A cityscape with modern skyscrapers and a historic building with a dome.

£227 Cheap Flights from Seattle (SEA) to London (LGW)

View £227 flight on Sat, 23 Jan 2027Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Gatwick Airport (LGW)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle (SEA) to London (LGW)

Prices were available within the past 7 days and start at £227 for one-way flights and £551 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, 7 Oct - Fri, 23 Oct
SEA
Seattle
LGW
London
£551 Return, found 5 days ago
£551
Return
found 5 days ago
Select Icelandair flight, departing Wed, 7 Oct from Seattle to London, returning Fri, 23 Oct, priced at £551 found 5 days ago
Icelandair
Wed, 7 Oct - Wed, 21 Oct
SEA
Seattle
LGW
London
£552 Return, found 1 day ago
£552
Return
found 1 day ago
Select Icelandair flight, departing Wed, 7 Oct from Seattle to London, returning Wed, 21 Oct, priced at £552 found 1 day ago
Icelandair
Tue, 22 Sept - Tue, 20 Oct
SEA
Seattle
LGW
London
£556 Return, found 3 days ago
£556
Return
found 3 days ago
Select Icelandair flight, departing Tue, 22 Sept from Seattle to London, returning Tue, 20 Oct, priced at £556 found 3 days ago
Icelandair
Sat, 23 Jan - Mon, 1 Feb
SEA
Seattle
LGW
London
£558 Return, found 1 day ago
£558
Return
found 1 day ago
Select Icelandair flight, departing Sat, 23 Jan from Seattle to London, returning Mon, 1 Feb, priced at £558 found 1 day ago
Icelandair
Sat, 7 Nov - Mon, 23 Nov
SEA
Seattle
LGW
London
£558 Return, found 5 days ago
£558
Return
found 5 days ago
Select Icelandair flight, departing Sat, 7 Nov from Seattle to London, returning Mon, 23 Nov, priced at £558 found 5 days ago
Icelandair
Sun, 11 Apr - Wed, 14 Apr
SEA
Seattle
LGW
London
£559 Return, found 8 hours ago
£559
Return
found 8 hours ago
Select Icelandair flight, departing Sun, 11 Apr from Seattle to London, returning Wed, 14 Apr, priced at £559 found 8 hours ago
Condor
Sun, 1 Nov - Mon, 9 Nov
SEA
Seattle
LGW
London
£564 Return, found 2 days ago
£564
Return
found 2 days ago
Select Condor flight, departing Sun, 1 Nov from Seattle to London, returning Mon, 9 Nov, priced at £564 found 2 days ago
Virgin Atlantic
Sun, 11 Apr - Wed, 14 Apr
SEA
Seattle
LGW
London
£577 Return, found 8 hours ago
£577
Return
found 8 hours ago
Select Virgin Atlantic flight, departing Sun, 11 Apr from Seattle to London, returning Wed, 14 Apr, priced at £577 found 8 hours ago
American Airlines
Tue, 17 Nov - Tue, 24 Nov
SEA
Seattle
LGW
London
£632 Return, found 5 days ago
£632
Return
found 5 days ago
Select American Airlines flight, departing Tue, 17 Nov from Seattle to London, returning Tue, 24 Nov, priced at £632 found 5 days ago
Iberia
Tue, 17 Nov - Tue, 24 Nov
SEA
Seattle
LGW
London
£636 Return, found 5 days ago
£636
Return
found 5 days ago
Select Iberia flight, departing Tue, 17 Nov from Seattle to London, returning Tue, 24 Nov, priced at £636 found 5 days ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from £715
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from £715

Find the cheapest month to fly from Seattle (SEA) to London (LGW)

January is typically the cheapest month to fly

From £385 - £1,079 per traveller.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) cost?
You can find cheap one-way flights from £227 and cheap return flights from £551 SEA to LGW with Expedia. One-way flights typically cost between £459 and £3122. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when SEA to LGW ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
The cheapest months to fly from SEA to LGW are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
Enter SEA to LGW and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seattle, WA (SEA) to London (LGW)?
To find a cheap flight from Seattle, WA (SEA) to London (LGW), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Gatwick (LGW) typically departs around 12:05 AM. This service is operated by American Airlines and British Airways. This is a seasonal service, active only in March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
There are no nonstop flights from Seattle - Tacoma Intl. (SEA) to London (LGW-Gatwick). For connecting flights, a one-stop journey typically takes around 13 hours 18 minutes. If you have two or more stops, your travel time will be longer, usually around 19 hours 30 minutes. The distance covered on this route is approximately 7742 kilometres. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Seattle, WA (SEA) to London (LGW)?
Select the "Business class" and "First class" filters when looking for Seattle, WA (SEA) to London (LGW) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London (LGW) from Seattle, WA (SEA)?
If you're planning to travel to London from Seattle - Tacoma Intl. (SEA), you can fly directly into Gatwick (LGW). Some flights may connect through major hubs like Dallas-Fort Worth Intl. (DFW), Charlotte-Douglas Intl. (CLT), or O'Hare Intl. (ORD) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA) to London (LGW)?
If you booked your Seattle, WA (SEA) to London (LGW) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Gatwick
Airlines serving
Air Europa, Air France, American Airlines, British Airways, Condor, Delta, Iberia, Icelandair, JetBlue Airways, KLM, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Virgin Atlantic
Return price
£551
Distance
7697 km

Book with confidence

Compare flights from Seattle to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Gatwick in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Gatwick.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Gatwick (LGW)

The easiest way to view the best deals on flights from Seattle to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Gatwick start at just £551 and range up to £636.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and London
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Gatwick for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to London easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.