Cheap flights from Seattle to London from $247
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? Create a price alert to track prices.Easily compare round-trip flights from Seattle to London
Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to London by changing tabs
Find the cheapest one-way flights from Seattle to London
If you're looking for one-way flights from Seattle to London, view some of our deals below provided by Icelandair, KLM and WestJet
Search last-minute flights to London from Seattle
Find and compare round-trip flight prices for your last-minute flight from Seattle to London
Icelandair flights from Seattle to London
Our best Icelandair deals on Seattle to London flight tickets
Air Canada flights from Seattle to London
Our best Air Canada deals on Seattle to London flight tickets
Cheap Seattle to London (SEA to LON) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to London
Best Price Found | $247 |
|---|---|
Fastest flight time | 9h 20m |
Direct flights | Every day |
Airports in London | 4 airports |
How far is Seattle/Tacoma Intl to London by plane?
London is 4781.3 mi away from Seattle/Tacoma Intl. By plane, this route typically takes 9h 20m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London?
Prices for flights from Seattle/Tacoma Intl Airport to London are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to London?
The number of operators available for flights from Seattle/Tacoma Intl Airport to London is 16 as of May 2024.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Seattle to London
Compare and see reviews for airlines that fly from Seattle to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $402 | Free Cancellation | Rating 7.0 7,659 reviews | |||
| PriceFrom $517 | Free Cancellation | Rating 7.0 1,291 reviews | |||
| PriceFrom $557 | Free Cancellation | Rating 7.2 1,334 reviews | |||
| PriceFrom $572 | Free Cancellation | Rating 7.7 1,376 reviews | |||
| PriceFrom $575 | Free Cancellation | Rating 7.4 10,924 reviews | |||
| PriceFrom $582 | Free Cancellation | Rating 7.1 2,748 reviews | |||
| PriceFrom $588 | Free Cancellation | Rating 7.5 1,764 reviews | |||
| PriceFrom $598 | Free Cancellation | Rating 7.3 14,514 reviews | |||
| PriceFrom $604 | Free Cancellation | Rating 7.0 6,947 reviews | |||
| PriceFrom $625 | Free Cancellation | Rating 6.8 6,829 reviews |
Delta Flights From Seattle to London
Delta flight deals from Seattle to London start from $637 round-trip. Over the 14 Delta flights for this route in a normal week, average airfare is usually $983 round-trip - but some users have found much cheaper deals with momondo.
Alaska Airlines Flights From Seattle to London
Across 9,157 Alaska Airlines reviews on momondo, the average score is 8.0/10. Alaska Airlines flies from Seattle to London about 7 times each week, with ticket deals ranging from $1,016 to $1,263. Price data is based on momondo searches in the last 72 hours.
How do I get Price Alerts for flights from Seattle to London?
Confirm your travel details to search for the latest offers for flights from Seattle to London. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Seattle to London with momondo?
By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to London?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to London. momondo saves you time and could save you money on your trip.
Can I find flights from Seattle to London with flexible booking policies on momondo?
Yes. All flights to London from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to London?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to London.
I’m not ready to book a flight from Seattle to London right now. Can momondo alert me if prices change?
If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Seattle and alert you when they change.