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Cheap flights from Belfast to Washington from £396

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 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SEA
20 Nov — 27 Nov1
1 adult
1 adult, Economy

Find flight deals from Belfast to Washington

Enter your travel dates to find the best prices.

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

Mon 24/1106:00BFS - SEA
1 stop18h 50mMultiple Airlines
Mon 8/1219:20SEA - BFS
1 stop18h 10mMultiple Airlines
Deal found 19/10£600
Mon 24/1106:35BHD - SEA
1 stop18h 20mBritish Airways
Mon 8/1218:50SEA - BHD
1 stop13h 15mBritish Airways
Deal found 19/10£612
Mon 24/1106:30BHD - SEA
1 stop13h 15mDelta
Mon 8/1209:45SEA - BHD
2 stops23h 05mDelta
Deal found 19/10£622
Fri 12/1206:30BHD - SEA
1 stop13h 20mKLM
Fri 9/111:25SEA - BHD
2 stops21h 25mKLM
Deal found 19/10£747
Fri 12/1211:30BHD - SEA
1 stop13h 25mBritish Airways
Fri 9/118:50SEA - BHD
1 stop14h 25mBritish Airways
Deal found 19/10£749
Fri 12/1206:30BHD - SEA
2 stops22h 05mVirgin Atlantic
Fri 9/107:20SEA - BHD
2 stops25h 30mVirgin Atlantic
Deal found 19/10£755
Mon 24/1107:20BHD - SEA
2 stops22h 56mMultiple Airlines
Mon 8/1205:50SEA - BHD
3 stops23h 45mMultiple Airlines
Deal found 19/10£846
Fri 12/1207:00BFS - SEA
2 stops18h 00mMultiple Airlines
Fri 9/114:00SEA - BFS
2 stops20h 55mMultiple Airlines
Deal found 19/10£1,093
Sat 22/1117:20BHD - SEA
1 stop26h 25mMultiple Airlines
Wed 26/1115:00SEA - BHD
1 stop17h 50mMultiple Airlines
Deal found 20/10£3,865

Cheap flight deals from Belfast to Washington

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

Round-trip from

£564

One-way from

£396
17/11-24/11
  • 17/11-24/11
  • 4 total stops
  • 56h 40m total
  • Belfast to Washington
Search Deals
16/2
  • 16/2
  • 2 total stops
  • 41h 39m total
  • Belfast to Washington
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast 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 October 2025.
Use the filters below to find and compare flights from Belfast to Washington that are best for you.

Fly from

Belfast

Fly to

Washington

Route

Depart

Return

Price

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Mon 24/11

06:00-16:50

1 stop18h 50m

Seattle/Tacoma Intl

Mon 8/12

19:20-21:30

1 stop18h 10m

£600

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 24/11

06:30-11:45

1 stop13h 15m

Seattle/Tacoma Intl

Mon 8/12

09:45-16:50

2 stops23h 05m

£622

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

06:35-16:55

1 stop18h 20m

Seattle/Tacoma Intl

Mon 9/3

13:48-14:15

2 stops17h 27m

£654

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 12/12

06:30-11:50

1 stop13h 20m

Seattle/Tacoma Intl

Fri 9/1

11:25-16:50

2 stops21h 25m

£747

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 12/12

11:30-16:55

1 stop13h 25m

Seattle/Tacoma Intl

Fri 9/1

18:50-17:15

1 stop14h 25m

£749

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Fri 12/12

10:00-22:16

3 stops44h 16m

Seattle/Tacoma Intl

Fri 9/1

14:00-18:55

2 stops20h 55m

£840

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 16/2

14:15-23:54

2 stops41h 39m

£396

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 16/2

11:30-16:55

1 stop13h 25m

£413

Flights are sorted by cheapest return flights first.

Deals found on 19/10

Best time to book a flight from Belfast to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Belfast 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 Belfast 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 21 October 2025.
Check out reviews from past customers who have flown with American Airlines and British Airways from Belfast to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,023 reviews
Check prices

Food

6.4

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Crew

8.0

Overall

7.2

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
11,023 reviews
American Airlines
7.2
Good
11,023 reviews
Check prices

Food

6.4

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Crew

8.0

Overall

7.2

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
7,461 reviews
American Airlines
7.2
Good
11,023 reviews
Check prices

Food

6.4

Entertainment

6.9

Comfort

7.2

Boarding

7.5

Crew

8.0

Overall

7.2

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 Belfast 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 Belfast to State of Washington?

    There are many flights that can get you from Belfast to State of Washington in 13h 15m. Fly via Delta or American Airlines to get the fastest option. There are 4472 mi between Belfast and State of Washington. Both multi-stop and direct flights can be found to your destination and back.

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

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

  • How can I find direct flights from Belfast to Washington?

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

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

    Yes. Cheapflights offers flight deals from Belfast 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 Belfast to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Belfast to Washington

Discover the top 2 airlines that operate flights from Belfast 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 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£438Average£517FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£560Average£560FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Belfast to Washington?

When you search for this flight from Belfast to Washington, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Belfast to Washington?

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to Washington for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Belfast to Washington with no change fees?

Yes, we can. To see specific flights from Belfast to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Belfast to Washington become cheaper?

Yes! Start tracking prices for Belfast to Washington flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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