$510 Cheap Flights from Seattle (SEA) to London (LCY)

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Cheap Flights from Seattle to London (SEA-LCY)

Prices were available within the past 7 days and start at $510 for one-way flights and $687 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Swiss International Air Lines
Swiss International Air Lines
Swiss International Air Lines
Air Canada
Swiss International Air Lines
Air Canada
Virgin Atlantic
Air Canada
Lufthansa
Flights from Seattle (SEA) to London (LCY)
Origin airport
Seattle - Tacoma Intl.
Destination airport
London City
Airlines serving
Aer Lingus, British Airways, Delta, ITA Airways, KLM, Lufthansa, Swiss International Air Lines, Virgin Atlantic
Roundtrip price
$687
Distance
4797 mi

Seattle to London Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to London offer the perfect respite. Not only does exploring London provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Seattle to London may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of London are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to London more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to London is $510 now!

Frequently asked questions

How much is a one-way flight from Sea-Tac Airport to London City Airport?
Make your next booking with Expedia and you could bag one-way Seattle flights to London from just $646. This was the cheapest price found for this journey departing within the next three months — an British Airways flight, leaving from Seattle - Tacoma Intl. Airport (SEA) on July 29 2024 and landing at London City Airport. The price was last updated on May 3 2024 and has not changed since. Can’t wait to snap up your own bargain? Awesome offers are only a few clicks away.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to London City Airport (LCY) last minute?
Booking your trip from SEA to London City Airport (LCY) last minute could save you some dough if you stumble on a terrific deal. However, tickets don’t usually get cheaper as the departure date nears. If you wait around, flights could also be booked solid or the best seats gone (that could mean the middle seat!). If you’d rather play it safe, book well in advance of your departure date. In fact, Expedia has some of the biggest deals up to a year in advance. If your favorite carrier hasn’t released tickets yet, check back regularly as deals are updated on Expedia constantly.
What is the cheapest airline flying from Sea-Tac Airport to London City Airport in the next 90 days?
The cheapest carrier traveling from Seattle to London found on Expedia is British Airways, with fares starting at $646. This price is based on fares found on Expedia with a departure date within the next 90 days. The flight departs Sea-Tac Airport on July 29 2024 and touches down at London City Airport (LCY). Pricing information was updated on May 3 2024 and has not changed since.
What airports do you fly into for London from Seattle?
From Seattle, you can fly into London via London City Airport (LCY), Heathrow Airport (LHR) and Gatwick Airport (LGW). Determine which airport is the best option for you before making your decision. If you pick London City Airport (LCY), it’s roughly 8 mi east of the center of the city. Use the money you save when booking your ticket with Expedia to discover the city’s top attractions, such as Buckingham Palace and Big Ben.
Can I change the date of my flight from SEA to London City Airport (LCY)?
Plans can get upended, so Expedia is here to help make amending your flight as easy as possible. To start, find your Sea-Tac Airport to London City Airport (LCY) itinerary through the Expedia Trips portal and check the fare conditions and rules about what changes can be made. If you purchased your ticket in the last 24 hours, some airlines will let you cancel without charge and book new flights. If you booked your fare more than 24 hours ago, get in touch with us through our Customer Service portal to run through your options.
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