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$376+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Round-trip from

$666
(American Airlines)

One-way from

$376
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$663
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. 19% potential increase in price ($183 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 22, 2025.

This American Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 9/210:40 pmIAD - BHD
1 stop13h 50mAmerican Airlines
Mon 9/86:40 amBHD - IAD
1 stop18h 30mAmerican Airlines
Deal found 4/22$666
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 9/29:20 pmBWI - BHD
1 stop13h 00mAmerican Airlines
Mon 9/81:50 pmBHD - BWI
1 stop10h 45mAmerican Airlines
Deal found 4/22$666
This British Airways deal was found by Cheapflights users on 4/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/27:25 pmIAD - BHD
1 stop10h 10mBritish Airways
Mon 9/812:15 pmBHD - IAD
1 stop12h 55mBritish Airways
Deal found 4/22$668
This British Airways deal was found by Cheapflights users on 4/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/249:20 pmBWI - BHD
1 stop10h 55mBritish Airways
Wed 5/710:00 amBHD - BWI
1 stop14h 35mBritish Airways
Deal found 4/22$675
This oojo deal was found by Cheapflights users on 4/21. 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.
Thu 10/305:52 pmDCA - BHD
2 stops12h 28mBritish Airways
Thu 11/66:35 amBHD - DCA
2 stops14h 50mBritish Airways
Deal found 4/21$680
This Mytrip deal was found by Cheapflights users on 4/22. 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.
Tue 5/206:50 pmBWI - BFS
2 stops21h 40mMultiple Airlines
Tue 5/277:25 amBFS - BWI
2 stops15h 15mMultiple Airlines
Deal found 4/22$684
This Virgin Atlantic deal was found by Cheapflights users on 4/22. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/245:25 pmIAD - BHD
1 stop18h 30mVirgin Atlantic
Wed 5/76:30 amBHD - IAD
1 stop14h 05mVirgin Atlantic
Deal found 4/22$703
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:00 pmBWI - BHD
2 stops23h 50mDelta
Thu 11/66:30 amBHD - BWI
2 stops15h 34mDelta
Deal found 4/21$717
This Delta deal was found by Cheapflights users on 4/22. 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.
Tue 9/23:00 pmIAD - BHD
2 stops20h 55mDelta
Mon 9/86:30 amBHD - IAD
2 stops15h 01mDelta
Deal found 4/22$718
This Trip.com deal was found by Cheapflights users on 4/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:40 pmIAD - BHD
2 stops12h 55mMultiple Airlines
Thu 11/67:10 amBHD - IAD
2 stops16h 10mMultiple Airlines
Deal found 4/21$795
This Mytrip deal was found by Cheapflights users on 4/22. 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.
Wed 8/611:15 pmIAD - BFS
2 stops17h 45mMultiple Airlines
Sun 8/106:45 amBFS - IAD
2 stops31h 52mMultiple Airlines
Deal found 4/22$798
This Mytrip deal was found by Cheapflights users on 4/22. 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.
Thu 4/249:20 pmBWI - BHD
1 stop10h 55mMultiple Airlines
Wed 5/77:05 amBHD - BWI
3 stops28h 05mMultiple Airlines
Deal found 4/22$820

Cheapflights Fare Finder

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 April 22, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Belfast that are best for you.

Fly from

Washington, D.C.

Fly to

Belfast

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/2

10:40 pm-5:30 pm

1 stop13h 50m

Belfast City

Mon 9/8

6:40 am-8:10 pm

1 stop18h 30m

$666

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Tue 9/2

9:20 pm-3:20 pm

1 stop13h 00m

Belfast City

Mon 9/8

1:50 pm-7:35 pm

1 stop10h 45m

$666

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/2

7:25 pm-10:35 am

1 stop10h 10m

Belfast City

Mon 9/8

12:15 pm-8:10 pm

1 stop12h 55m

$668

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 9/2

5:29 pm-1:00 pm

2 stops14h 31m

Belfast City

Mon 9/8

9:50 am-11:50 pm

2 stops19h 00m

$681

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Tue 5/20

6:50 pm-9:30 pm

2 stops21h 40m

Belfast Intl

Tue 5/27

7:25 am-5:40 pm

2 stops15h 15m

$684

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Tue 9/2

3:59 pm-10:35 am

2 stops13h 36m

Belfast City

Mon 9/8

12:15 pm-7:35 pm

1 stop12h 20m

$701

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/2

3:00 pm-4:55 pm

2 stops20h 55m

Belfast City

Mon 9/8

6:30 am-4:31 pm

2 stops15h 01m

$718

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 8/6

11:15 pm-10:00 pm

2 stops17h 45m

Belfast Intl

Sun 8/10

6:45 am-9:37 am

2 stops31h 52m

$798

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/2

5:20 pm-1:00 pm

2 stops14h 40m

Belfast City

Mon 9/8

6:40 am-3:50 pm

2 stops14h 10m

$878

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Thu 6/5

6:00 am-4:15 pm

3 stops29h 15m

Belfast Intl

Thu 6/12

6:00 am-6:03 pm

2 stops17h 03m

$894

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 27 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.

Cheapflights Insights

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

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 April 22, 2025.
Read reviews from past customers who have flown Delta, KLM and Virgin Atlantic 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
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,067 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 $666. Other airlines that can offer you cheap pricing are British Airways, from $668, and Delta, from $718. You may be able to fly from Washington, D.C. to Belfast for 11% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Washington, D.C. to Belfast one-way?

    $398 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Virgin Atlantic and KLM, with prices starting from $823 and $825, respectively.

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

    Most travelers choose Washington, D.C. Reagan-National - Belfast Intl, Washington, D.C. Dulles Intl - 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

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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.
Reagan-National to Belfast Intl flights
Dulles Intl to Belfast Intl flights
Dulles Intl to Belfast City 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$575Average$913FlexibilityNo cancel feeOn-time70%

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