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Cheap flights from Washington to Belfast City Airport from £172

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BHD
21 Aug — 28 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Belfast City

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Belfast City
Explore the most affordable flight options available from Washington to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 July 2026.

Mon 5/1020:20
SEA
-
BHD
1 stop15h 05m
British Airways
Thu 22/1012:45
BHD
-
SEA
1 stop13h 40m
British Airways
Deal found 17/7£706
Wed 2/913:30
SEA
-
BHD
1 stop16h 05m
British Airways
Tue 8/916:25
BHD
-
SEA
1 stop27h 10m
British Airways
Deal found 19/7£723
Wed 2/908:10
SEA
-
BHD
2 stops21h 25m
British Airways
Mon 7/918:30
BHD
-
SEA
1 stop25h 05m
British Airways
Deal found 19/7£730
Thu 3/920:20
SEA
-
BHD
1 stop16h 15m
British Airways
Mon 7/919:35
BHD
-
SEA
1 stop24h 00m
British Airways
Deal found 19/7£742
Tue 1/920:20
SEA
-
BHD
1 stop16h 15m
British Airways
Tue 8/913:45
BHD
-
SEA
1 stop29h 50m
British Airways
Deal found 19/7£756
Fri 4/920:20
SEA
-
BHD
1 stop16h 15m
British Airways
Wed 9/911:35
BHD
-
SEA
1 stop32h 00m
British Airways
Deal found 19/7£760
Fri 18/1208:00
PDX
-
BHD
2 stops18h 30m
British Airways
Sun 27/1217:35
BHD
-
PDX
1 stop30h 15m
British Airways
Deal found 17/7£911
Fri 18/1208:00
PDX
-
BHD
2 stops23h 00m
Multiple Airlines
Sun 27/1212:10
BHD
-
PDX
2 stops32h 12m
Multiple Airlines
Deal found 20/7£1,074

Find flight deals from Washington to Belfast City

Keep the following information in mind while searching for Washington to Belfast City flight deals. Data was last updated 22 July 2026.

Round-trip from

£684

One-way from

£172
British Airways
  • British Airways
  • 17/1-21/1
  • 2 total stops
  • 27h 50m total
  • Washington to Belfast
Search Deals
17/11
  • 17/11
  • 3 total stops
  • 23h 57m total
  • Washington to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington to Belfast City 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 22 July 2026.
Use the filters below to find and compare flights from Washington to Belfast City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 17/1

18:45-16:50

1 stop14h 05m

Belfast City

Thu 21/1

11:05-16:50

1 stop13h 45m

£684

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 10/1

18:45-18:40

1 stop15h 55m

Belfast City

Thu 14/1

09:05-16:50

1 stop15h 45m

£684

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 5/10

20:20-19:25

1 stop15h 05m

Belfast City

Thu 22/10

12:45-18:25

1 stop13h 40m

£706

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 2/9

13:30-13:35

1 stop16h 05m

Belfast City

Wed 9/9

19:40-11:35

1 stop23h 55m

£723

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 1/9

20:20-18:55

1 stop14h 35m

Belfast City

Sun 6/9

20:10-11:35

1 stop23h 25m

£794

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 1/9

07:15-09:20

2 stops18h 05m

Belfast City

Mon 7/9

17:30-11:47

1 stop26h 17m

£811

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-10:30

2 stops18h 30m

Belfast City

Sun 27/12

17:35-15:50

1 stop30h 15m

£911

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 18/12

08:00-15:00

2 stops23h 00m

Belfast City

Sun 27/12

06:30-15:50

1 stop17h 20m

£1,090
Cheapest one-way

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 17/11

08:18-16:15

3 stops23h 57m

£172

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 23/10

19:30-18:10

1 stop14h 40m

£282

Flights are sorted by cheapest return flights first.

Deals found on 21/7

Showing 1-10 of 17 resultsSorted by cheapest first
1
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Best time to book a flight from Washington to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City from Washington 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 Washington to Belfast City Airport

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington to Belfast City. 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 State of Washington to Belfast City Airport?

    British Airways can get you from State of Washington to Belfast City Airport in just under 14h 05m. Your travel time can differ by up to . The distance from State of Washington to Belfast City Airport is about 4472 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Belfast City 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

Travelling to a place near Belfast City Airport?

Book flights to Belfast City Airport if you plan to visit one of these locations
Carrickfergus
Bangor
Newcastle

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Washington to Belfast City for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Belfast City from Washington shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Washington to Belfast City flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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