Find flights
When to book
FAQs

Cheap flights from Washington to Belfast City Airport from £266

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BHD
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 7 November 2025.

Wed 3/1215:05SEA - BHD
1 stop21h 55mDelta
Sun 7/1206:30BHD - SEA
1 stop13h 20mDelta
Deal found 5/11£483
Wed 3/1211:35PDX - BHD
2 stops25h 25mDelta
Wed 10/1206:30BHD - PDX
1 stop12h 55mDelta
Deal found 5/11£486
Thu 4/1210:05PDX - BHD
2 stops22h 45mKLM
Mon 15/1206:30BHD - PDX
1 stop12h 55mKLM
Deal found 4/11£487
Wed 3/1215:05SEA - BHD
1 stop17h 45mVirgin Atlantic
Sun 7/1217:20BHD - SEA
2 stops34h 53mVirgin Atlantic
Deal found 4/11£490
Wed 3/1218:50SEA - BHD
1 stop28h 40mBritish Airways
Sun 7/1220:25BHD - SEA
1 stop28h 30mBritish Airways
Deal found 6/11£626
Wed 3/1217:45PDX - BHD
1 stop29h 45mBritish Airways
Wed 10/1206:35BHD - PDX
1 stop17h 20mBritish Airways
Deal found 5/11£665
Thu 4/1209:50PDX - BHD
3 stops27h 05mMultiple Airlines
Mon 15/1208:00BHD - PDX
2 stops17h 00mMultiple Airlines
Deal found 4/11£1,165

Cheap 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 7 November 2025.

Round-trip from

£482

One-way from

£266

Popular in

December

Cheapest in

March

Average price

£616
British Airways
  • British Airways
  • 19/1-29/1
  • 3 total stops
  • 37h 17m total
  • Washington to Belfast
Search Deals
3/2
  • 3/2
  • 3 total stops
  • 41h 48m total
  • Washington to Belfast
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 7 November 2025.
Use the filters below to find and compare flights from Washington to Belfast City Airport that are best for you.

Fly from

Washington

Fly to

Belfast City

Route

Depart

Return

Price

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

15:05-16:50

1 stop17h 45m

Belfast City

Sun 7/12

17:20-11:50

1 stop26h 30m

£483

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

15:05-21:00

1 stop21h 55m

Belfast City

Sun 7/12

06:30-11:50

1 stop13h 20m

£483

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 19/1

12:35-16:05

2 stops19h 30m

Belfast City

Thu 29/1

06:35-20:22

2 stops21h 47m

£484

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 3/12

11:35-21:00

2 stops25h 25m

Belfast City

Wed 10/12

06:30-11:25

1 stop12h 55m

£486

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 4/12

10:05-16:50

2 stops22h 45m

Belfast City

Mon 15/12

06:30-11:25

1 stop12h 55m

£487

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 3/4

19:30-18:15

1 stop14h 45m

Belfast City

Tue 7/4

09:35-17:40

1 stop16h 05m

£565

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 1/1

07:14-10:20

2 stops19h 06m

Belfast City

Wed 18/2

09:15-15:55

1 stop14h 40m

£572

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 3/4

06:04-21:20

2 stops31h 16m

Belfast City

Tue 7/4

06:30-11:20

1 stop12h 50m

£584

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 27/3

14:35-14:15

1 stop16h 40m

Belfast City

Tue 31/3

09:35-11:35

1 stop34h 00m

£589

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/3

13:35-14:15

1 stop16h 40m

Belfast City

Tue 17/3

06:35-12:30

1 stop12h 55m

£590

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 22 results
1
2
3

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?

    Virgin Atlantic, Delta, and American Airlines can get you from State of Washington to Belfast City Airport in just under 17h 45m. Your travel time can differ by up to 4h 10m. The distance from State of Washington to Belfast City Airport is about 4472 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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
Bangor
Newcastle
Carrickfergus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Belfast City

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Belfast Intl flights
Newark to Belfast Intl flights
John F Kennedy Intl to Belfast City flights
Minneapolis to Belfast Intl flights
Boston to Belfast Intl flights
Los Angeles to Belfast Intl flights
Orlando to Belfast Intl flights
Boston to Belfast City flights
Seattle to Belfast City flights
Los Angeles to Belfast City flights
Dallas/Fort Worth to Belfast Intl flights
Atlanta to Belfast Intl flights
Minneapolis to Belfast City flights
Denver to Belfast Intl flights
Portland to Belfast Intl flights
Portland to Belfast City flights
Hobby to Belfast City flights
Austin to Belfast Intl flights
Orlando to Belfast City flights
Miami to Belfast Intl flights
Denver to Belfast City flights
Miami to Belfast City flights
San Francisco to Belfast Intl flights
State College to Belfast Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Washington to Belfast City via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.