Question 1

What are the most popular routes to and from Belfast?

Accepted Answer

Travelers frequently search for route combinations, such as Belfast and Manchester, London, Edinburgh, Nottingham, Alicante, Leeds, Birmingham, Glasgow, Isle of Wight, Antalya, Istanbul, Málaga, Southampton, Lanzarote, Budapest, Tirana, Newcastle upon Tyne, Palma, Majorca, Saint Peter Port, Faro.

Question 2

What are the most popular routes to and from Seattle?

Accepted Answer

Travelers frequently search for route combinations, such as Seattle and London, New York, Calgary, Los Angeles, Mexico City, Guadalajara, San Francisco, Las Vegas, Phoenix, Manchester, Edinburgh, Ontario, Chicago, Denver, San Diego, Dallas, Boston, Washington, D.C., Salt Lake City, Toronto.

Question 3

Which airports are there in Belfast?

Accepted Answer

Belfast is mainly served by Belfast International. But there are other airports nearby, including George Best Belfast City.

Question 4

What airports are near Belfast?

Accepted Answer

The main airport in Belfast is Belfast International. It is also served by Dublin, Isle of Man, Ireland West Airport Knock, Glasgow Prestwick, City of Derry, Donegal.

Question 5

What airports are near Seattle?

Accepted Answer

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Bellingham International, Abbotsford International, Yakima Air Terminal, Pangborn Memorial, Paine Field Everett, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB.

Question 6

Which airlines fly between Belfast and Seattle?

Accepted Answer

Currently, you can fly between Belfast and Seattle with Ryanair, easyJet, JetBlue Airways, Icelandair, Alaska Airlines.

Question 7

When’s the best time to travel between Belfast and Seattle?

Accepted Answer

If you don’t have specific dates for your trip between Belfast and Seattle, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Question 8

What flights operate between Belfast and Seattle?

Accepted Answer

Traveling between Belfast and Seattle, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

Question 9

How many airports are there near Belfast?

Accepted Answer

There are a number of airports in and around Belfast. The main one is Belfast International and other nearby airports include Dublin, Isle of Man, Ireland West Airport Knock, Glasgow Prestwick, City of Derry, Donegal

Question 10

How many airports are there near Seattle?

Accepted Answer

There are a number of airports in and around Seattle. The main one is Seattle–Tacoma International and other nearby airports include Vancouver International, Portland International, Bellingham International, Abbotsford International, Yakima Air Terminal, Pangborn Memorial, Paine Field Everett, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB.

Question 11

What time do nonstop (direct) flights between Belfast and Seattle depart?

Accepted Answer

This depends on the airline’s flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Belfast, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 12

What time do nonstop (direct) flights between Belfast and Seattle arrive?

Accepted Answer

This depends on the airline’s flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Seattle, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Question 13

What time do flights between Belfast and Seattle depart?

Accepted Answer

This depends on the airline’s flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Belfast, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 14

What time do flights between Belfast and Seattle arrive?

Accepted Answer

This depends on the airline’s flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Seattle, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Cheapest one-way trip	£473
Cheapest round-trip	£649
Average round-trip	£807
Includes rare itinerary	Travel hack
Most popular airline	Ryanair

Transport Option	Typical Time	Typical Cost	Frequency	Best For
Link Light Rail (1 Line)	35-45 min	$3 – $3.25; fare to downtown stations	every 6–15 min (traffic dependent)	budget travelers to downtown
Sound Transit Express Bus 560	45-70 min	$2.75 – $3.25; varies by destination zone	every 15–30 min (traffic dependent)	Bellevue and Eastside
King County Metro Bus	50-80 min	$2.75; flat fare	every 15–30 min (traffic dependent)	local connections
Taxi	25-50 min	$45 – $65; metered; flat rate to downtown available	on-demand 24/7 (traffic dependent)	door-to-door convenience
Ride-hailing (Uber/Lyft)	25-50 min	$35 – $60; surge pricing may apply	on-demand 24/7 (traffic dependent)	flexible pickup locations
Private Transfer / Shuttle	25-50 min	$50 – $100; pre-booked; varies by provider	by reservation (traffic dependent)	groups and guaranteed pickup
Rental Car	25-50 min	$40 – $100; per day; varies by vehicle and provider	24/7 availability (traffic dependent)	exploring beyond Seattle

Name	Carrier code	IATA Code	Passport needed during booking
Ryanair	RYR	FR	No
easyJet	EZY	U2	Yes
JetBlue Airways	JBU	B6	No
Icelandair	ICE	FI	No
Alaska Airlines	ASA	AS	No

Month	Average monthly max temperature	Average monthly min temperature
January	7°C	2°C
February	8°C	2°C
March	10°C	3°C
April	13°C	5°C
May	18°C	8°C
June	21°C	10°C
July	25°C	13°C
August	25°C	14°C
September	21°C	11°C
October	15°C	8°C
November	10°C	4°C
December	6°C	2°C

Cheap flights from Belfast to Seattle from £473

Explore flight deals to Seattle

Not happy with the results? Try some of our useful filters

Search by stops

Search by carrier

Search by price

Search by departure date

Not happy with the results? Try some of our useful filters

Search by stops

Search by carrier

Search by price

Search by departure date

How much do flights to Seattle cost?

Cheapest one-way trip

Cheapest round-trip

Average round-trip

Includes rare itinerary

Most popular airline

Getting from Seattle airport to the city center

Key info about flying to Seattle

Check-in for a flight from Belfast to Seattle

Weather in Seattle

Average Weather

14 day forecast

Frequently asked questions