When is the cheapest time of year to fly from London to Seattle?

Based on statistics over the past years, the lowest prices for flights from London to Seattle can be found flying in these months: .

Cheap Flights from London to Seattle

Cheapest flights from London to Seattle

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from London to Seattle. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$305

Westjet

2 transfers

16h 21m

12/10/2025

The cheapest one-way flight from London to Seattle departs on 12/10/2025, is operated by Westjet and costs $305

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from London to Seattle

The fastest flight

16h 21m

Fastest flight from London to Seattle takes 16h 21m

Direct flights

No direct flights

There are no direct flights on this route.

Distance

3215km

Timezone difference

3h

The distance between London and Seattle is 3215km (1993 miles). The time difference between London and Seattle is 3h

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from London to Seattle by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from London to Seattle

Avg Price

Airlines operating on route

On the London — Seattle route, flights are operated only by Westjet. This simplifies the choice for passengers, as all tickets come from a single trusted carrier. Our service lets you instantly check fares for upcoming dates and find the most advantageous option. The minimum ticket price starts at $305, making this trip affordable for a wide range of travelers. To save even more, we recommend booking early and keeping an eye on promotions — Westjet regularly offers special deals.

Westjet

Starting at $305

Direct Flights from London to Seattle

A direct flight is the most convenient and comfortable way to fly from London to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.

There appear to be no direct flights from London to Seattle at this time.... Well, or something went wrong on our side and we couldn't find anything

Schedule of direct flights from London to Seattle

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from London to Seattle:

Unable to find information about the schedule of direct flights from

London airports overview

London International Airport

•

YXU

10km

•

Seattle airports overview

Boeing Field International Airport

•

BFI

8km

Seattle-Tacoma International Airport

•

SEA

19km

•

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

How much is the cheapest flight ticket from London to Seattle?

The cheapest flight ticket from London to Seattle according to data for the last 48 hours costs $305

When is the best time to buy air tickets on the route London — Seattle?

Often the best time to buy tickets from London to Seattle is 2 months before departure.

How long does it take to fly from London to Seattle?

The fastest flights from London to Seattle start from 16 hours 21 minutes in the air.

Which airline can fly direct from London to Seattle?

The following airlines operate direct flights on the route London — Seattle:

Special offers and sales on air tickets from London to Seattle

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from London to Seattle

Alternative routes

Detroit ➜ Seattle•Erie ➜ Seattle•Kitchener ➜ Seattle•Windsor ➜ Seattle•Toronto ➜ Seattle•London ➜ Bellingham•London ➜ Boise•London ➜ Eugene•London ➜ Spokane•London ➜ Everett•London ➜ Kamloops•London ➜ Yakima•London ➜ Kelowna•London ➜ Abbotsford•London ➜ Calgary

•••••••••••••••••••

Cheapest one way flight

$305

Westjet

2 transfers

16h 21m

12/10/2025

The cheapest one-way flight from London to Seattle departs on 12/10/2025, is operated by Westjet and costs $305

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from London to Seattle

The fastest flight

16h 21m

Fastest flight from London to Seattle takes 16h 21m

Direct flights

No direct flights

There are no direct flights on this route.

Distance

3215km

Timezone difference

3h

The distance between London and Seattle is 3215km (1993 miles). The time difference between London and Seattle is 3h

How much is the cheapest flight ticket from London to Seattle?

The cheapest flight ticket from London to Seattle according to data for the last 48 hours costs $305

When is the best time to buy air tickets on the route London — Seattle?

Often the best time to buy tickets from London to Seattle is 2 months before departure.

How long does it take to fly from London to Seattle?

The fastest flights from London to Seattle start from 16 hours 21 minutes in the air.

Which airline can fly direct from London to Seattle?

The following airlines operate direct flights on the route London — Seattle:

Cheap Flights from London to Seattle Starting at $305

Cheapest flights from London to Seattle

Cheapest one way flight

$305

Westjet

2 transfers

16h 21m

12/10/2025

Cheapest round trip flight

—

—

—

—

—

The fastest flight

16h 21m

Direct flights

No direct flights

Distance

3215km

Timezone difference

3h

Airfare from London to Seattle by month

Airlines operating on route

Direct Flights from London to Seattle

Schedule of direct flights from London to Seattle

London airports overview

London International Airport

Seattle airports overview

Boeing Field International Airport

Seattle-Tacoma International Airport

Frequently asked questions (FAQ)

Special offers and sales on air tickets from London to Seattle

Alternative routes

Cheapest one way flight

$305

Westjet

2 transfers

16h 21m

12/10/2025

Cheapest round trip flight

—

—

—

—

—

The fastest flight

16h 21m

Direct flights

No direct flights

Distance

3215km

Timezone difference

3h

London International Airport

Boeing Field International Airport

Seattle-Tacoma International Airport