Cheap flights from the United Kingdom 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 the United Kingdom 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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WestJet flights from United Kingdom to Seattle
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Scandinavian Airlines flights from United Kingdom to Seattle
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How to get the cheapest flight ticket from United Kingdom 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 United Kingdom is in January. Flight prices, which tend to average around £458, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Seattle, with average flight prices from United Kingdom averaging around £484.
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 United Kingdom. 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 United Kingdom 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.
What is the cheapest United Kingdom to Seattle/Tacoma Intl flight route?
Fly from London Heathrow to Seattle/Tacoma Intl for the best United Kingdom - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from United Kingdom when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £575 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from United Kingdom for as low as £514 on momondo.
What cabin class options are available on United Kingdom to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on United Kingdom to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from United Kingdom to Seattle/Tacoma Intl?
WestJet, Aer Lingus, and Scandinavian Airlines are the most popular carriers operating from United Kingdom to Seattle/Tacoma Intl
Which airlines fly to Seattle?
Virgin Atlantic, British Airways and Icelandair are the top three most popular airlines that fly to Seattle from United Kingdom according to our data. Virgin Atlantic is the first choice among our users, with 36% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 15 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from United Kingdom to Seattle on average per day?
As of June 2025, 19 flights take off from United Kingdom and land in Seattle each day. The most common flight departure time for this route is 16:00, with 68% of daily flights taking off in the afternoon.
How many flights depart from United Kingdom to Seattle on average per week?
137 flights are operational weekly from United Kingdom to Seattle as of June 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.
Cheap United Kingdom to Seattle flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Seattle
When did momondo last update prices for flights from United Kingdom to Seattle/Tacoma Intl Airport?
Prices for flights from United Kingdom to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United Kingdom to Seattle/Tacoma Intl Airport?
There are 15 operators available for flights from United Kingdom to Seattle/Tacoma Intl Airport as of June 2025.
How old do you have to be to fly from United Kingdom to Seattle/Tacoma Intl Airport?
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 United Kingdom to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United Kingdom to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from United Kingdom to Seattle is Airbus A330-900neo (25.99% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (25.43%), Boeing 777-300ER (16.36%), and Boeing 787-9 Dreamliner (10.01%).
Best airlines flying from United Kingdom to Seattle
Compare and see reviews for airlines that fly from United Kingdom to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £7 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom £321 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £380 | Free Cancellation | Rating 7.5 1,463 reviews | |||
| PriceFrom £387 | Free Cancellation | Rating 6.7 7,136 reviews | |||
| PriceFrom £394 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom £400 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom £401 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom £416 | Free Cancellation | Rating 7.1 9,531 reviews | |||
| PriceFrom £421 | Free Cancellation | Rating 6.6 7,011 reviews | |||
| PriceFrom £439 | Free Cancellation | Rating 8.0 7,950 reviews |
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from United Kingdom to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from United Kingdom to Seattle with flexible booking policies on momondo?
Flights from United Kingdom 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 United Kingdom to Seattle?
momondo provides multiple filters to help you find the best flight to Seattle from United Kingdom. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from United Kingdom 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 United Kingdom and alert you when they change.