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Cheap flights from Northern Ireland to Washington from £264

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Northern Ireland to Washington

Keep the following information in mind while searching for Northern Ireland to Washington flight deals. Data was last updated 21 February 2025.

Round-trip from

£628

One-way from

£264
Virgin Atlantic
  • Virgin Atlantic
  • 8/5-22/5
  • 2 total stops
  • 49h 20m total
  • Northern Ireland to Washington
Search Deals
4/3
  • 4/3
  • 3 total stops
  • 37h 39m total
  • Northern Ireland to Washington
Search Deals

Find flight deals from Northern Ireland to Washington

Cheapest flights from Northern Ireland to Washington
Explore the most affordable flight options available from Northern Ireland to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Mon 15/906:40BHD - SEA
1 stop12h 55mMultiple Airlines
Sun 21/915:05SEA - BHD
2 stops18h 40mMultiple Airlines
Deal found 20/2£614
Thu 8/517:25BHD - SEA
1 stop26h 15mVirgin Atlantic
Thu 22/514:10SEA - BHD
1 stop23h 05mVirgin Atlantic
Deal found 20/2£628
Thu 8/516:20BHD - SEA
1 stop34h 00mIberia
Thu 22/514:25SEA - BHD
2 stops17h 05mIberia
Deal found 20/2£630
Thu 8/506:30BHD - SEA
1 stop17h 20mDelta
Thu 22/518:10SEA - BHD
1 stop14h 45mDelta
Deal found 20/2£634
Mon 15/906:30BHD - SEA
1 stop13h 15mKLM
Sun 21/913:55SEA - BHD
1 stop23h 20mKLM
Deal found 20/2£639
Sun 6/414:55BFS - SEA
2 stops41h 04mMultiple Airlines
Sun 13/415:45SEA - BFS
2 stops22h 35mMultiple Airlines
Deal found 20/2£713
Thu 8/519:25BHD - SEA
2 stops29h 34mAer Lingus
Thu 22/518:45SEA - BHD
2 stops30h 30mAer Lingus
Deal found 20/2£751
Mon 15/919:30BHD - SEA
1 stop30h 50mBritish Airways
Sun 21/920:20SEA - BHD
1 stop13h 25mBritish Airways
Deal found 20/2£1,393

Find flights from Northern Ireland to Washington within your budget

Customise your flight search to find flights from Northern Ireland to Washington 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 858,174 searches. Data last updated 21 February 2025.

Fly from

Northern Ireland

Fly to

Washington

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

17:25-11:40

1 stop26h 15m

Seattle/Tacoma Intl

Thu 22/5

14:10-21:15

1 stop23h 05m

£628

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

16:20-18:20

1 stop34h 00m

Seattle/Tacoma Intl

Thu 22/5

14:25-15:30

2 stops17h 05m

£630

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-15:50

1 stop17h 20m

Seattle/Tacoma Intl

Thu 22/5

18:10-16:55

1 stop14h 45m

£634

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-15:50

1 stop17h 20m

Seattle/Tacoma Intl

Thu 29/5

14:10-16:55

1 stop18h 45m

£661

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/5

06:30-11:40

1 stop13h 10m

Seattle/Tacoma Intl

Fri 30/5

18:10-21:15

1 stop19h 05m

£692

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sun 6/4

14:55-23:59

2 stops41h 04m

Seattle/Tacoma Intl

Sun 13/4

15:45-22:20

2 stops22h 35m

£713

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

19:25-16:59

2 stops29h 34m

Seattle/Tacoma Intl

Thu 22/5

18:45-09:15

2 stops30h 30m

£751

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 4/3

16:20-21:59

3 stops37h 39m

£264

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Mon 17/3

21:10-09:52

3 stops43h 42m

£304

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 17/3

19:30-12:20

1 stop23h 50m

£833

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 12 results
1
2

Best time to book a flight from Northern Ireland to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Northern Ireland with our price prediction graph.
Estimated return 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 Northern Ireland to Washington

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

What is the cheapest time of day to fly from NIR to WA?

Find hourly flight availability from Northern Ireland to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

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

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit State of Washington when rainfall is around 18.0 mm.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated 21 February 2025.
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Aer Lingus
7.0
Good
1,070 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Iberia
7.0
Good
2,639 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Washington. 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 Northern Ireland to State of Washington one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at £833. Iberia flights start at £866 while deals on Delta start at £1,252 one-way.

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

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

  • How can I find direct flights from Northern Ireland to Washington?

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

  • Can I find deals for business class flights from Northern Ireland to Washington?

    Yes. Cheapflights offers flight deals from Northern Ireland to Washington 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 Northern Ireland to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to State of Washington (average of £622). Flying from Northern Ireland to State of Washington in July is currently the most expensive (average of £946). 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 Northern Ireland to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Northern Ireland to Washington

Discover the top airline that operate flights from Northern Ireland to Washington. 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 858,174 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£469Average£557FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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How does Cheapflights help users find flights from Northern Ireland to Washington?

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