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Cheap flights from Washington to Belfast City Airport from £302

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BHD
16 Jul — 23 Jul1
1 adult

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 11 July 2025.

Round-trip from

£513

One-way from

£302

Popular in

August

Cheapest in

March

Average price

£843
British Airways
  • British Airways
  • 23/8-31/8
  • 4 total stops
  • 47h 34m total
  • Washington to Belfast
Search Deals
British Airways
  • British Airways
  • 23/8
  • 2 total stops
  • 15h 47m total
  • Washington to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£123 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Washington to Belfast City

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 11 July 2025.

Sat 23/823:59PDX - BHD
2 stops27h 31mBritish Airways
Sun 31/806:50BHD - PDX
2 stops20h 03mBritish Airways
Deal found 9/7£513
Wed 3/915:45SEA - BHD
2 stops20h 50mMultiple Airlines
Wed 10/907:05BHD - SEA
2 stops21h 35mMultiple Airlines
Deal found 9/7£540
Wed 5/1107:46SEA - BHD
2 stops18h 29mBritish Airways
Thu 20/1106:35BHD - SEA
2 stops24h 40mBritish Airways
Deal found 9/7£559
Thu 6/1113:41SEA - BHD
2 stops18h 59mAmerican Airlines
Thu 20/1109:00BHD - SEA
2 stops22h 15mAmerican Airlines
Deal found 9/7£585
Wed 3/911:25SEA - BHD
2 stops21h 30mDelta
Wed 10/906:30BHD - SEA
1 stop17h 35mDelta
Deal found 9/7£626
Wed 3/917:40SEA - BHD
1 stop15h 15mKLM
Wed 10/917:25BHD - SEA
1 stop30h 40mKLM
Deal found 9/7£650
Sat 13/913:45PDX - BHD
2 stops19h 10mKLM
Sun 28/917:25BHD - PDX
1 stop25h 55mKLM
Deal found 10/7£717
Sat 23/813:15PDX - BHD
1 stop19h 40mMultiple Airlines
Sun 31/806:30BHD - PDX
1 stop12h 30mMultiple Airlines
Deal found 10/7£720

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 11 July 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

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 23/8

23:59-11:30

2 stops27h 31m

Belfast City

Sun 31/8

06:50-18:53

2 stops20h 03m

£513

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/9

15:45-20:35

2 stops20h 50m

Belfast City

Wed 10/9

07:05-20:40

2 stops21h 35m

£540

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 5/11

07:46-10:15

2 stops18h 29m

Belfast City

Thu 20/11

06:35-23:15

2 stops24h 40m

£559

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 6/11

13:41-16:40

2 stops18h 59m

Belfast City

Thu 20/11

09:00-23:15

2 stops22h 15m

£585

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/9

11:25-16:55

2 stops21h 30m

Belfast City

Wed 10/9

06:30-16:05

1 stop17h 35m

£626

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/9

17:40-16:55

1 stop15h 15m

Belfast City

Wed 10/9

17:25-16:05

1 stop30h 40m

£650

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 13/9

13:45-16:55

2 stops19h 10m

Belfast City

Sun 28/9

17:25-11:20

1 stop25h 55m

£717

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 23/8

13:15-16:55

1 stop19h 40m

Belfast City

Sun 31/8

06:30-11:00

1 stop12h 30m

£720

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 23/8

10:23-10:10

2 stops15h 47m

£302

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 23/8

13:15-16:55

1 stop19h 40m

£341

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 13 results
1
2

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.

Reviews of airlines servicing Belfast City

Get insights into the airlines that provide service to Belfast City. 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 Belfast City. Reviews last updated 11 July 2025.
Read through reviews of airlines operating flights from Washington to Belfast City Airport, such as Delta, KLM, andFinnair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,312 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,467 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from State of Washington to Belfast City Airport one-way?

    The cheapet airlines for a one-way flight from State of Washington to Belfast City Airport are British Airways (£302), Air France (£341), and Finnair (£734).

  • 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.

  • What is the cheapest month to book a flight from State of Washington to Belfast City Airport?

    Currently, April is the cheapest month in which you can book a flight from State of Washington to Belfast City Airport (average of £98). Flying from State of Washington to Belfast City Airport in December is currently the most expensive (average of £116). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Washington?

Book flights to Washington if you plan to visit one of these locations
Newcastle
Bangor
Carrickfergus

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Alternative routes for Washington to Belfast City

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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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