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$478+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.

Round-trip from

$599
(Mytrip)

One-way from

$485
(British Airways)

Popular in

July

Cheapest in

October

Average price

$659
From Washington, D.C. (WAS) to Belfast
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One-way flight from Washington, D.C. (WAS) to Belfast
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Highest demand for flights based on searches. 20% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Washington, D.C. to Belfast

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 enero 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/86:50 pmBWI - BFS
2 stops19h 25mMultiple Airlines
jue. 5/16:00 amBFS - BWI
2 stops16h 40mMultiple Airlines
Deal found 1/20$599
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/210:40 pmIAD - BHD
1 stop11h 55mBritish Airways
mié. 4/166:50 amBHD - IAD
1 stop14h 00mBritish Airways
Deal found 1/20$614
This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/249:30 pmBWI - BHD
1 stop12h 40mBritish Airways
lun. 3/317:30 pmBHD - BWI
1 stop29h 05mBritish Airways
Deal found 1/21$617
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/197:30 pmIAD - BHD
2 stops16h 05mAmerican Airlines
mar. 2/258:40 amBHD - IAD
1 stop11h 55mAmerican Airlines
Deal found 1/21$620
This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/243:10 pmDCA - BHD
2 stops15h 20mBritish Airways
lun. 3/317:30 pmBHD - DCA
2 stops25h 29mBritish Airways
Deal found 1/21$630
This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/248:30 pmBWI - BHD
2 stops20h 00mMultiple Airlines
lun. 3/318:50 amBHD - BWI
2 stops15h 35mMultiple Airlines
Deal found 1/21$645
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/244:53 pmBWI - BHD
2 stops13h 37mAmerican Airlines
lun. 3/316:40 amBHD - BWI
1 stop17h 55mAmerican Airlines
Deal found 1/21$650
This KLM deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/195:35 pmIAD - BHD
1 stop18h 15mKLM
mar. 2/256:30 amBHD - IAD
1 stop14h 15mKLM
Deal found 1/21$651
This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/248:40 pmIAD - BFS
2 stops20h 25mMultiple Airlines
lun. 3/318:15 amBFS - IAD
2 stops16h 05mMultiple Airlines
Deal found 1/21$672
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/84:45 pmBWI - BHD
2 stops19h 10mDelta
jue. 5/16:30 amBHD - BWI
2 stops14h 59mDelta
Deal found 1/20$697
This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/2411:10 amDCA - BFS
2 stops28h 35mMultiple Airlines
lun. 3/313:30 pmBFS - DCA
3 stops34h 38mMultiple Airlines
Deal found 1/21$741
This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/163:55 pmIAD - BHD
3 stops24h 55mMultiple Airlines
dom. 3/237:00 amBHD - IAD
2 stops18h 05mMultiple Airlines
Deal found 1/21$818

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

Customize your flight search to find flights from Washington, D.C. to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

mar. 4/8

6:50 pm-7:15 pm

2 stops19h 25m

Belfast Intl

jue. 5/1

6:00 am-5:40 pm

2 stops16h 40m

$599

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

mié. 4/2

10:40 pm-3:35 pm

1 stop11h 55m

Belfast City

mié. 4/16

6:50 am-3:50 pm

1 stop14h 00m

$614

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

lun. 3/24

9:30 pm-2:10 pm

1 stop12h 40m

Belfast City

lun. 3/31

7:30 pm-7:35 pm

1 stop29h 05m

$617

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

mié. 2/19

7:30 pm-4:35 pm

2 stops16h 05m

Belfast City

mar. 2/25

8:40 am-3:35 pm

1 stop11h 55m

$620

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

lun. 3/24

3:10 pm-10:30 am

2 stops15h 20m

Belfast City

lun. 3/31

7:30 pm-3:59 pm

2 stops25h 29m

$630

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

lun. 3/24

8:30 pm-8:30 pm

2 stops20h 00m

Belfast City

lun. 3/31

8:50 am-7:25 pm

2 stops15h 35m

$645

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

lun. 3/24

4:53 pm-10:30 am

2 stops13h 37m

Belfast City

lun. 3/31

6:40 am-7:35 pm

1 stop17h 55m

$650

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

mié. 2/19

5:35 pm-4:50 pm

1 stop18h 15m

Belfast City

mar. 2/25

6:30 am-3:45 pm

1 stop14h 15m

$651

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

lun. 3/24

8:40 pm-9:05 pm

2 stops20h 25m

Belfast Intl

lun. 3/31

8:15 am-7:20 pm

2 stops16h 05m

$672

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

mar. 4/8

4:45 pm-4:55 pm

2 stops19h 10m

Belfast City

jue. 5/1

6:30 am-4:29 pm

2 stops14h 59m

$697

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 21 results
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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

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

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

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated enero 21, 2025.
Read reviews from past customers who have flown British Airways 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
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

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
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
665 reviews
Delta
8.0
Very good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

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
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

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

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?

    Cheapflights users have booked flights from Washington, D.C. to Belfast round-trip from $614. Other airlines that can offer you cheap pricing are American Airlines, from $620, and KLM, from $651. You may be able to fly from Washington, D.C. to Belfast for 17% 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, Washington, D.C. Dulles Intl - Belfast City or Washington, D.C. Reagan-National - Belfast Intl 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

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Alternative routes for Washington, D.C. to Belfast

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

Discover the top airline that operate flights from Washington, D.C. to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$557Average$828FlexibilityNo cancel feeOn-time70%
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