What is the cheapest flight from Seattle to London Gatwick Airport?

In the last 3 days, the lowest price for a flight from Seattle to London Gatwick Airport was C$ 521 for a one-way ticket and C$ 753 for a round-trip. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from Seattle to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Seattle to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Seattle is likely to change within 7 days, so travellers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Seattle to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Seattle with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

Which airlines provide the cheapest flights from Seattle to London?

In the past 3 days, the cheapest round-trip tickets from Seattle to London were found on Icelandair (C$ 753) and SWISS (C$ 889).

Which airlines provide the cheapest flights from Seattle to London?

In the past 3 days, the cheapest round-trip tickets from Seattle to London were found on Icelandair (C$ 753) and SWISS (C$ 889).

C$ 521 CHEAP FLIGHTS from Seattle to London Gatwick (SEA - LGW)

SEA - LGW

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Flight Deals

Cheap Flights from Seattle to London (SEA-LGW)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Seattle to London

Tue, 24 Mar - Tue, 31 Mar

3:35 p.m. - 10:55 a.m.SEA-LGW

12h 20m1 stop

3:40 p.m. - 8:45 p.m.LGW-SEA

13h 05m1 stop

C$ 753Icelandair

Find Deal

Mon, 24 Nov - Mon, 8 Dec

2:35 p.m. - 10:55 a.m.SEA-LGW

12h 20m1 stop

11:55 a.m. - 5:00 p.m.LGW-SEA

13h 05m1 stop

C$ 755Icelandair

Find Deal

Tue, 24 Mar - Thu, 2 Apr

3:35 p.m. - 10:55 a.m.SEA-LGW

12h 20m1 stop

3:40 p.m. - 8:45 p.m.LGW-SEA

13h 05m1 stop

C$ 776Icelandair

Find Deal

Sat, 4 Apr - Sat, 11 Apr

7:00 p.m. - 2:40 p.m.SEA-LGW

11h 40m1 stop

3:40 p.m. - 5:50 p.m.LGW-SEA

34h 10m1 stop

C$ 778Icelandair

Find Deal

Wed, 3 Dec - Tue, 20 Jan

3:25 p.m. - 5:50 p.m.SEA-LGW

18h 25m2 stops

6:40 p.m. - 9:12 p.m.LGW-SEA

34h 32m2 stops

C$ 889SWISS

Find Deal

Wed, 28 Jan - Wed, 4 Feb

7:00 a.m. - 6:00 a.m.SEA-LGW

15h 00m1 stop

1:00 p.m. - 10:26 a.m.LGW-SEA

29h 26m1 stop

C$ 915Multiple Airlines

Find Deal

Wed, 3 Dec - Tue, 20 Jan

3:25 p.m. - 5:50 p.m.SEA-LGW

18h 25m2 stops

6:40 p.m. - 9:12 p.m.LGW-SEA

34h 32m2 stops

C$ 957SWISS

Find Deal

Sun, 16 Nov - Tue, 18 Nov

11:07 a.m. - 6:00 a.m.SEA-LGW

34h 53m1 stop

1:00 p.m. - 2:50 p.m.LGW-SEA

33h 50m1 stop

C$ 1,000Multiple Airlines

Find Deal

Fri, 20 Mar - Mon, 6 Apr

8:00 p.m. - 9:20 a.m.SEA-LGW

30h 20m1 stop

5:15 p.m. - 5:15 p.m.LGW-SEA

32h 00m1 stop

C$ 1,033Turkish Airlines

Find Deal

Mon, 8 Dec - Mon, 15 Dec

7:00 p.m. - 4:10 p.m.SEA-LGW

37h 10m1 stop

6:20 a.m. - 5:05 p.m.LGW-SEA

18h 45m1 stop

C$ 1,035Turkish Airlines

Find Deal

When to travel

January

Cheapest • 15% price drop

December

Most popular

Good to know

Cheapest round-trip

C$ 753

Overall average: C$ 815

Icelandair

Tue 24/3Tue 31/3

SEA - LGW • 1 stop

Cheapest one-way flights

C$ 521

Typical prices: C$ 605-C$ 1,209

Multiple Airlines

Mon 16/3

SEA - LGW • 1 stop

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to London!

Booking Insights

KAYAK's insights & trends for Seattle to London flights

Get data-powered insights and trends into flights from Seattle to London to help you find the cheapest flights, the best time to fly and much more.

Prices

Airlines

What is the cheapest month to fly from Seattle to London Gatwick Airport?

The cheapest month for flights from Seattle to London Gatwick Airport is January, where tickets cost C$ 787 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is C$ 1,228 and C$ 1,026 respectively.

Find deals

Low season	March
High season	December
Cheapest flight	C$ 521

Best time to beat the crowds (13% less expensive on average)

Most popular time to fly (5% more expensive on average)

Flight from Seattle to London

When to book flights from Seattle to London

Are your dates flexible? Find out the best times to travel from Seattle to London based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Seattle to London Gatwick Airport?
In the last 3 days, the lowest price for a flight from Seattle to London Gatwick Airport was C$ 521 for a one-way ticket and C$ 753 for a round-trip.
Which aircraft models fly most regularly from Seattle to London?
We unfortunately don’t have that data for this specific route.
How does KAYAK find such low prices on flights from Seattle to London?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Seattle to London?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Seattle with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Seattle to London

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on your arrival and departure airports

Seattle (SEA)

Gatwick (LGW)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

SEA - LGW

C$ 521 Find Cheap Flights from Seattle to London

KAYAK searches hundreds of travel sites at once for deals on flights to London Gatwick Airport

Cheap Flights from Seattle to London (SEA-LGW)

Recent round-trip flight deals from Seattle to London

Recent one-way flight deals from Seattle to London

Recent last minute flight deals from Seattle to London

Everything you should know

KAYAK's insights & trends for Seattle to London flights

Get data-powered insights and trends into flights from Seattle to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to London Gatwick Airport?

The cheapest month for flights from Seattle to London Gatwick Airport is January, where tickets cost C$ 787 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is C$ 1,228 and C$ 1,026 respectively.

Which airlines provide the cheapest flights from Seattle to London?

In the past 3 days, the cheapest round-trip tickets from Seattle to London were found on Icelandair (C$ 753) and SWISS (C$ 889).

Good to know

When to book flights from Seattle to London

FAQs for booking Seattle to London flights

What is the cheapest flight from Seattle to London Gatwick Airport?

In the last 3 days, the lowest price for a flight from Seattle to London Gatwick Airport was C$ 521 for a one-way ticket and C$ 753 for a round-trip.

Which aircraft models fly most regularly from Seattle to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Seattle to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from Seattle to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Seattle with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Seattle to London

Information on your arrival and departure airports

Cabin class types available on flights to London

Complete your trip to London with a hotel stay or car rental

Find direct flights to and from Seattle and London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London