Find flights
Airlines
FAQs

Cheap flights from Northern Ireland to Seattle from £515

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/3. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
20 Nov — 27 Nov1
1 adult

Cheap flight deals from Northern Ireland to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Northern Ireland (GBNIR) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 November 2024.

Find flight deals from Northern Ireland to Seattle

Cheapest flights from Northern Ireland to Seattle
Explore the most affordable flight options available from Northern Ireland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 November 2024.

Fri 15/1108:40BHD - SEA
1 stop16h 15mBritish Airways
Sun 17/1114:00SEA - BHD
2 stops17h 30mBritish Airways
Deal found 14/11£979
Fri 15/1119:35BHD - SEA
1 stop23h 45mMultiple Airlines
Sun 17/1113:59SEA - BHD
2 stops17h 31mMultiple Airlines
Deal found 14/11£983
Fri 15/1117:20BHD - SEA
1 stop26h 20mKLM
Sun 17/1114:05SEA - BHD
1 stop22h 55mKLM
Deal found 15/11£1,110
Fri 15/1106:30BHD - SEA
2 stops16h 45mDelta
Sun 17/1106:05SEA - BHD
2 stops26h 45mDelta
Deal found 14/11£1,119

Find flights from Northern Ireland to Seattle within your budget

Customise your flight search to find flights from Northern Ireland to Seattle 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, Cheapflights users made 943,810 searches. Data last updated 15 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:35-16:00

2 stops17h 25m

Seattle/Tacoma Intl

Thu 29/5

19:40-17:40

1 stop14h 00m

£688

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-23:25

2 stops24h 55m

Seattle/Tacoma Intl

Thu 29/5

09:40-16:50

2 stops23h 10m

£701

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/5

06:35-11:35

1 stop13h 00m

Seattle/Tacoma Intl

Fri 30/5

19:40-18:10

1 stop14h 30m

£750

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/5

06:35-11:35

1 stop13h 00m

Seattle/Tacoma Intl

Fri 30/5

19:40-10:10

1 stop30h 30m

£773

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 22/3

15:05-19:15

2 stops35h 10m

£515

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Sat 22/3

14:10-18:00

2 stops34h 50m

£563

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sat 22/3

11:15-17:55

1 stop13h 40m

£687

Flights are sorted by cheapest first

Deals found on 15/11

Best time to book a flight from Northern Ireland to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Northern Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Northern Ireland to Seattle

Get recent, data-driven insights about flights from Northern Ireland to Seattle including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from NIR to SEA?

Find hourly flight availability from Northern Ireland to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 November 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Seattle as you normally would.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 15 November 2024.
Delta
8.0
Very Good
8,786 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,786 reviews
Delta
8.0
Very Good
8,786 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
8,786 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Aer Lingus
7.1
Good
1,085 reviews
Delta
8.0
Very Good
8,786 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Iberia
7.0
Good
2,664 reviews
Delta
8.0
Very Good
8,786 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

British Airways
6.7
Okay
6,836 reviews
Delta
8.0
Very Good
8,786 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Northern Ireland?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Northern Ireland. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • Can I find deals for flights from Northern Ireland to Seattle that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Seattle.

  • Can I find deals for business class flights from Northern Ireland to Seattle?

    Yes. Cheapflights offers flight deals from Northern Ireland to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Northern Ireland to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Seattle (average of £616). Flying from Northern Ireland to Seattle in July is currently the most expensive (average of £841). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Seattle flights
Gatwick to Seattle flights
London City to Seattle flights
Heathrow to Portland flights
Manchester to Seattle flights
Gatwick to Portland flights
London City to Portland flights
Edinburgh to Seattle flights
Birmingham to Seattle flights
Luton to Seattle flights
Glasgow Intl to Seattle flights
Heathrow to Spokane flights
Stansted to Seattle flights
Leeds to Seattle flights
Belfast Intl to Seattle flights
Glasgow Intl to Portland flights
Edinburgh to Portland flights
Belfast City to Seattle flights
Heathrow to Pasco flights
Gatwick to Spokane flights
Manchester to Portland flights
Luton to Portland flights
London City to Spokane flights
Bristol to Seattle flights
Stansted to Portland flights
Bristol to Portland flights
Southampton to Seattle flights
Newcastle upon Tyne to Seattle flights
Birmingham to Portland flights
Manchester to Spokane flights
Heathrow to Bellingham flights
Southend to Seattle flights
Newquay to Seattle flights
Edinburgh to Pasco flights
Leeds to Portland flights
Grimsby to Portland flights
Birmingham to Spokane flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Northern Ireland to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Northern Ireland to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Seattle?

Cheapflights helps you find that perfect flight to Seattle from Northern Ireland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Northern Ireland to Seattle with no change fees?

Yes! Cheapflights helps users easily find flights from Northern Ireland to Seattle with no change fees.

Can Cheapflights notify me if prices for flights from Northern Ireland to Seattle become cheaper?

Yes! Start tracking prices for Northern Ireland to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines