How do most travelers feel about Finnair?

When planning your LON-SEA trip, keep in mind that Finnair is typically rated 8.0/10. This rating comes from 10,402 reviews by Cheapflights users who have traveled with Finnair.

Can I get a flight from London to Seattle on Finnair for under £800?

Cheapflights currently has 4 LON-SEA flights for under £800. Flights to Seattle will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.

How far ahead should I book a flight from London to Seattle with Finnair?

Booking with Finnair 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Seattle with Finnair?

Currently, the most affordable month to book a Finnair flight from London to Seattle in December, with an average price of £576. Conversely, traveling with Finnair from London to Seattle in July will be the most expensive, with an average cost of £809. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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.

Fly Finnair from London to SEA as low as £552

Cheapflights users flying from London to Seattle on Finnair typically fly into Seattle/Tacoma Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from London to Seattle in 2024

Popular in	July
Cheapest in	November
Average price (all airlines)	£615
One-way from	£552
Return from	£528

Highest demand for flights from London to Seattle/Tacoma Intl; 18% potential price increase.

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Best time to find cheap flights from London to Seattle/Tacoma Intl; 2% potential price drop.

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Average price for all London to Seattle/Tacoma Intl flights (one-way and round-trip).

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Cheapest one-way Finnair flight from London to Seattle/Tacoma Intl

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Cheapest return Finnair flight from London to Seattle/Tacoma Intl

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Can I get a flight from London to Seattle on Finnair for under £800?
Cheapflights currently has 4 LON-SEA flights for under £800. Flights to Seattle will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.
How do most travelers feel about Finnair?
When planning your LON-SEA trip, keep in mind that Finnair is typically rated 8.0/10. This rating comes from 10,402 reviews by Cheapflights users who have traveled with Finnair.

Cheapest Finnair flights from London to Seattle

Tue 18/609:50LHR - SEA

Nonstop9h 45mFinnair

Wed 3/708:30SEA - LHR

1 stop20h 20mFinnair

Deal found 2/6£561

Pick Dates

Tue 18/608:10LHR - SEA

1 stop15h 37mFinnair

Wed 3/708:30SEA - LHR

1 stop20h 20mFinnair

Deal found 2/6£565

Pick Dates

Tue 25/616:55LHR - SEA

1 stop32h 17mFinnair

Thu 11/710:02SEA - LHR

1 stop13h 58mFinnair

Deal found 2/6£581

Pick Dates

Direct flights from London to Seattle on Finnair

Mon 11/1114:50LHR - SEA

Nonstop9h 55mFinnair

Fri 15/1113:35SEA - LHR

Nonstop9h 25mFinnair

Deal found 2/6£643

Pick Dates

Wed 26/616:00LHR - SEA

Nonstop9h 45mFinnair

Tue 9/719:40SEA - LHR

Nonstop9h 20mFinnair

Deal found 2/6£888

Pick Dates

Wed 26/616:00LHR - SEA

Nonstop9h 45mFinnair

Mon 8/719:40SEA - LHR

Nonstop9h 20mFinnair

Deal found 2/6£926

Pick Dates

Last minute deals on Cheapflights

Fri 7/611:15LHR - SEA

1 stop19h 35mFinnair

Mon 10/607:06SEA - LHR

1 stop21h 39mFinnair

Deal found 1/6£597

Pick Dates

Mon 10/616:55LHR - SEA

1 stop29h 02mFinnair

Thu 13/606:02SEA - LHR

1 stop16h 23mFinnair

Deal found 1/6£618

Pick Dates

Fri 7/612:15LHR - SEA

1 stop32h 16mFinnair

Fri 14/608:30SEA - LHR

1 stop16h 30mFinnair

Deal found 1/6£621

Pick Dates

One-way Finnair flights to Seattle from London

Mon 18/1114:50LHR - SEA

Nonstop9h 55mFinnair

Deal found 1/6£552

Pick Dates

Sat 8/615:45LHR - SEA

Nonstop9h 45mFinnair

Deal found 1/6£568

Pick Dates

Sat 8/615:45LHR - SEA

Nonstop9h 45mFinnair

Deal found 2/6£569

Pick Dates

Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London with our price prediction graph.

Estimated return price

Temperature and rainfall in Seattle by month

SEA Temperature	5 - 19 °C

SEA

Temperature

5 - 19 °C

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).

Browse thousands of different options on Cheapflights for your next trip

Fly from London to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Virgin Atlantic flights from London to Seattle/Tacoma Intl

British Airways flights from London to Seattle/Tacoma Intl

Other Finnair flights from London
Browse through other Finnair flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Finnair flights from London to Dallas/Fort Worth

Finnair flights from London to Atlanta

Finnair flights from London to New York

Finnair flights from London to O'Hare Intl

Finnair flights from London to Charlotte

Finnair flights from London to Las Vegas

Finnair flights from London to Los Angeles

Finnair flights from London to Raleigh

Finnair flights from London to Nashville

Finnair flights from London to George Bush Intcntl

Finnair flights from London to Indianapolis

Finnair flights from London to Minneapolis

Finnair flights from London to St. Louis

Finnair flights from London to Miami

Finnair flights from London to Sky Harbor Intl

Finnair flights from London to Helsinki

Finnair flights from London to Kansas City

Finnair flights from London to Boston

Finnair flights from London to Memphis

Finnair flights from London to Philadelphia

Finnair flights from London to Detroit

Finnair flights from London to Hobby

Finnair flights from London to Rovaniemi

Finnair flights from London to Columbus

Finnair flights from London to Luis Munoz Marin Intl

Finnair flights from London to New Orleans

Finnair flights from London to Salt Lake City

Finnair flights from London to Chicago

Finnair flights from London to Cincinnati

Other popular destinations in North America
If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Flights to New York

Flights to Toronto

Flights to Orlando

Flights to Los Angeles

Flights to Las Vegas

Flights to Miami

Flights to Vancouver

Flights to San Francisco

Popular flights with Finnair
Browse through some of the most popular routes that Finnair offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Finnair flights from London to Dallas/Fort Worth

Finnair flights from London to Atlanta

Finnair flights from London to New York

Finnair flights from London to O'Hare Intl

Finnair flights from London to Charlotte

Finnair flights from London to Las Vegas

Finnair flights from London to Los Angeles

Finnair flights from London to Raleigh

Finnair flights from London to Nashville

Finnair flights from London to George Bush Intcntl

Finnair flights from London to Indianapolis

Finnair flights from London to Las Vegas

Finnair flights from London to Minneapolis

Finnair flights from London to Dallas/Fort Worth

Finnair flights from London to St. Louis

Finnair flights from London to Miami

Finnair flights from London to Sky Harbor Intl

Finnair flights from London to Helsinki

Finnair flights from London to Charlotte

Finnair flights from London to Helsinki

Finnair flights from London to Kansas City

Finnair flights from London to Boston

Finnair flights from London to Memphis

Finnair flights from London to Philadelphia

Finnair flights from London to Detroit

Finnair flights from London to Hobby

Finnair flights from London to Rovaniemi

Finnair flights from London to Columbus

Finnair flights from London to Nashville

See what others are saying about Finnair

Finnair

7.7

Good

1,366 reviews

Check prices

Overview

Recent reviews

5.6

Fair|Mar 2020

Nothing

Snack and some complimentary wifi or entertainment

4.0

Mediocre|Nov 2021

Had to pay £65 (~$90)to check my bag even though it was free on the outgoing flight. Had to pay surcharge for paying at check in even though I tried to correct in advance over phone and online. Kayak was no help.

10.0

Wonderful|Oct 2021

Kayak was terrible, I was told that I got 1 free checked bag, but when I got to the check-in counter I was told otherwise and had to pay for my checked bag!!!!

10.0

Wonderful|Aug 2022

Asked to put hand luggage in hold as flight full. Been waiting over an hour at Manchester airport to retrieve it

6.0

Okay|Jul 2023

One of the Flightattendant was so rude and bad. She should not work with people.

1 out of 456

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Cheapflights users flying from London to Seattle on Finnair typically fly into Seattle/Tacoma Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from London to Seattle in 2024

Find detailed information about Finnair flights from London to Seattle. Explore the options provided by Finnair to plan your journey from London to Seattle. Data last updated 2 June 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Return from

Can I get a flight from London to Seattle on Finnair for under £800?

How do most travelers feel about Finnair?

Cheapest Finnair flights from London to Seattle

Direct flights from London to Seattle on Finnair

Last minute deals on Cheapflights

One-way Finnair flights to Seattle from London

Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London with our price prediction graph.

Temperature and rainfall in Seattle by month

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

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.

Fly from London to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Other Finnair flights from London
Browse through other Finnair flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Browse through other Finnair flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Complete your trip
Complete your trip to Seattle by adding a car hire and/or hotel booking to your travel itinerary.

Complete your trip to Seattle by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines servicing London and Seattle
Choose from other airlines serving London and Seattle.

Choose from other airlines serving London and Seattle.

Other popular destinations in North America
If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Popular flights with Finnair
Browse through some of the most popular routes that Finnair offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Browse through some of the most popular routes that Finnair offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 2 June 2024.

See what others are saying about Finnair

Overview

Recent reviews

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Travel Smart

Flights

Finnair flights from London to Seattle (LON - SEA)

Cheapflights users flying from London to Seattle on Finnair typically fly into Seattle/Tacoma Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from London to Seattle in 2024

Find detailed information about Finnair flights from London to Seattle. Explore the options provided by Finnair to plan your journey from London to Seattle. Data last updated 2 June 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Return from

Can I get a flight from London to Seattle on Finnair for under £800?

How do most travelers feel about Finnair?

Cheapest Finnair flights from London to Seattle

Direct flights from London to Seattle on Finnair

Last minute deals on Cheapflights

One-way Finnair flights to Seattle from London

Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London with our price prediction graph.

Temperature and rainfall in Seattle by month

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

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.

Fly from London to Seattle on another airlineConsider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.

See what others are saying about Finnair

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from London to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on 2 June 2024.