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Cheap flights from Belfast Intl Airport to Washington from £902

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from Belfast Intl to Washington
Explore the most affordable flight options available from Belfast Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.

Wed 5/1115:45BFS - SEA
3 stops33h 15mMultiple Airlines
Fri 7/1115:10SEA - BFS
3 stops23h 25mMultiple Airlines
Deal found 30/10£902
Tue 4/1109:35BFS - SEA
2 stops35h 45mMultiple Airlines
Fri 7/1115:10SEA - BFS
3 stops23h 25mMultiple Airlines
Deal found 30/10£1,073

Best time to book a flight from Belfast Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Belfast Intl 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 Intl Airport 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 31 October 2025.
Read reviews from past customers who have flown with American Airlines and British Airways from Belfast Intl Airport to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,034 reviews
Check prices

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

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
11,034 reviews
American Airlines
7.2
Good
11,034 reviews
Check prices

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

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
7,488 reviews
American Airlines
7.2
Good
11,034 reviews
Check prices

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

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 Belfast Intl to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl 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.

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Alternative routes for Belfast Intl to Washington

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Top 2 airlines flying from Belfast Intl to Washington

Discover the top 2 airlines that operate flights from Belfast Intl 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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£446Average£527FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£570Average£570FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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