Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise 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? to track prices.Find the cheapest flights from Seattle to London
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Icelandair flights from Seattle to London Gatwick Airport
Our best Icelandair deals on Seattle to London Gatwick Airport flight tickets
SWISS flights from Seattle to London Gatwick Airport
Our best SWISS deals on Seattle to London Gatwick Airport flight tickets
See travel insights to London from
How to get the cheapest flight ticket from Seattle to London Gatwick Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London Gatwick Airport?
The cheapest month to fly to London Gatwick Airport from Seattle is in January. Flight prices, which tend to average around £428, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in January, then you should wait until April to fly from Seattle, when ticket prices are also cheap, with an average price of £445.
How far in advance should I book a flight to London Gatwick Airport?
You are more likely to see cheaper flights to London Gatwick Airport from Seattle when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to London Gatwick Airport for around £569 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Gatwick Airport from Seattle for as low as £407 on momondo.
When to book flights from Seattle to London Gatwick Airport
Cheap Seattle to London Gatwick Airport (SEA to LGW) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to London Gatwick Airport
How far is Seattle/Tacoma Intl to London Gatwick by plane?
The straight-line distance from Seattle/Tacoma Intl to London Gatwick is 4798.7 mi. 11h 30m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport?
Prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport are refreshed on a daily basis.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Gatwick Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Gatwick Airport.
What documentation or ID do you need to fly to London Gatwick Airport?
The travel and health documents you'll need for your trip to London Gatwick Airport 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 Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Seattle to London?
It is quick and easy to find Seattle to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.
Can I find flights from Seattle to London with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Seattle to London flights to just show those with flexible booking policies.
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?
Yes momondo offers price alerts on flights to London from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.