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Cheap flights from Washington to Belfast from $600

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Belfast departing on 3/7. 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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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
1:35 pm - 11:10 am
SEA
-
BHD
13h 35m1 stop
British Airways Logo
10:00 am - 5:55 pm
BHD
-
SEA
14h 55m1 stop
$600British Airways
Sat, Mar 7 - Tue, Mar 17
British Airways Logo
5:45 pm - 2:15 pm
PDX
-
BHD
12h 30m1 stop
British Airways Logo
6:35 am - 4:55 pm
BHD
-
PDX
17h 20m1 stop
$600British Airways
Mon, Mar 2 - Mon, Mar 16
British Airways Logo
6:50 pm - 7:40 pm
SEA
-
BHD
16h 50m1 stop
British Airways Logo
6:35 am - 5:55 pm
BHD
-
SEA
18h 20m1 stop
$604British Airways
Sat, Mar 7 - Wed, Mar 18
British Airways Logo
5:45 pm - 8:15 am
PDX
-
BHD
30h 30m1 stop
British Airways Logo
9:10 am - 3:55 pm
BHD
-
PDX
14h 45m1 stop
$609British Airways
Fri, Jan 16 - Sun, Jan 25
British Airways Logo
7:15 am - 2:15 pm
SEA
-
BHD
23h 00m2 stops
British Airways Logo
6:35 am - 12:30 pm
BHD
-
SEA
12h 55m1 stop
$619British Airways
Sat, Mar 7 - Tue, Mar 17
British Airways Logo
7:15 am - 2:15 pm
SEA
-
BHD
23h 00m2 stops
British Airways Logo
7:25 pm - 5:55 pm
BHD
-
SEA
29h 30m1 stop
$620British Airways
Sat, Mar 7 - Wed, Mar 18
British Airways Logo
7:15 am - 2:15 pm
SEA
-
BHD
23h 00m2 stops
British Airways Logo
10:00 am - 10:13 pm
BHD
-
SEA
19h 13m2 stops
$622British Airways
Sat, Mar 7 - Tue, Mar 17
British Airways Logo
7:15 am - 2:15 pm
SEA
-
BHD
23h 00m2 stops
British Airways Logo
6:35 am - 9:54 pm
BHD
-
SEA
22h 19m2 stops
$623British Airways
Sat, Mar 7 - Wed, Mar 18
Virgin Atlantic Logo
1:25 pm - 4:50 pm
PDX
-
BHD
19h 25m1 stop
Virgin Atlantic Logo
5:20 pm - 10:15 pm
BHD
-
PDX
36h 55m2 stops
$708Virgin Atlantic
Fri, Jan 16 - Sun, Jan 25
Delta Logo
5:50 am - 4:50 pm
PDX
-
BHD
27h 00m2 stops
Delta Logo
5:20 pm - 6:50 pm
BHD
-
PDX
33h 30m2 stops
$714Delta
Fri, Jan 16 - Sun, Jan 25

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
Mar 7
SEA1:35 pmSeattle/Tacoma Intl
13h 35m
1 stop
BHD11:10 amBelfast City
Mar 17
BHD10:00 amBelfast City
14h 55m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$600
Find similar
British Airways
Jan 14
PDX5:45 pmPortland
12h 30m
1 stop
BHD2:15 pmBelfast City
Jan 21
BHD6:35 amBelfast City
17h 20m
1 stop
PDX3:55 pmPortland
$604
Find similar
British Airways
Jan 16
PDX5:45 pmPortland
17h 30m
1 stop
BHD7:15 pmBelfast City
Jan 25
BHD9:10 amBelfast City
14h 45m
1 stop
PDX3:55 pmPortland
$609
Find similar

Delta flights from State of Washington to Belfast City Airport

Our best Delta deals on State of Washington to Belfast City Airport flight tickets
Delta
Jan 16
PDX5:50 amPortland
27h 00m
2 stops
BHD4:50 pmBelfast City
Jan 25
BHD5:20 pmBelfast City
33h 30m
2 stops
PDX6:50 pmPortland
$714
Find similar
Delta
Dec 16
PDX11:54 amPortland
25h 06m
2 stops
BHD9:00 pmBelfast City
Dec 19
BHD6:30 amBelfast City
12h 55m
1 stop
PDX11:25 amPortland
$2,050
Find similar
Delta
Dec 16
PDX11:54 amPortland
25h 06m
2 stops
BHD9:00 pmBelfast City
Dec 20
BHD5:20 pmBelfast City
33h 33m
2 stops
PDX6:53 pmPortland
$2,110
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 December 15, 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

Sat 3/7

1:35 pm-11:10 am

1 stop13h 35m

Belfast City

Tue 3/17

10:00 am-5:55 pm

1 stop14h 55m

$600

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 3/2

5:45 pm-2:15 pm

1 stop12h 30m

Belfast City

Mon 3/16

6:35 am-4:55 pm

1 stop17h 20m

$600

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

6:50 pm-7:40 pm

1 stop16h 50m

Belfast City

Wed 3/18

6:35 am-5:55 pm

1 stop18h 20m

$604

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 1/16

5:45 pm-8:15 am

1 stop30h 30m

Belfast City

Sun 1/25

9:10 am-3:55 pm

1 stop14h 45m

$609

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Tue 3/17

6:35 am-12:30 pm

1 stop12h 55m

$619

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Wed 3/18

7:25 pm-5:55 pm

1 stop29h 30m

$620

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Tue 3/17

10:00 am-10:13 pm

2 stops19h 13m

$622

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-2:15 pm

2 stops23h 00m

Belfast City

Wed 3/18

6:35 am-9:54 pm

2 stops22h 19m

$623

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 1/16

1:25 pm-4:50 pm

1 stop19h 25m

Belfast City

Sun 1/25

5:20 pm-10:15 pm

2 stops36h 55m

$708

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 1/16

5:50 am-4:50 pm

2 stops27h 00m

Belfast City

Sun 1/25

5:20 pm-6:50 pm

2 stops33h 30m

$714

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Fastest flight time

12h 30m

Direct flights

None
The fastest flight from State of Washington to Belfast City Airport takes 12h 30m
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 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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