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$401+ Cheap flights from Washington, D.C. (WAS) to Northern Ireland

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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BFS
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Northern Ireland

Keep the following information in mind while searching for Washington, D.C. to Northern Ireland flight deals. Data was last updated April 1, 2025.

Round-trip from

$522
(PLAY)

One-way from

$431
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$658
From Washington, D.C. (WAS) to Northern Ireland
Search Deals
One-way flight from Washington, D.C. (WAS) to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($178 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 Northern Ireland

Cheapest flights from Washington, D.C. to Northern Ireland
Explore the most affordable flight options available from Washington, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.

This PLAY deal was found by Cheapflights users on 3/31. 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 PLAY is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:50 pmBWI - BFS
2 stops23h 20mMultiple Airlines
Wed 5/146:00 amBFS - BWI
2 stops16h 40mMultiple Airlines
Deal found 3/31$522
This oojo deal was found by Cheapflights users on 3/31. 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.
Mon 4/289:20 pmBWI - BHD
1 stop13h 20mBritish Airways
Mon 5/57:30 pmBHD - BWI
1 stop29h 05mBritish Airways
Deal found 3/31$636
This oojo deal was found by Cheapflights users on 3/31. 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.
Mon 4/287:55 pmDCA - BHD
2 stops16h 35mBritish Airways
Mon 5/56:30 pmBHD - DCA
2 stops26h 25mBritish Airways
Deal found 3/31$645
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/65:40 pmIAD - BHD
1 stop10h 20mAmerican Airlines
Wed 5/141:50 pmBHD - IAD
1 stop11h 15mAmerican Airlines
Deal found 3/31$660
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Mon 4/288:30 pmIAD - BFS
3 stops23h 05mMultiple Airlines
Mon 5/512:35 pmBFS - IAD
3 stops37h 15mMultiple Airlines
Deal found 3/31$660
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/66:20 pmBWI - BHD
2 stops16h 00mAmerican Airlines
Wed 5/1411:30 amBHD - BWI
1 stop13h 05mAmerican Airlines
Deal found 3/31$665
This KLM deal was found by Cheapflights users on 3/30. 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.
Fri 4/45:25 pmIAD - BHD
1 stop18h 30mKLM
Sun 4/65:25 pmBHD - IAD
1 stop27h 10mKLM
Deal found 3/30$695
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 4/122:55 pmDCA - BHD
2 stops14h 15mAmerican Airlines
Sat 4/197:05 amBHD - DCA
2 stops16h 39mAmerican Airlines
Deal found 3/31$745
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:25 pmIAD - BHD
1 stop11h 30mBritish Airways
Sat 8/169:35 amBHD - IAD
1 stop15h 40mBritish Airways
Deal found 3/30$761
This Delta deal was found by Cheapflights users on 3/31. 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 5/65:32 pmIAD - BHD
2 stops22h 33mDelta
Wed 5/146:30 amBHD - IAD
2 stops20h 04mDelta
Deal found 3/31$765
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Mon 4/288:30 pmBWI - BHD
2 stops15h 50mMultiple Airlines
Mon 5/57:05 amBHD - BWI
3 stops38h 41mMultiple Airlines
Deal found 3/31$775
This Mytrip deal was found by Cheapflights users on 3/31. 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 5/226:59 amDCA - BFS
3 stops28h 16mMultiple Airlines
Fri 5/306:40 pmBFS - DCA
3 stops32h 48mMultiple Airlines
Deal found 3/31$929

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. to Northern Ireland 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 1, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Northern Ireland that are best for you.

Fly from

Washington, D.C.

Fly to

Northern Ireland

Route

Depart

Return

Price

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Tue 5/6

6:50 pm-11:10 pm

2 stops23h 20m

Belfast Intl

Wed 5/14

6:00 am-5:40 pm

2 stops16h 40m

$522

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 4/28

9:20 pm-3:40 pm

1 stop13h 20m

Belfast City

Mon 5/5

7:30 pm-7:35 pm

1 stop29h 05m

$636

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 4/28

7:55 pm-5:30 pm

2 stops16h 35m

Belfast City

Mon 5/5

6:30 pm-3:55 pm

2 stops26h 25m

$645

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 5/6

5:40 pm-9:00 am

1 stop10h 20m

Belfast City

Wed 5/14

1:50 pm-8:05 pm

1 stop11h 15m

$660

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 4/28

8:30 pm-12:35 am

3 stops23h 05m

Belfast Intl

Mon 5/5

12:35 pm-8:50 pm

3 stops37h 15m

$660

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Tue 5/6

6:20 pm-3:20 pm

2 stops16h 00m

Belfast City

Wed 5/14

11:30 am-7:35 pm

1 stop13h 05m

$665

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 5/6

1:59 pm-10:35 am

2 stops15h 36m

Belfast City

Wed 5/14

10:00 am-3:45 pm

1 stop10h 45m

$695

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sat 4/12

2:55 pm-10:10 am

2 stops14h 15m

Belfast City

Sat 4/19

7:05 am-6:44 pm

2 stops16h 39m

$745

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 5/6

5:32 pm-9:05 pm

2 stops22h 33m

Belfast City

Wed 5/14

6:30 am-9:34 pm

2 stops20h 04m

$765

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 4/28

8:30 pm-5:20 pm

2 stops15h 50m

Belfast City

Mon 5/5

7:05 am-4:46 pm

3 stops38h 41m

$775

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 26 results
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Best time to book a flight from Washington, D.C. to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland 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 Northern Ireland

Rainfall in Northern Ireland by month

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

In terms of precipitation, rainfall in Northern Ireland 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 Northern Ireland when rainfall is around 2.0 in.

Temperature in Northern Ireland by month

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

If weather is an important factor for your trip to Northern Ireland, 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 Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. 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 Northern Ireland. Reviews last updated April 1, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Northern Ireland, such as Delta, KLM and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,899 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
1,060 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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.
British Airways
6.6
Okay
6,713 reviews
Delta
8.0
Very good
7,899 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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 Northern Ireland. 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 to fly from Washington, D.C. to Northern Ireland one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $480. American Airlines flights start at $662 while deals on Aer Lingus start at $670 one-way.

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

    When deciding which route to take from Washington, D.C. to Northern Ireland consider Washington, D.C. Dulles Intl - Belfast Intl, Washington, D.C. Reagan-National - Belfast Intl or Washington, D.C. Dulles Intl - Belfast City as they are the most popular.

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

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

  • How can I find direct flights from Washington, D.C. to Northern Ireland?

    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 Northern Ireland.

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to Northern Ireland 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 Northern Ireland?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Northern Ireland (average of $657). Flying from Washington, D.C. to Northern Ireland 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 Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to London City flights
Reagan-National to Gatwick flights
Dulles Intl to Edinburgh flights
Dulles Intl to Stansted flights
Reagan-National to London City flights
Reagan-National to Edinburgh flights
Dulles Intl to Luton flights
Dulles Intl to Glasgow Intl flights
Dulles Intl to Manchester flights
Reagan-National to Glasgow Intl flights
Reagan-National to Manchester flights
Reagan-National to Stansted flights
Dulles Intl to Southampton flights
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Dulles Intl to Belfast Intl flights
Dulles Intl to Liverpool flights
Dulles Intl to Belfast City flights
Reagan-National to Belfast Intl flights
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Reagan-National to Belfast City flights
Dulles Intl to Aberdeen flights
Dulles Intl to Newcastle upon Tyne flights
Reagan-National to Newcastle upon Tyne flights
Dulles Intl to Leeds flights
Reagan-National to Luton flights
Dulles Intl to Bristol flights
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Reagan-National to Leeds flights
Dulles Intl to Sumburgh/Shetland flights
Reagan-National to Liverpool flights
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Reagan-National to Bristol flights
Dulles Intl to Kirkwall flights
Dulles Intl to Newquay flights
Dulles Intl to Isle of Islay flights
Dulles Intl to Southend flights
Dulles Intl to Exeter flights
Reagan-National to Sumburgh/Shetland flights
Dulles Intl to Bournemouth flights
Reagan-National to Newquay flights

Top airline flying from Washington, D.C. to Northern Ireland

Discover the top airline that operate flights from Washington, D.C. to Northern Ireland. 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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$578Average$924FlexibilityNo cancel feeOn-time70%
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