibility

Travel Smart

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 December 18, 2024.