When did momondo last update prices for flights from Northern Ireland to Washington?

Prices for flights from Northern Ireland to Washington are refreshed on a daily basis.

How old do you have to be to fly from Northern Ireland to Washington?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Northern Ireland to Washington.

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

The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$727 Cheap Flights from Northern Ireland to Washington in 2025/26

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Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:45 am - 6:00 pmBHD-SEA

40h 15m2 stops

3:35 pm - 2:50 pmSEA-BHD

16h 15m2 stops

$727Multiple Airlines

Find Deal

Tue, Mar 17 - Tue, Mar 24

7:15 am - 5:00 pmBFS-SEA

17h 45m2 stops

2:35 pm - 5:55 pmSEA-BFS

19h 20m2 stops

$784Multiple Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

6:30 am - 6:00 pmBFS-SEA

18h 30m2 stops

3:35 pm - 5:55 pmSEA-BFS

19h 20m2 stops

$807Multiple Airlines

Find Deal

Tue, Mar 17 - Tue, Mar 24

11:25 am - 5:55 pmBHD-SEA

13h 30m1 stop

2:25 pm - 11:30 amSEA-BHD

14h 05m1 stop

$810British Airways

Find Deal

Tue, Mar 17 - Tue, Mar 24

10:00 am - 11:08 pmBHD-SEA

20h 08m2 stops

7:50 pm - 6:40 pmSEA-BHD

15h 50m1 stop

$816British Airways

Find Deal

Tue, Mar 17 - Tue, Mar 24

9:05 am - 4:55 pmBHD-SEA

15h 50m1 stop

7:50 pm - 6:35 pmSEA-BHD

15h 45m1 stop

$871American Airlines

Find Deal

Thu, Mar 5 - Mon, Mar 9

11:05 am - 11:30 amBHD-SEA

32h 25m1 stop

7:50 pm - 6:35 pmSEA-BHD

15h 45m1 stop

$875American Airlines

Find Deal

Thu, Mar 5 - Mon, Mar 9

10:40 am - 11:07 pmBHD-SEA

20h 27m2 stops

1:48 pm - 2:15 pmSEA-BHD

17h 27m2 stops

$876American Airlines

Find Deal

Thu, Mar 5 - Mon, Mar 9

9:05 am - 11:07 pmBHD-SEA

22h 02m2 stops

7:00 am - 2:15 pmSEA-BHD

24h 15m2 stops

$880American Airlines

Find Deal

Thu, Mar 5 - Mon, Mar 9

7:15 am - 5:00 pmBFS-SEA

17h 45m2 stops

3:10 pm - 8:15 pmSEA-BFS

21h 05m3 stops

$1,133Multiple Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

British Airways flights from Northern Ireland to State of Washington

Our best British Airways deals on Northern Ireland to State of Washington flight tickets

British Airways

Mar 17

BHD11:25 amBelfast City

13h 30m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

Mar 24

SEA2:25 pmSeattle/Tacoma Intl

14h 05m

1 stop

BHD11:30 amBelfast City

$810

Find similar

British Airways

Mar 17

BHD10:00 amBelfast City

20h 08m

2 stops

SEA11:08 pmSeattle/Tacoma Intl

Mar 24

SEA7:50 pmSeattle/Tacoma Intl

15h 50m

1 stop

BHD6:40 pmBelfast City

$816

Find similar

American Airlines flights from Northern Ireland to State of Washington

Our best American Airlines deals on Northern Ireland to State of Washington flight tickets

American Airlines

Mar 5

BHD9:05 amBelfast City

15h 50m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Mar 9

SEA7:50 pmSeattle/Tacoma Intl

15h 45m

1 stop

BHD6:35 pmBelfast City

$871

Find similar

American Airlines

Mar 5

BHD11:05 amBelfast City

32h 25m

1 stop

SEA11:30 amSeattle/Tacoma Intl

Mar 9

SEA7:50 pmSeattle/Tacoma Intl

15h 45m

1 stop

BHD6:35 pmBelfast City

$875

Find similar

American Airlines

Mar 5

BHD10:40 amBelfast City

20h 27m

2 stops

SEA11:07 pmSeattle/Tacoma Intl

Mar 9

SEA1:48 pmSeattle/Tacoma Intl

17h 27m

2 stops

BHD2:15 pmBelfast City

$876

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Northern Ireland to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 3/17

8:45 am-6:00 pm

2 stops40h 15m

Seattle/Tacoma Intl

Tue 3/24

3:35 pm-2:50 pm

2 stops16h 15m

$727

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Tue 11/11

7:15 am-5:00 pm

2 stops17h 45m

Seattle/Tacoma Intl

Tue 11/18

2:35 pm-5:55 pm

2 stops19h 20m

$784

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Tue 3/17

6:30 am-6:00 pm

2 stops18h 30m

Seattle/Tacoma Intl

Tue 3/24

3:35 pm-5:55 pm

2 stops19h 20m

$807

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 3/17

11:25 am-5:55 pm

1 stop13h 30m

Seattle/Tacoma Intl

Tue 3/24

2:25 pm-11:30 am

1 stop14h 05m

$810

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 3/17

10:00 am-11:08 pm

2 stops20h 08m

Seattle/Tacoma Intl

Tue 3/24

7:50 pm-6:40 pm

1 stop15h 50m

$816

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 3/5

9:05 am-4:55 pm

1 stop15h 50m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-6:35 pm

1 stop15h 45m

$871

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 3/5

11:05 am-11:30 am

1 stop32h 25m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-6:35 pm

1 stop15h 45m

$875

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 3/5

10:40 am-11:07 pm

2 stops20h 27m

Seattle/Tacoma Intl

Mon 3/9

1:48 pm-2:15 pm

2 stops17h 27m

$876

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 3/5

9:05 am-11:07 pm

2 stops22h 02m

Seattle/Tacoma Intl

Mon 3/9

7:00 am-2:15 pm

2 stops24h 15m

$880

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Tue 11/11

7:15 am-5:00 pm

2 stops17h 45m

Seattle/Tacoma Intl

Tue 11/18

3:10 pm-8:15 pm

3 stops21h 05m

$1,133

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Northern Ireland 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

Can stopping save me money on Northern Ireland to State of Washington flights?

You could potentially save up to 8% on your flight if you consider stops on a Northern Ireland to State of Washington flight.

Cheap Northern Ireland to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to State of Washington

Direct flights	None

There are no direct flights from Northern Ireland to State of Washington. There are no popular flight routes from Northern Ireland to State of Washington.

Search flight deals

When did momondo last update prices for flights from Northern Ireland to Washington?
Prices for flights from Northern Ireland to Washington are refreshed on a daily basis.
How old do you have to be to fly from Northern Ireland to Washington?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Northern Ireland to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

It is quick and easy to find Northern Ireland to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

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

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

How can momondo help me find flights from Northern Ireland to Washington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from Northern Ireland.

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

Of course. momondo tracks the price of Northern Ireland to Washington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Northern Ireland to Washington from $727

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Washington departing on 3/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Northern Ireland to Washington

Cheap round-trip flights

British Airways flights from Northern Ireland to State of Washington

Our best British Airways deals on Northern Ireland to State of Washington flight tickets

American Airlines flights from Northern Ireland to State of Washington

Our best American Airlines deals on Northern Ireland to State of Washington flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Northern Ireland to Washington that are best for you.

See travel insights to Washington from

How to get the cheapest flight ticket from Northern Ireland 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

Can stopping save me money on Northern Ireland to State of Washington flights?

You could potentially save up to 8% on your flight if you consider stops on a Northern Ireland to State of Washington flight.

Cheap Northern Ireland to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to State of Washington

Direct flights

When did momondo last update prices for flights from Northern Ireland to Washington?

How old do you have to be to fly from Northern Ireland to Washington?

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

Why use momondo?

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

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

How can momondo help me find flights from Northern Ireland to Washington?

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

An easier way to manage your State of Washington 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington

Popular cities in Washington

Popular flights according to clicks in the last 7 days on momondo