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.

$738 Cheap Flights from Northern Ireland to Washington in 2025

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Find the cheapest flights from Northern Ireland to Washington

Round-trip

Cheap round-trip flights

6:40 am - 11:35 amBHD-SEA

12h 55m1 stop

1:30 pm - 1:30 pmSEA-BHD

16h 00m1 stop

$749British Airways

Find Deal

Mon, Sep 15 - Wed, Sep 24

6:40 am - 11:35 amBHD-SEA

12h 55m1 stop

1:30 pm - 1:30 pmSEA-BHD

16h 00m1 stop

$753British Airways

Find Deal

Mon, Sep 15 - Wed, Sep 24

6:40 am - 11:35 amBHD-SEA

12h 55m1 stop

1:30 pm - 11:55 amSEA-BHD

14h 25m1 stop

$764British Airways

Find Deal

Mon, Sep 15 - Wed, Sep 24

6:30 pm - 11:10 amBHD-SEA

24h 40m1 stop

10:11 am - 11:55 amSEA-BHD

17h 44m2 stops

$878British Airways

Find Deal

Mon, Sep 15 - Wed, Sep 24

5:55 pm - 5:50 pmBHD-SEA

31h 55m2 stops

7:35 pm - 10:30 amSEA-BHD

30h 55m2 stops

$881Aer Lingus

Find Deal

Mon, Sep 15 - Wed, Sep 24

5:55 pm - 5:50 pmBHD-SEA

31h 55m2 stops

7:35 pm - 7:55 pmSEA-BHD

16h 20m2 stops

$892Aer Lingus

Find Deal

Mon, Sep 15 - Wed, Sep 24

7:30 pm - 7:06 pmBHD-SEA

31h 36m2 stops

1:30 pm - 11:55 amSEA-BHD

14h 25m1 stop

$894British Airways

Find Deal

Mon, Sep 15 - Wed, Sep 24

6:40 am - 11:35 amBHD-SEA

12h 55m1 stop

7:48 am - 11:55 amSEA-BHD

20h 07m2 stops

$983

Find Deal

Mon, Sep 15 - Wed, Sep 24

6:35 am - 11:10 amBHD-SEA

12h 35m1 stop

1:30 pm - 1:30 pmSEA-BHD

16h 00m1 stop

$3,862British Airways

Find Deal

Tue, Oct 14 - Wed, Oct 22

8:20 pm - 9:45 pmBHD-SEA

33h 25m2 stops

7:30 am - 12:40 pmSEA-BHD

21h 10m2 stops

$3,864

Find Deal

Tue, Oct 14 - Wed, Oct 22

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

Sep 15

BHD6:40 amBelfast City

12h 55m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Sep 24

SEA1:30 pmSeattle/Tacoma Intl

16h 00m

1 stop

BHD1:30 pmBelfast City

$749

Find similar

British Airways

Sep 15

BHD6:40 amBelfast City

12h 55m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Sep 24

SEA1:30 pmSeattle/Tacoma Intl

16h 00m

1 stop

BHD1:30 pmBelfast City

$753

Find similar

British Airways

Sep 15

BHD6:40 amBelfast City

12h 55m

1 stop

SEA11:35 amSeattle/Tacoma Intl

Sep 24

SEA1:30 pmSeattle/Tacoma Intl

14h 25m

1 stop

BHD11:55 amBelfast City

$764

Find similar

Aer Lingus flights from Northern Ireland to State of Washington

Our best Aer Lingus deals on Northern Ireland to State of Washington flight tickets

Aer Lingus

Sep 15

BHD5:55 pmBelfast City

31h 55m

2 stops

SEA5:50 pmSeattle/Tacoma Intl

Sep 24

SEA7:35 pmSeattle/Tacoma Intl

30h 55m

2 stops

BHD10:30 amBelfast City

$881

Find similar

Aer Lingus

Sep 15

BHD5:55 pmBelfast City

31h 55m

2 stops

SEA5:50 pmSeattle/Tacoma Intl

Sep 24

SEA7:35 pmSeattle/Tacoma Intl

16h 20m

2 stops

BHD7:55 pmBelfast City

$892

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

Mon 9/15

6:40 am-11:35 am

1 stop12h 55m

Seattle/Tacoma Intl

Wed 9/24

1:30 pm-1:30 pm

1 stop16h 00m

$749

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

6:40 am-11:35 am

1 stop12h 55m

Seattle/Tacoma Intl

Wed 9/24

1:30 pm-1:30 pm

1 stop16h 00m

$753

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

6:40 am-11:35 am

1 stop12h 55m

Seattle/Tacoma Intl

Wed 9/24

1:30 pm-11:55 am

1 stop14h 25m

$764

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

6:30 pm-11:10 am

1 stop24h 40m

Seattle/Tacoma Intl

Wed 9/24

10:11 am-11:55 am

2 stops17h 44m

$878

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

5:55 pm-5:50 pm

2 stops31h 55m

Seattle/Tacoma Intl

Wed 9/24

7:35 pm-10:30 am

2 stops30h 55m

$881

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

5:55 pm-5:50 pm

2 stops31h 55m

Seattle/Tacoma Intl

Wed 9/24

7:35 pm-7:55 pm

2 stops16h 20m

$892

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

7:30 pm-7:06 pm

2 stops31h 36m

Seattle/Tacoma Intl

Wed 9/24

1:30 pm-11:55 am

1 stop14h 25m

$894

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Mon 9/15

6:40 am-11:35 am

1 stop12h 55m

Seattle/Tacoma Intl

Wed 9/24

7:48 am-11:55 am

2 stops20h 07m

$983

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 10/14

6:35 am-11:10 am

1 stop12h 35m

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-1:30 pm

1 stop16h 00m

$3,862

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 10/14

8:20 pm-9:45 pm

2 stops33h 25m

Seattle/Tacoma Intl

Wed 10/22

7:30 am-12:40 pm

2 stops21h 10m

$3,864

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.

An easier way to manage your State of Washington trip

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Find better results for your trip to Washington

Popular cities in Washington

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Cheap flights from Northern Ireland to Washington from $749

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 9/15. 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

Aer Lingus flights from Northern Ireland to State of Washington

Our best Aer Lingus 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