Find the best flight deals available from hundreds of sites within seconds
Trusted and free
Cheapflights is 100% free to use. No hidden charges!
Book with flexibility
Easily find flight tickets with no change fees
Cheap first class flights to Seattle in 2026
Find the latest flights to Seattle in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 7,457,451 searches and data were last updated on 2 September 2026.
Explore the most affordable first class flight options available to Seattle. Find the lowest fares based on data from user searches, with prices last updated on 2 September 2026.
Wed 4/1114:10 -
1 stop16h 24m
Wed 11/1112:47 -
1 stop15h 23m
Deal found 30/8£5,381
Tue 3/1114:10 -
1 stop16h 24m
Tue 10/1112:47 -
1 stop15h 23m
Deal found 30/8£5,607
Tue 3/1109:25 -
Nonstop10h 00m
Tue 10/1113:30 -
Nonstop9h 30m
Deal found 30/8£6,070
Wed 7/1009:50 -
Nonstop9h 45m
Thu 19/1118:45 -
Nonstop9h 25m
Deal found 29/8£7,114
Wed 4/1114:55 -
Nonstop9h 55m
Wed 11/1118:45 -
Nonstop9h 25m
Deal found 30/8£8,596
Mon 2/1114:55 -
Nonstop9h 55m
Mon 9/1118:45 -
Nonstop9h 25m
Deal found 30/8£9,242
Best first class flights to Seattle
Discover carefully curated first class flight deals to Seattle that have cost, travel time, and stopover in mind to ensure you get the best travel experience. Data last updated 2 September 2026.
Wed 7/1009:50 -
Nonstop9h 45m
Thu 19/1118:45 -
Nonstop9h 25m
Deal found 29/8£7,114
Fri 6/1114:55 -
Nonstop9h 55m
Tue 10/1118:45 -
Nonstop9h 25m
Deal found 30/8£14,073
Fri 6/1114:55 -
Nonstop9h 55m
Fri 13/1118:45 -
Nonstop9h 25m
Deal found 30/8£14,073
Wed 30/916:30 -
Nonstop9h 55m
Sun 4/1013:30 -
Nonstop9h 15m
Deal found 1/9£14,541
Mon 2/1114:55 -
Nonstop9h 55m
Wed 11/1118:45 -
Nonstop9h 25m
Deal found 30/8£14,073
Mon 2/1114:55 -
Nonstop9h 55m
Thu 12/1118:45 -
Nonstop9h 25m
Deal found 30/8£14,073
Wed 9/915:40 -
1 stop12h 55m
Deal found 30/8£3,168
Wed 16/916:30 -
Nonstop9h 55m
Deal found 31/8£5,093
Sun 18/1009:50 -
Nonstop9h 45m
Deal found 2/9£6,143
Tue 6/1009:50 -
Nonstop9h 45m
Deal found 2/9£9,643
Tue 15/909:50 -
Nonstop9h 45m
Deal found 29/8£5,105
Wed 18/1114:55 -
Nonstop9h 55m
Deal found 2/9£5,981
One-way first class flights to Seattle
Search for one-way first class flight options to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 September 2026.
Wed 9/915:40 -
1 stop12h 55m
Deal found 30/8£3,168
Wed 16/916:30 -
Nonstop9h 55m
Deal found 31/8£5,093
Tue 15/909:50 -
Nonstop9h 45m
Deal found 29/8£5,105
Wed 18/1114:55 -
Nonstop9h 55m
Deal found 2/9£5,981
Sun 18/1009:50 -
Nonstop9h 45m
Deal found 2/9£6,143
Wed 16/912:35 -
1 stop16h 09m
Deal found 31/8£9,537
Quickest first class flights to Seattle
Explore quickest first class flight options to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 2 September 2026.
Wed 7/1009:50 -
Nonstop9h 45m
Thu 19/1118:45 -
Nonstop9h 25m
Deal found 29/8£7,114
Wed 4/1114:55 -
Nonstop9h 55m
Wed 11/1118:45 -
Nonstop9h 25m
Deal found 30/8£8,596
Mon 2/1114:55 -
Nonstop9h 55m
Mon 9/1118:45 -
Nonstop9h 25m
Deal found 30/8£9,242
Thu 5/1114:55 -
Nonstop9h 55m
Sat 7/1118:45 -
Nonstop9h 25m
Deal found 30/8£11,646
Wed 30/916:30 -
Nonstop9h 55m
Sun 4/1013:30 -
Nonstop9h 15m
Deal found 1/9£14,541
Tue 3/1109:25 -
Nonstop10h 00m
Tue 10/1113:30 -
Nonstop9h 30m
Deal found 30/8£6,070
Tue 15/909:50 -
Nonstop9h 45m
Deal found 29/8£5,105
Sun 18/1009:50 -
Nonstop9h 45m
Deal found 2/9£6,143
Tue 6/1009:50 -
Nonstop9h 45m
Deal found 2/9£9,643
Sat 19/909:50 -
Nonstop9h 45m
Deal found 31/8£9,674
Wed 9/909:50 -
Nonstop9h 45m
Deal found 30/8£10,044
Wed 16/916:30 -
Nonstop9h 55m
Deal found 31/8£5,093
Travel insights for first class flights from United Kingdom to Seattle
Get recent, data-driven insights about first class flights from United Kingdom to Seattle including ideal travel times, pricing trends, and more.
GB0-SEA
LHR-SEA
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).
Frequently asked questions about Seattle first class tickets
Find answers to common questions related to First Class tickets for flights to Seattle. Get information on booking, amenities, upgrade options, and more. This FAQ section was last updated on 2 September 2026.
What is the cheapest price for a First Class ticket to Seattle?
According to recent data, a user was able to book a First Class flight from London Heathrow Airport to Seattle for just £656. Secure the cheapest First Class flight tickets to Seattle now - prices start at £4,408/person!
How much do Business Class flight tickets to Seattle cost?
Want comfortable seats without paying First Class prices? For around £2,815/ticket, you can experience comfort and some premium flight services with a Business Class flight to Seattle. Not to mention, Business Class cabin tickets are often 37% cheaper than First Class - in case you need more motivation.
How many premium cabins does Finnair have for flights to Seattle?
Finnair currently offers a couple premium cabin classes on flights to Seattle: Prem Economy Class, Business Class and First Class. Still not enough? Try taking a look at other airlines or choosing a new departing point for more cabin options.
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.
Complete your trip
Flights by cabin class
More first class flights
Popular routes
Complete your trip
Complement your first class flight to Seattle by adding a car hire and/or hotel room to your itinerary.
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.