Cheap flights from London Gatwick Airport to Seattle from £219
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Seattle departing on 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from London Gatwick Airport to Seattle
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 Seattle?
The cheapest month to fly to Seattle from London Gatwick Airport is in April. Flight prices, which tend to average around £414, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Seattle, with average flight prices from London Gatwick Airport averaging around £429.
What is the cheapest day to depart on your flight to Seattle?
According to our data, Tuesday is the cheapest day to fly to Seattle from London Gatwick Airport. The lowest ticket price found for a Tuesday departure recently was £600. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £731.
What is the cheapest time of day to depart on your flight to Seattle?
According to our data, the cheapest time of day to fly to Seattle is in the evening. momondo users have found flights departing from London Gatwick Airport to Seattle in the evening for as low as £519. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive, with an average ticket price of £648.
How have London Gatwick Airport to Seattle flight prices changed over time?
When to book flights from London Gatwick Airport to Seattle
Cheap London Gatwick Airport to Seattle (LGW to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Seattle
How far is London Gatwick to Seattle/Tacoma Intl by plane?
The straight-line distance from London Gatwick to Seattle/Tacoma Intl is 4798.7 mi. A reasonable flight in good conditions will take 12h 50m.
When did momondo last update prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?
There are 2 operators available for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport as of June 2025.
How old do you have to be to fly from London Gatwick Airport to Seattle/Tacoma Intl 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 London Gatwick Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from London Gatwick Airport to Seattle?
Based on momondo bookings for flights between London Gatwick Airport and Seattle, the leading airline is Icelandair, making up 89% of the total bookings. Other popular airlines include Virgin Atlantic with 11%.
Best airlines flying from London Gatwick Airport to Seattle
Compare and see reviews for airlines that fly from London Gatwick Airport to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £321 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £448 | Free Cancellation | Rating 7.4 652 reviews |
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Why should I use momondo to find a flight deal from London to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from London.
Can I find flights from London to Seattle with flexible booking policies on momondo?
Flights from London to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Seattle?
Once all potential London to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from London and alert you when they change.