Cheap flights from Northern Ireland to Seattle

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How to find the cheapest flight from
Northern Ireland to Seattle (SEA)

All the information you need to plan the best null to SEA flight in 2021: compare Northern Ireland to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
How far in advance should I book a flight from Northern Ireland to Seattle?

To save on the cost of your flight from Northern Ireland to Seattle, book at least 52 days before your planned departure. Booking around this time can save you about 51% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £444 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £582.

What is the cheapest month to fly from Northern Ireland to Seattle?

February can be a great time to fly to Seattle from Northern Ireland with a flight ticket averaging about £392. Cheapflights users have found deals in the month of February for as cheap as £258. The most expensive prices can be found in the month of July.

Cheap flights from Northern Ireland to Seattle in May, June 2021

The best prices found for Northern Ireland to SEA flights in May, June
18 Jun - 22 Jun
£565pp
BHD
Belfast City
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
BHD
Belfast City
19 Jun - 23 Jun
£670pp
BHD
Belfast City
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
BHD
Belfast City

Northern Ireland to Seattle 2021 flight deals

Cheap flights to Seattle from Northern Ireland found for this year
7 Aug - 14 Aug
£502pp
BHD
Belfast City
Multiple airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
BHD
Belfast City
6 Aug - 14 Aug
£506pp
BHD
Belfast City
Multiple airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
BHD
Belfast City
1 Dec - 5 Dec
£559pp
BHD
Belfast City
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
BHD
Belfast City

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Northern Ireland</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From Northern Ireland to Seattle

Are flight prices decreasing from Northern Ireland to Seattle due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Northern Ireland and Seattle for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Northern Ireland to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Northern Ireland to Seattle/Tacoma Intl that may be offering flexible cancellation policies are United Airlines and British Airways. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

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 centre.

Can I find flights from Northern Ireland to Seattle for under £502 on Cheapflights?

Yes, there are multiple flights from Northern Ireland to Seattle for under £502. The cheapest flight booked recently is on Multiple Airlines for just £502, but on average you can expect to pay £1,027.

Are there direct flights from Northern Ireland to Seattle for under £502 on Cheapflights?

There are no direct flights from Northern Ireland to Seattle, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

What are the cheapest flights from Northern Ireland to Seattle?

Looking at all options, your cheapest flight can be booked for £521. While the most popular route (Belfast City - Seattle/Tacoma Intl) can be booked for £502 on average our data indicates £527 when flying from Northern Ireland to Seattle

How long does is the flight from Northern Ireland to Seattle?

Airlines like Aer Lingus, American Airlines, and Finnair fly from Northern Ireland to Seattle in about 12h 35m. The time it takes to get you to your destination can typically vary by up to 4h 25m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to flying from Northern Ireland to Seattle return?

Flying on Delta is currently your cheapest option to Seattle, with prices starting at £566. Additional return tickets that might be worth considering are offered by American Airlines and Virgin Atlantic, with the lowest prices starting at £670 and £739, respectively.

Departure points for flights from Northern Ireland to Seattle

Select to see more specific information for flights to Seattle from all departure points in Northern Ireland.
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Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Northern Ireland to Seattle.
Today's exchange rate
£1 = $1.40
Average temperature for May in Seattle
19.0 °C
Avg rainfall for May in Seattle
45.0 mm

Airports servicing

Airports servicing Seattle

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