Cheap Flights from Seattle to London (SEAA - LOND)

Flight information Seattle to London

Cheapest return price last month


Direct airlines


Flights per week


Average flight time, total distance 4792 miles

9h 15min

Most popular airline last month

British Airways

London Heathrow, London Gatwick, London Stansted, London Luton and others

6 airports

Explore London

London Hotels

The Ritz London


The Soho Hotel


Charlotte Street Hotel


Flight Information

With many routes available several times a day, it’s easy to locate cheap flights from Seattle to London. Direct flights are available on FinnAir, Virgin Atlantic, Delta, British Airways, American Airlines and Aer Lingus.

International travellers flying from Seattle-Tacoma International Airport (SEA) should plan on arriving at the main entrance at least three hours before departure. Be sure to bring a current passport and any other qualifying documents. To get from the main terminal to the South Satellite within the airport, you’ll use the Satellite Transit System (STS), which is one of the oldest people movers in the United States.

If you arrive early enough, you can grab a bite to eat at the Seattle Taproom or stop and get a cup of coffee at Starbucks. For reading material on the flight, look through the best sellers at Hudson Booksellers.

Direct and indirect flights from Seattle to London land at Terminal 5 at London Heathrow Airport (LHR) although flights with one or more stops also land at London Gatwick Airport (LGW). Inside Heathrow, you’ll find free Wi-Fi, the Gordon Ramsay restaurant, and a variety of shops, including Gucci, Fortnum & Mason, and Louis Vuitton.

Upon arrival on flights from Seattle to Heathrow, go to immigration and passport control and proceed through border protection. Travel between the terminals is possible via trains, buses, or a short walk.

Climate and Time Differences

Travellers from Seattle to London both share very similar climates. Summer highs are around 25°C for both cities. Since both cities also experience a lot of rain, travellers should also be sure to pack an umbrella. August is usually the hottest month in London. On the other hand, January is the coolest, with daytime highs around 8°C. In the winter, snow is rare, and temperatures are usually mild enough for sightseeing.

London is eight hours ahead of Seattle. When arriving on cheap flights from Seattle to London, be sure to set your watch to ensure you meet appointments and arrive for dinner reservations on time.

Traveling and Dining in London

London offers a large transportation network for travellers from Seattle to London. Popular double-decker buses are a quick and inexpensive way to move around the city. They also offer sightseeing trips. The London Underground rail network, or The Tube, is one of the most popular methods of travel for locals. This network of trains takes you to and from the city centre quickly and efficiently. If you plan on travelling outside of the city, London’s Overground train network lets you go beyond The Tube. There’s also the option of metered cabs, or you can rent a bike if you prefer to explore the city quickly and get some exercise. There are car rental options available as well.

The cost of a meal in London is approximately 50 percent more expensive, especially if you're staying in central areas. Travel to outside residential neighbourhoods to save money. Choose from local favourites like bangers and mash, a popular sausage and mashed potato dish, or kippers, which is cured herring.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.