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Cheap flights from Northern Ireland to Washington from £621

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

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 29 October 2025.

Round-trip from

£621
24/11-1/12
  • 24/11-1/12
  • 4 total stops
  • 39h 35m total
  • Northern Ireland to Washington
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Find flight deals from Northern Ireland to Washington

Enter your travel dates to find the best prices.

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 29 October 2025.

Mon 24/1107:20BHD - SEA
2 stops17h 40mMultiple Airlines
Mon 1/1214:35SEA - BHD
2 stops21h 55mMultiple Airlines
Deal found 27/10£621
Mon 24/1106:30BHD - SEA
1 stop13h 15mDelta
Mon 1/1215:05SEA - BHD
1 stop21h 55mDelta
Deal found 27/10£622
Mon 24/1106:30BHD - SEA
2 stops20h 11mVirgin Atlantic
Mon 1/1215:05SEA - BHD
1 stop17h 45mVirgin Atlantic
Deal found 27/10£627
Mon 24/1107:50BFS - SEA
2 stops38h 30mMultiple Airlines
Mon 1/1222:15SEA - BFS
1 stop26h 05mMultiple Airlines
Deal found 27/10£752

Cheapflights Fare Finder

 
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 29 October 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington that are best for you.

Fly from

Northern Ireland

Fly to

Washington

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

06:30-11:45

1 stop13h 15m

Seattle/Tacoma Intl

Mon 1/12

15:05-21:00

1 stop21h 55m

£622

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

06:30-18:41

2 stops20h 11m

Seattle/Tacoma Intl

Mon 1/12

15:05-16:50

1 stop17h 45m

£627

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

15:05-11:30

1 stop28h 25m

Seattle/Tacoma Intl

Mon 9/3

07:00-14:15

2 stops24h 15m

£654

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

09:05-16:55

1 stop15h 50m

Seattle/Tacoma Intl

Mon 9/3

19:50-18:35

1 stop15h 45m

£658

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Mon 24/11

07:50-14:20

2 stops38h 30m

Seattle/Tacoma Intl

Mon 1/12

22:15-08:20

1 stop26h 05m

£752

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

17:20-17:00

3 stops31h 40m

Seattle/Tacoma Intl

Mon 1/12

14:35-20:50

2 stops22h 15m

£879

Flights are sorted by cheapest return flights first.

Deals found on 27/10

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.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Washington
No data available for this route at this time. Please check back soon.

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 29 October 2025.
Read through reviews of airlines operating flights from Northern Ireland to Washington, such as American Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,032 reviews
Check prices

Overall

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Nordia,Sept 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.
American Airlines
7.2
Good
11,032 reviews
American Airlines
7.2
Good
11,032 reviews
Check prices

Overall

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Nordia,Sept 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.
British Airways
6.7
Okay
7,483 reviews
American Airlines
7.2
Good
11,032 reviews
Check prices

Overall

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Nordia,Sept 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.

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.

  • How long is the flight from Northern Ireland to State of Washington?

    For as low as £622, Delta can have you in State of Washington from Northern Ireland in 13h 15m. The distance between Northern Ireland and State of Washington is about 4472 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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.

See more FAQs

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Alternative routes for Northern Ireland to Washington

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Top 2 airlines flying from Northern Ireland to Washington

Discover the top 2 airlines 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 29 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£442Average£521FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£564Average£564FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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