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Cheap flights from Washington to Belfast from $395

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Belfast departing on 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Logo
7:00 pm - 8:25 pmSEA-BHD
17h 25m2 stops
Logo
7:25 am - 6:00 pmBHD-SEA
17h 35m2 stops
$637
Find Deal
Sun, Oct 19 - Thu, Oct 30
British Airways Logo
6:45 pm - 4:35 pmPDX-BHD
14h 50m1 stop
British Airways Logo
8:00 pm - 3:55 pmBHD-PDX
27h 55m1 stop
$651British Airways
Find Deal
Wed, Oct 29 - Thu, Nov 6
British Airways Logo
10:29 am - 2:15 pmPDX-BHD
20h 46m2 stops
British Airways Logo
8:00 pm - 3:55 pmBHD-PDX
27h 55m1 stop
$656British Airways
Find Deal
Wed, Oct 29 - Thu, Nov 6
British Airways Logo
10:29 am - 2:15 pmPDX-BHD
20h 46m2 stops
British Airways Logo
6:35 am - 9:20 pmBHD-PDX
22h 45m2 stops
$668British Airways
Find Deal
Wed, Oct 29 - Thu, Nov 6
Logo
7:00 pm - 8:25 pmSEA-BHD
17h 25m2 stops
Logo
7:00 am - 8:40 pmBHD-SEA
21h 40m2 stops
$689
Find Deal
Sat, Oct 4 - Sat, Oct 11
British Airways Logo
8:20 pm - 5:40 pmSEA-BHD
13h 20m1 stop
British Airways Logo
9:05 am - 5:55 pmBHD-SEA
15h 50m1 stop
$720British Airways
Find Deal
Sun, Oct 19 - Thu, Oct 30
American Airlines Logo
1:23 am - 10:15 amSEA-BHD
24h 52m2 stops
American Airlines Logo
6:30 am - 6:20 pmBHD-SEA
19h 50m2 stops
$982American Airlines
Find Deal
Tue, Dec 2 - Sun, Dec 7
American Airlines Logo
1:23 am - 10:15 amSEA-BHD
24h 52m2 stops
American Airlines Logo
9:10 am - 6:20 pmBHD-SEA
17h 10m2 stops
$983American Airlines
Find Deal
Tue, Dec 2 - Sun, Dec 7
KLM Logo
11:15 am - 4:50 pmSEA-BHD
21h 35m2 stops
KLM Logo
6:30 am - 11:50 amBHD-SEA
13h 20m1 stop
$993KLM
Find Deal
Wed, Dec 3 - Sun, Dec 7
KLM Logo
11:15 am - 4:50 pmSEA-BHD
21h 35m2 stops
KLM Logo
6:30 am - 11:50 amBHD-SEA
13h 20m1 stop
$994KLM
Find Deal
Wed, Dec 3 - Sun, Dec 7

British Airways flights from State of Washington to Belfast City Airport

Our best British Airways deals on State of Washington to Belfast City Airport flight tickets
British Airways
Oct 29
PDX6:45 pmPortland
14h 50m
1 stop
BHD4:35 pmBelfast City
Nov 6
BHD8:00 pmBelfast City
27h 55m
1 stop
PDX3:55 pmPortland
$651
Find similar
British Airways
Oct 29
PDX10:29 amPortland
20h 46m
2 stops
BHD2:15 pmBelfast City
Nov 6
BHD8:00 pmBelfast City
27h 55m
1 stop
PDX3:55 pmPortland
$656
Find similar
British Airways
Oct 29
PDX10:29 amPortland
20h 46m
2 stops
BHD2:15 pmBelfast City
Nov 6
BHD6:35 amBelfast City
22h 45m
2 stops
PDX9:20 pmPortland
$668
Find similar

American Airlines flights from State of Washington to Belfast City Airport

Our best American Airlines deals on State of Washington to Belfast City Airport flight tickets
American Airlines
Dec 2
SEA1:23 amSeattle/Tacoma Intl
24h 52m
2 stops
BHD10:15 amBelfast City
Dec 7
BHD6:30 amBelfast City
19h 50m
2 stops
SEA6:20 pmSeattle/Tacoma Intl
$982
Find similar
American Airlines
Dec 2
SEA1:23 amSeattle/Tacoma Intl
24h 52m
2 stops
BHD10:15 amBelfast City
Dec 7
BHD9:10 amBelfast City
17h 10m
2 stops
SEA6:20 pmSeattle/Tacoma Intl
$983
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Belfast City Airport 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, momondo users made 832,500 searches. Data last updated August 7, 2025.
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

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 10/19

7:00 pm-8:25 pm

2 stops17h 25m

Belfast City

Thu 10/30

7:25 am-6:00 pm

2 stops17h 35m

$637

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 10/29

6:45 pm-4:35 pm

1 stop14h 50m

Belfast City

Thu 11/6

8:00 pm-3:55 pm

1 stop27h 55m

$651

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 10/29

10:29 am-2:15 pm

2 stops20h 46m

Belfast City

Thu 11/6

8:00 pm-3:55 pm

1 stop27h 55m

$656

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 10/29

10:29 am-2:15 pm

2 stops20h 46m

Belfast City

Thu 11/6

6:35 am-9:20 pm

2 stops22h 45m

$668

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 10/4

7:00 pm-8:25 pm

2 stops17h 25m

Belfast City

Sat 10/11

7:00 am-8:40 pm

2 stops21h 40m

$689

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 10/19

8:20 pm-5:40 pm

1 stop13h 20m

Belfast City

Thu 10/30

9:05 am-5:55 pm

1 stop15h 50m

$720

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 12/2

1:23 am-10:15 am

2 stops24h 52m

Belfast City

Sun 12/7

6:30 am-6:20 pm

2 stops19h 50m

$982

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 12/2

1:23 am-10:15 am

2 stops24h 52m

Belfast City

Sun 12/7

9:10 am-6:20 pm

2 stops17h 10m

$983

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 12/3

11:15 am-4:50 pm

2 stops21h 35m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$993

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 12/3

11:15 am-4:50 pm

2 stops21h 35m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$994

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from State of Washington to Belfast City Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Belfast City Airport?

On average, the least expensive day to fly to Belfast City Airport from State of Washington is on a Thursday. momondo users have found tickets for Thursday departures for as low as $782. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $794.

What is the cheapest time of day to depart on your flight to Belfast City Airport?

According to our data, the cheapest time of day to fly to Belfast City Airport is in the evening. momondo users have found flights departing from State of Washington to Belfast City Airport in the evening for as low as $772. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $782.

Cheap State of Washington to Belfast City Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Belfast City Airport

Best Price Found

$395

Fastest flight time

12h 55m

Direct flights

None
The best one-way flight to Belfast City Airport from State of Washington in the past 72 hours is $395. The best round-trip flight deal from State of Washington to Belfast City Airport found on momondo in the last 72 hours is $637.
The fastest flight from State of Washington to Belfast City Airport takes 12h 55m
There are no direct flights from State of Washington to Belfast City Airport. Popular non-direct routes for this connection are Portland Airport - Belfast City Airport and Seattle/Tacoma Intl Airport - Belfast City Airport.
Search flight deals

  • When did momondo last update prices for flights from Washington to Belfast City Airport?

    Prices for flights from Washington to Belfast City Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Belfast City Airport?

  • How old do you have to be to fly from Washington to Belfast City Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Belfast City Airport.

  • What documentation or ID do you need to fly to Belfast City Airport?

    The necessary travel and health documents for your Belfast City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Belfast?

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

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Belfast?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from Washington.

Can I find flights from Washington to Belfast with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Belfast flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Belfast?

momondo provides multiple filters to help you find the best flight to Belfast from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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