£267 Cheap Flights from Seattle (SEA) to London (LGW)

View £267 flight on Mon, 31 Aug 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £267 for one-way flights and £588 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Condor
Sun, 11 Oct - Sat, 17 Oct
SEA
Seattle
LGW
London
£588 Return, found 3 days ago
£588
Return
found 3 days ago
Select Condor flight, departing Sun, 11 Oct from Seattle to London, returning Sat, 17 Oct, priced at £588 found 3 days ago
Condor
Mon, 10 Aug - Wed, 9 Sept
SEA
Seattle
LGW
London
£597 Return, found 4 days ago
£597
Return
found 4 days ago
Select Condor flight, departing Mon, 10 Aug from Seattle to London, returning Wed, 9 Sept, priced at £597 found 4 days ago
Condor
Mon, 5 Oct - Mon, 19 Oct
SEA
Seattle
LGW
London
£598 Return, found 1 day ago
£598
Return
found 1 day ago
Select Condor flight, departing Mon, 5 Oct from Seattle to London, returning Mon, 19 Oct, priced at £598 found 1 day ago
Condor
Sun, 7 Jun - Sat, 5 Sept
SEA
Seattle
LGW
London
£606 Return, found 4 days ago
£606
Return
found 4 days ago
Select Condor flight, departing Sun, 7 Jun from Seattle to London, returning Sat, 5 Sept, priced at £606 found 4 days ago
Condor
Mon, 10 Aug - Thu, 10 Sept
SEA
Seattle
LGW
London
£615 Return, found 4 days ago
£615
Return
found 4 days ago
Select Condor flight, departing Mon, 10 Aug from Seattle to London, returning Thu, 10 Sept, priced at £615 found 4 days ago
Condor
Thu, 14 May - Thu, 21 May
SEA
Seattle
LGW
London
£616 Return, found 3 hours ago
£616
Return
found 3 hours ago
Select Condor flight, departing Thu, 14 May from Seattle to London, returning Thu, 21 May, priced at £616 found 3 hours ago
Icelandair
Thu, 8 Oct - Thu, 15 Oct
SEA
Seattle
LGW
London
£621 Return, found 4 days ago
£621
Return
found 4 days ago
Select Icelandair flight, departing Thu, 8 Oct from Seattle to London, returning Thu, 15 Oct, priced at £621 found 4 days ago
American Airlines
Tue, 8 Sept - Wed, 16 Sept
SEA
Seattle
LGW
London
£666 Return, found 2 days ago
£666
Return
found 2 days ago
Select American Airlines flight, departing Tue, 8 Sept from Seattle to London, returning Wed, 16 Sept, priced at £666 found 2 days ago
Swiss International Air Lines
Tue, 18 Aug - Wed, 26 Aug
SEA
Seattle
LGW
London
£670 Return, found 1 hour ago
£670
Return
found 1 hour ago
Select Swiss International Air Lines flight, departing Tue, 18 Aug from Seattle to London, returning Wed, 26 Aug, priced at £670 found 1 hour ago
Air France
Sun, 9 Aug - Wed, 26 Aug
SEA
Seattle
LGW
London
£672 Return, found 17 hours ago
£672
Return
found 17 hours ago
Select Air France flight, departing Sun, 9 Aug from Seattle to London, returning Wed, 26 Aug, priced at £672 found 17 hours 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 £672
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from £672
Select flight to London City LCY. Closest option available. Average driving time to city centre is 21 minutes. Flights from £1,153
LCY
London City
Closest
Average driving time to city centre21 min
Flights from £1,153

Frequently asked questions

How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick), 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.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
There are approximately 47 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Gatwick (LGW). Some common connection points include O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), and Charlotte-Douglas Intl. (CLT).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
The earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) typically departs at approximately 12:05 AM local time. This service is operated by American Airlines and British Airways. This is a seasonal service active in March. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to London Gatwick (LGW) on a Thursday, with around 53 flights available. This gives you a good selection of options for your journey. Major airlines on this route include United Airlines, American Airlines, and Delta Air Lines.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to London Gatwick (LGW) are in the late evening, from 9pm to midnight. About 25% of passengers prefer this time. Many major carriers, including American Airlines, British Airways and Delta, offer flights during this window. This timing works well because you can maximize your day in Seattle before your evening flight, and you'll arrive in London in the morning, ready to start your day.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
A flight from SEA to LGW with a layover takes around 13 hours 20 minutes, with the route covering approximately 4,811 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
Select the "Business class" and "First class" filters when looking for SEA to 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 from Seattle - Tacoma Intl. (SEA)?
When traveling from Seattle - Tacoma Intl. (SEA) to London, you can fly into Heathrow (LHR), London City (LCY), London Intl. (YXU) and Gatwick (LGW). Some flights may connect through major hubs like Salt Lake City Intl. (SLC), O'Hare Intl. (ORD), Vancouver Intl. (YVR) 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-Seattle - Tacoma Intl.) to London (LGW-Gatwick)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LGW-Gatwick) 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 France, American Airlines, British Airways, Condor, Delta, Iberia, Icelandair, JetBlue Airways, KLM, Singapore Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Virgin Atlantic
Return price
£588
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 £588 and range up to £672.  

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

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