What is the cheapest airline that flies from Belfast City to Washington?

British Airways is the most popular carrier operating from Belfast City to Washington

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

Prices for flights from Belfast City Airport to Washington are updated daily.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast City Airport to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$674 Cheap Flights from Belfast City Airport to State of Washington in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Belfast City Airport to Washington

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 pm - 11:35 am

BHD

SEA

25h 05m

1 stop

12:57 pm - 3:30 pm

SEA

BHD

18h 33m

2 stops

$1,993Multiple Airlines

Mon, Aug 31 - Thu, Sep 10

6:30 pm - 6:49 pm

BHD

SEA

32h 19m

2 stops

12:57 pm - 3:30 pm

SEA

BHD

18h 33m

2 stops

$2,086Multiple Airlines

Mon, Aug 31 - Thu, Sep 10

6:30 pm - 11:35 am

BHD

SEA

25h 05m

1 stop

8:20 pm - 7:25 pm

SEA

BHD

15h 05m

1 stop

$2,506Multiple Airlines

Mon, Aug 31 - Thu, Sep 10

11:35 am - 8:38 pm

BHD

SEA

17h 03m

2 stops

1:24 pm - 3:30 pm

SEA

BHD

18h 06m

2 stops

$5,253British Airways

Mon, Aug 31 - Thu, Sep 10

6:30 am - 11:35 am

BHD

SEA

13h 05m

1 stop

8:20 pm - 8:35 pm

SEA

BHD

16h 15m

1 stop

$5,352British Airways

Mon, Aug 31 - Thu, Sep 10

British Airways flights from Belfast City Airport to State of Washington

Our best British Airways deals on Belfast City Airport to State of Washington flight tickets

British Airways

Aug 31

BHD11:35 amBelfast City

17h 03m

2 stops

SEA8:38 pmSeattle/Tacoma Intl

Sep 10

SEA1:24 pmSeattle/Tacoma Intl

18h 06m

2 stops

BHD3:30 pmBelfast City

$5,253

British Airways

Aug 31

BHD6:30 amBelfast City

13h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Sep 10

SEA8:20 pmSeattle/Tacoma Intl

16h 15m

1 stop

BHD8:35 pmBelfast City

$5,352

momondo Fare Finder

Use the filters below to find and compare flights from Belfast City Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

6:30 pm-11:35 am

1 stop25h 05m

Seattle/Tacoma Intl

Thu 9/10

12:57 pm-3:30 pm

2 stops18h 33m

$1,993

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

6:30 pm-6:49 pm

2 stops32h 19m

Seattle/Tacoma Intl

Thu 9/10

12:57 pm-3:30 pm

2 stops18h 33m

$2,086

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

6:30 pm-11:35 am

1 stop25h 05m

Seattle/Tacoma Intl

Thu 9/10

8:20 pm-7:25 pm

1 stop15h 05m

$2,506

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

11:35 am-8:38 pm

2 stops17h 03m

Seattle/Tacoma Intl

Thu 9/10

1:24 pm-3:30 pm

2 stops18h 06m

$5,253

Quickest round-trip

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/31

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Thu 9/10

8:20 pm-8:35 pm

1 stop16h 15m

$5,352

Cheapest one-way

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 5/31

7:00 am-5:10 pm

3 stops42h 10m

$674

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 5/31

7:00 am-11:45 am

2 stops36h 45m

$706

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 5/31

3:50 pm-11:35 am

1 stop27h 45m

$733

Quickest one-way

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/3

6:30 am-11:35 am

1 stop13h 05m

$1,093

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 8/3

6:30 am-11:35 am

1 stop13h 05m

$1,094

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

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

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

Prices

Airlines

Can stopping save me money on Belfast City Airport to State of Washington flights?

You could potentially save up to 16% on your flight if you consider stops on a Belfast City Airport to State of Washington flight.

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

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

Fastest flight time	13h 05m
Direct flights	None

The fastest flight from Belfast City Airport to State of Washington takes 13h 05m

There are no direct flights from Belfast City Airport to State of Washington. There are no popular flight routes from Belfast City Airport to State of Washington.

Search flight deals

Frequently asked questions about flying from Belfast City Airport to Washington

When did momondo last update prices for flights from Belfast City Airport to Washington?
Prices for flights from Belfast City Airport to Washington are updated daily.
How old do you have to be to fly from Belfast City Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast City Airport to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Belfast to Washington for you.

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

All flight searches from Belfast to Washington on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Belfast to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Washington from Belfast are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.