Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Washington to Belfast from $393

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 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
6:50 pm - 7:30 amSEA-BHD
28h 40m1 stop
British Airways Logo
9:10 am - 4:55 pmBHD-SEA
15h 45m1 stop
$676British Airways
Find Deal
Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
7:20 am - 4:50 pmSEA-BHD
25h 30m2 stops
Virgin Atlantic Logo
6:30 am - 11:50 amBHD-SEA
13h 20m1 stop
$691Virgin Atlantic
Find Deal
Wed, Dec 3 - Sun, Dec 7
KLM Logo
3:00 pm - 9:00 pmSEA-BHD
22h 00m1 stop
KLM Logo
5:20 pm - 11:45 amBHD-SEA
26h 25m1 stop
$786KLM
Find Deal
Sun, Nov 9 - Sat, Nov 15
Multiple Airlines Logo
1:35 pm - 2:15 pmSEA-BHD
16h 40m1 stop
Multiple Airlines Logo
11:25 am - 12:49 amBHD-SEA
20h 24m2 stops
$789Multiple Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 17
Delta Logo
5:05 pm - 9:20 pmPDX-BHD
20h 15m2 stops
Delta Logo
5:25 pm - 11:20 amBHD-PDX
25h 55m1 stop
$801Delta
Find Deal
Fri, Apr 3 - Tue, Apr 7
Delta Logo
1:25 pm - 9:20 pmPDX-BHD
23h 55m2 stops
Delta Logo
5:25 pm - 8:30 pmBHD-PDX
35h 05m2 stops
$864Delta
Find Deal
Fri, Apr 3 - Tue, Apr 7
American Airlines Logo
2:35 pm - 2:15 pmSEA-BHD
16h 40m1 stop
American Airlines Logo
6:35 am - 11:08 pmBHD-SEA
24h 33m2 stops
$984American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
7:51 am - 5:15 pmSEA-BHD
26h 24m2 stops
American Airlines Logo
6:35 am - 11:08 pmBHD-SEA
24h 33m2 stops
$1,008American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
Multiple Airlines Logo
10:11 pm - 7:30 amPDX-BHD
49h 19m2 stops
Multiple Airlines Logo
8:00 pm - 5:59 pmBHD-PDX
29h 59m2 stops
$1,011Multiple Airlines
Find Deal
Tue, Dec 23 - Thu, Jan 8
KLM Logo
4:00 pm - 9:00 pmSEA-BHD
22h 00m1 stop
KLM Logo
5:20 pm - 11:45 amBHD-SEA
26h 25m1 stop
$1,341KLM
Find Deal
Sat, Nov 1 - Sat, Nov 8

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
Dec 3
SEA6:50 pmSeattle/Tacoma Intl
28h 40m
1 stop
BHD7:30 amBelfast City
Dec 7
BHD9:10 amBelfast City
15h 45m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$676
Find similar
British Airways
Nov 9
SEA6:50 pmSeattle/Tacoma Intl
28h 50m
1 stop
BHD7:40 amBelfast City
Nov 15
BHD6:00 pmBelfast City
48h 25m
2 stops
SEA10:25 amSeattle/Tacoma Intl
$715
Find similar
British Airways
Mar 7
SEA6:50 pmSeattle/Tacoma Intl
16h 50m
1 stop
BHD7:40 pmBelfast City
Mar 17
BHD6:35 amBelfast City
18h 20m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$763
Find similar

Virgin Atlantic flights from State of Washington to Belfast City Airport

Our best Virgin Atlantic deals on State of Washington to Belfast City Airport flight tickets
Virgin Atlantic
Dec 3
SEA7:20 amSeattle/Tacoma Intl
25h 30m
2 stops
BHD4:50 pmBelfast City
Dec 7
BHD6:30 amBelfast City
13h 20m
1 stop
SEA11:50 amSeattle/Tacoma Intl
$691
Find similar
Virgin Atlantic
Dec 3
SEA7:20 amSeattle/Tacoma Intl
25h 30m
2 stops
BHD4:50 pmBelfast City
Dec 7
BHD6:30 amBelfast City
17h 05m
2 stops
SEA3:35 pmSeattle/Tacoma Intl
$701
Find similar
Virgin Atlantic
Mar 1
PDX11:10 amPortland
21h 40m
2 stops
BHD4:50 pmBelfast City
Mar 5
BHD5:20 pmBelfast City
26h 05m
1 stop
PDX11:25 amPortland
$811
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 October 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

Wed 12/3

6:50 pm-7:30 am

1 stop28h 40m

Belfast City

Sun 12/7

9:10 am-4:55 pm

1 stop15h 45m

$676

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 12/3

7:20 am-4:50 pm

2 stops25h 30m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$691

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 11/9

3:00 pm-9:00 pm

1 stop22h 00m

Belfast City

Sat 11/15

5:20 pm-11:45 am

1 stop26h 25m

$786

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

1:35 pm-2:15 pm

1 stop16h 40m

Belfast City

Tue 3/17

11:25 am-12:49 am

2 stops20h 24m

$789

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 4/3

5:05 pm-9:20 pm

2 stops20h 15m

Belfast City

Tue 4/7

5:25 pm-11:20 am

1 stop25h 55m

$801

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 4/3

1:25 pm-9:20 pm

2 stops23h 55m

Belfast City

Tue 4/7

5:25 pm-8:30 pm

2 stops35h 05m

$864

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 3/27

2:35 pm-2:15 pm

1 stop16h 40m

Belfast City

Tue 3/31

6:35 am-11:08 pm

2 stops24h 33m

$984

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 3/27

7:51 am-5:15 pm

2 stops26h 24m

Belfast City

Tue 3/31

6:35 am-11:08 pm

2 stops24h 33m

$1,008

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Tue 12/23

10:11 pm-7:30 am

2 stops49h 19m

Belfast City

Thu 1/8

8:00 pm-5:59 pm

2 stops29h 59m

$1,011

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 11/1

4:00 pm-9:00 pm

1 stop22h 00m

Belfast City

Sat 11/8

5:20 pm-11:45 am

1 stop26h 25m

$1,341

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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

Direct flights

None
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.

An easier way to manage your Belfast City Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 11/6
Thu 11/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Belfast

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $342
Flights to London Gatwick Airportfrom $316
Flights to London City Airportfrom $452
Flights to London Stansted Airportfrom $368
Flights to London Luton Airportfrom $365
Flights to Glasgow Intl Airportfrom $321
Flights to Belfast Intl Airportfrom $470
Flights to London Southend Airportfrom $424