What is the cheapest airline that flies from Washington to Northern Ireland?

British Airways and Delta are the most popular carriers operating from Washington to Northern Ireland

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

Prices for flights from Washington to Northern Ireland are updated daily.

How many operators does momondo search for flights from Washington to Northern Ireland?

The number of operators available for flights from Washington to Northern Ireland is 1 as of September 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The required travel and health documents for your Northern Ireland 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 Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$293 Cheap Flights from Washington to Northern Ireland in 2025/26

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Round-trip

One-way

Cheap round-trip flights

2:35 pm - 3:15 pmSEA-BFS

16h 40m2 stops

6:25 am - 5:00 pmBFS-SEA

18h 35m2 stops

$610Multiple Airlines

Find Deal

mar., nov. 4 - mar., nov. 11

12:07 pm - 2:15 pmPDX-BHD

19h 08m2 stops

11:35 am - 11:13 pmBHD-PDX

18h 38m2 stops

$721Multiple Airlines

Find Deal

sáb., mar. 21 - sáb., mar. 28

5:45 pm - 4:50 pmPDX-BHD

15h 05m1 stop

5:45 pm - 3:55 pmBHD-PDX

30h 10m1 stop

$773British Airways

Find Deal

dom., mar. 1 - jue., mar. 5

1:35 pm - 2:15 pmSEA-BHD

16h 40m1 stop

11:25 am - 5:55 pmBHD-SEA

13h 30m1 stop

$781Finnair

Find Deal

sáb., mar. 7 - mié., mar. 18

6:50 pm - 4:35 pmSEA-BHD

13h 45m1 stop

3:10 pm - 4:55 pmBHD-SEA

33h 45m1 stop

$782British Airways

Find Deal

mié., dic. 3 - dom., dic. 7

10:05 pm - 4:50 pmPDX-BHD

34h 45m2 stops

5:20 pm - 7:18 pmBHD-PDX

33h 58m2 stops

$782Delta

Find Deal

lun., dic. 22 - jue., ene. 8

1:45 pm - 9:00 pmPDX-BHD

47h 15m2 stops

5:20 pm - 10:39 pmBHD-PDX

37h 19m2 stops

$788Delta

Find Deal

mié., dic. 24 - jue., ene. 8

11:10 am - 4:50 pmPDX-BHD

21h 40m2 stops

5:20 pm - 11:25 amBHD-PDX

26h 05m1 stop

$804Virgin Atlantic

Find Deal

dom., mar. 1 - jue., mar. 5

7:20 am - 4:50 pmSEA-BHD

25h 30m2 stops

6:30 am - 11:50 amBHD-SEA

13h 20m1 stop

$805Virgin Atlantic

Find Deal

mié., dic. 3 - dom., dic. 7

6:10 am - 2:15 pmPDX-BHD

48h 05m2 stops

11:05 am - 9:11 pmBHD-PDX

42h 06m2 stops

$2,104Finnair

Find Deal

dom., dic. 21 - jue., ene. 8

British Airways flights from State of Washington to Northern Ireland

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

British Airways

Mar 1

PDX5:45 pmPortland

15h 05m

1 stop

BHD4:50 pmBelfast City

Mar 5

BHD5:45 pmBelfast City

30h 10m

1 stop

PDX3:55 pmPortland

$773

Find similar

British Airways

Dec 3

SEA6:50 pmSeattle/Tacoma Intl

13h 45m

1 stop

BHD4:35 pmBelfast City

Dec 7

BHD3:10 pmBelfast City

33h 45m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

$782

Find similar

British Airways

Dec 3

SEA6:50 pmSeattle/Tacoma Intl

28h 40m

1 stop

BHD7:30 amBelfast City

Dec 7

BHD3:10 pmBelfast City

33h 45m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

$791

Find similar

Delta flights from State of Washington to Northern Ireland

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

Delta

Dec 22

PDX10:05 pmPortland

34h 45m

2 stops

BHD4:50 pmBelfast City

Jan 8

BHD5:20 pmBelfast City

33h 58m

2 stops

PDX7:18 pmPortland

$782

Find similar

Delta

Dec 24

PDX1:45 pmPortland

47h 15m

2 stops

BHD9:00 pmBelfast City

Jan 8

BHD5:20 pmBelfast City

37h 19m

2 stops

PDX10:39 pmPortland

$788

Find similar

Delta

Dec 22

PDX10:05 pmPortland

34h 45m

2 stops

BHD4:50 pmBelfast City

Jan 6

BHD5:20 pmBelfast City

36h 15m

2 stops

PDX9:35 pmPortland

$868

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

mar. 11/4

2:35 pm-3:15 pm

2 stops16h 40m

Belfast Intl

mar. 11/11

6:25 am-5:00 pm

2 stops18h 35m

$610

PortlandBelfast

PDX - BHD

PDXBHD

Portland

sáb. 3/21

12:07 pm-2:15 pm

2 stops19h 08m

Belfast City

sáb. 3/28

11:35 am-11:13 pm

2 stops18h 38m

$721

PortlandBelfast

PDX - BHD

PDXBHD

Portland

dom. 3/1

5:45 pm-4:50 pm

1 stop15h 05m

Belfast City

jue. 3/5

5:45 pm-3:55 pm

1 stop30h 10m

$773

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

sáb. 3/7

1:35 pm-2:15 pm

1 stop16h 40m

Belfast City

mié. 3/18

11:25 am-5:55 pm

1 stop13h 30m

$781

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 12/3

6:50 pm-4:35 pm

1 stop13h 45m

Belfast City

dom. 12/7

3:10 pm-4:55 pm

1 stop33h 45m

$782

PortlandBelfast

PDX - BHD

PDXBHD

Portland

lun. 12/22

10:05 pm-4:50 pm

2 stops34h 45m

Belfast City

jue. 1/8

5:20 pm-7:18 pm

2 stops33h 58m

$782

PortlandBelfast

PDX - BHD

PDXBHD

Portland

mié. 12/24

1:45 pm-9:00 pm

2 stops47h 15m

Belfast City

jue. 1/8

5:20 pm-10:39 pm

2 stops37h 19m

$788

PortlandBelfast

PDX - BHD

PDXBHD

Portland

dom. 3/1

11:10 am-4:50 pm

2 stops21h 40m

Belfast City

jue. 3/5

5:20 pm-11:25 am

1 stop26h 05m

$804

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

mié. 12/3

7:20 am-4:50 pm

2 stops25h 30m

Belfast City

dom. 12/7

6:30 am-11:50 am

1 stop13h 20m

$805

PortlandBelfast

PDX - BHD

PDXBHD

Portland

dom. 12/21

6:10 am-2:15 pm

2 stops48h 05m

Belfast City

jue. 1/8

11:05 am-9:11 pm

2 stops42h 06m

$2,104

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Northern Ireland

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

What is the cheapest day to depart on your flight to Northern Ireland?

The cheapest day to depart on your flight to Northern Ireland is on a Tuesday when prices can be found for as low as $724. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Northern Ireland for around $1,208.

What is the cheapest time of day to depart on your flight to Northern Ireland?

At noon is the cheapest time of day to fly from State of Washington to Northern Ireland when you can find flight prices for as low as $794. Flying to Northern Ireland at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $1,000.

Cheap State of Washington to Northern Ireland flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Washington to Northern Ireland?
Prices for flights from Washington to Northern Ireland are updated daily.
How many operators does momondo search for flights from Washington to Northern Ireland?
The number of operators available for flights from Washington to Northern Ireland is 1 as of September 2025.
How old do you have to be to fly from Washington to Northern Ireland?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The required travel and health documents for your Northern Ireland 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 Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from State of Washington to Northern Ireland

Compare and see reviews for airlines that fly from State of Washington to Northern Ireland with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $737	Free Cancellation	Rating 6.7 7,386 reviews		Search British Airways flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Northern Ireland. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Northern Ireland from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Northern Ireland from Washington.

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

Price alerts on flights to Northern Ireland from Washington 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.

An easier way to manage your Northern Ireland 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.

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mié. 10/22

mié. 10/29

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Find better results for your trip to Northern Ireland

Popular cities in Northern Ireland

Flights to Londonfrom $328

Flights to Manchesterfrom $381

Flights to Edinburghfrom $389

Flights to Glasgowfrom $394

Flights to Birminghamfrom $392

Flights to Newcastle upon Tynefrom $430

Flights to Belfastfrom $460

Flights to Bristolfrom $461

Flights to Invernessfrom $455

Flights to Liverpoolfrom $415

Flights to Aberdeenfrom $486

Flights to Leedsfrom $445

Cheap flights from Washington to Northern Ireland from $293

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 Northern Ireland departing on 3/1. 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 Washington to Northern Ireland

Cheap round-trip flights

Cheap one-way flights

British Airways flights from State of Washington to Northern Ireland

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

Delta flights from State of Washington to Northern Ireland

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

momondo Fare Finder

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

See travel insights to Northern Ireland from

How to get the cheapest flight ticket from State of Washington to Northern Ireland

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 Northern Ireland?

What is the cheapest time of day to depart on your flight to Northern Ireland?

What is the cheapest airline that flies from Washington to Northern Ireland?

British Airways and Delta are the most popular carriers operating from Washington to Northern Ireland

Cheap State of Washington to Northern Ireland flight deals and tips

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

Direct flights

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

How many operators does momondo search for flights from Washington to Northern Ireland?

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

What documentation or ID do you need to fly to Northern Ireland?

Best airlines flying from State of Washington to Northern Ireland

Compare and see reviews for airlines that fly from State of Washington to Northern Ireland with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Northern Ireland 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 Northern Ireland

Popular cities in Northern Ireland

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