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Cheap flights from Washington to Belfast from $294

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 4/16. 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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0 bags

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Find the cheapest flights from Washington to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
8:20 pm - 8:35 pm
SEA
-
BHD
16h 15m
1 stop
British Airways Logo
7:40 pm - 11:35 am
BHD
-
SEA
23h 55m
1 stop
$840British Airways
Wed, Sep 2 - Wed, Sep 9
British Airways Logo
8:20 pm - 5:30 pm
SEA
-
BHD
13h 10m
1 stop
British Airways Logo
7:35 pm - 11:35 am
BHD
-
SEA
24h 00m
1 stop
$868British Airways
Mon, Sep 14 - Mon, Sep 21
British Airways Logo
6:24 am - 12:55 pm
SEA
-
BHD
22h 31m
2 stops
British Airways Logo
7:35 pm - 11:35 am
BHD
-
SEA
24h 00m
1 stop
$875British Airways
Mon, Sep 14 - Mon, Sep 21
British Airways Logo
8:20 pm - 8:35 pm
SEA
-
BHD
16h 15m
1 stop
British Airways Logo
7:40 pm - 6:49 pm
BHD
-
SEA
31h 09m
2 stops
$882British Airways
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
1:32 pm - 1:35 pm
SEA
-
BHD
16h 03m
2 stops
American Airlines Logo
6:30 am - 5:29 pm
BHD
-
SEA
18h 59m
2 stops
$943American Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
10:23 am - 10:10 am
PDX
-
BHD
15h 47m
2 stops
Multiple Airlines Logo
9:35 am - 10:50 pm
BHD
-
PDX
21h 15m
2 stops
$949Multiple Airlines
Thu, Sep 3 - Thu, Sep 10
Virgin Atlantic Logo
1:05 pm - 9:20 am
PDX
-
BHD
12h 15m
1 stop
Virgin Atlantic Logo
5:30 pm - 11:10 am
BHD
-
PDX
25h 40m
1 stop
$955Virgin Atlantic
Wed, Sep 2 - Sun, Sep 13
KLM Logo
1:05 pm - 9:20 am
PDX
-
BHD
12h 15m
1 stop
KLM Logo
5:30 pm - 3:06 pm
BHD
-
PDX
29h 36m
2 stops
$964KLM
Wed, Sep 2 - Sun, Sep 13
American Airlines Logo
7:30 pm - 7:20 pm
PDX
-
BHD
15h 50m
1 stop
American Airlines Logo
9:35 am - 11:57 pm
BHD
-
PDX
22h 22m
2 stops
$975American Airlines
Sat, Apr 18 - Sat, Apr 25
Multiple Airlines Logo
7:30 pm - 7:20 pm
PDX
-
BHD
15h 50m
1 stop
Multiple Airlines Logo
7:05 am - 9:38 pm
BHD
-
PDX
22h 33m
2 stops
$985Multiple Airlines
Sat, Apr 18 - Sat, Apr 25

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
Sep 2
SEA1:32 pmSeattle/Tacoma Intl
16h 03m
2 stops
BHD1:35 pmBelfast City
Sep 9
BHD6:30 amBelfast City
18h 59m
2 stops
SEA5:29 pmSeattle/Tacoma Intl
$943
American Airlines
Mar 30
PDX11:46 amPortland
19h 44m
2 stops
BHD3:30 pmBelfast City
Apr 30
BHD9:35 amBelfast City
21h 21m
2 stops
PDX10:56 pmPortland
$972
American Airlines
Apr 18
PDX7:30 pmPortland
15h 50m
1 stop
BHD7:20 pmBelfast City
Apr 25
BHD9:35 amBelfast City
22h 22m
2 stops
PDX11:57 pmPortland
$975

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
Sep 2
SEA8:20 pmSeattle/Tacoma Intl
16h 15m
1 stop
BHD8:35 pmBelfast City
Sep 9
BHD7:40 pmBelfast City
23h 55m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$840
British Airways
Sep 14
SEA8:20 pmSeattle/Tacoma Intl
13h 10m
1 stop
BHD5:30 pmBelfast City
Sep 21
BHD7:35 pmBelfast City
24h 00m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$868
British Airways
Sep 14
SEA6:24 amSeattle/Tacoma Intl
22h 31m
2 stops
BHD12:55 pmBelfast City
Sep 21
BHD7:35 pmBelfast City
24h 00m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$875

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 March 24, 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 round-trip

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 9/2

8:20 pm-8:35 pm

1 stop16h 15m

Belfast City

Wed 9/9

7:40 pm-11:35 am

1 stop23h 55m

$840

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 9/14

8:20 pm-5:30 pm

1 stop13h 10m

Belfast City

Mon 9/21

7:35 pm-11:35 am

1 stop24h 00m

$868

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 9/14

6:24 am-12:55 pm

2 stops22h 31m

Belfast City

Mon 9/21

7:35 pm-11:35 am

1 stop24h 00m

$875

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 9/2

8:20 pm-8:35 pm

1 stop16h 15m

Belfast City

Wed 9/9

7:40 pm-6:49 pm

2 stops31h 09m

$882
Quickest round-trip

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 9/2

1:32 pm-1:35 pm

2 stops16h 03m

Belfast City

Wed 9/9

6:30 am-5:29 pm

2 stops18h 59m

$943

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 9/3

10:23 am-10:10 am

2 stops15h 47m

Belfast City

Thu 9/10

9:35 am-10:50 pm

2 stops21h 15m

$949

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 9/2

1:05 pm-9:20 am

1 stop12h 15m

Belfast City

Sun 9/13

5:30 pm-11:10 am

1 stop25h 40m

$955

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 9/2

1:05 pm-9:20 am

1 stop12h 15m

Belfast City

Sun 9/13

5:30 pm-3:06 pm

2 stops29h 36m

$964

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 4/18

7:30 pm-7:20 pm

1 stop15h 50m

Belfast City

Sat 4/25

9:35 am-11:57 pm

2 stops22h 22m

$975

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 4/18

7:30 pm-7:20 pm

1 stop15h 50m

Belfast City

Sat 4/25

7:05 am-9:38 pm

2 stops22h 33m

$985

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 airline that flies from Washington to Belfast City?

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from Washington to Belfast City

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

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from State of Washington to Belfast City Airport takes 12h 15m
There are no direct flights from State of Washington to Belfast City Airport. There are no popular flight routes from State of Washington to 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 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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