Cheap flights from Seattle to the United Kingdom from £144
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 the United Kingdom departing on 15/10. 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 Seattle to United Kingdom
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 United Kingdom?
The cheapest month to fly to United Kingdom from Seattle is in October. Flight prices, which tend to average around £498, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around £501.
What is the cheapest day to depart on your flight to United Kingdom?
The cheapest day to depart from Seattle to United Kingdom is on a Monday. Travellers who choose to depart for United Kingdom on a Monday will often find tickets for as low as £609. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to United Kingdom for around £822.
What is the cheapest time of day to depart on your flight to United Kingdom?
The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £658. Try not to purchase tickets in the morning because they tend to be around £1,024. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Seattle/Tacoma Intl to United Kingdom flight route?
Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - United Kingdom flight prices
How far in advance should I book a flight to United Kingdom?
You are more likely to see cheaper flights to United Kingdom from Seattle when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £614 when searching 9 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Seattle for as low as £585 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to United Kingdom flights?
There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to United Kingdom 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 Seattle/Tacoma Intl to United Kingdom?
Icelandair and WestJet are the most popular carriers operating from Seattle/Tacoma Intl to United Kingdom
Which airlines fly to United Kingdom?
Virgin Atlantic, British Airways and Icelandair are the top three most popular airlines that fly to United Kingdom from Seattle according to our data. Virgin Atlantic is the first choice among our users, with 42% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 6 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to United Kingdom on average per day?
21 flights are operational daily from Seattle to United Kingdom as of May 2025. The most popular departure time for this route is 20:00, with 50% of flights per day taking off in the afternoon.
How many flights depart from Seattle to United Kingdom on average per week?
As of May 2025, there are 147 flights per week flying from Seattle to United Kingdom. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.
Cheap Seattle to United Kingdom flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to United Kingdom
Best price found | £144 |
|---|---|
Fastest flight time | 9h 20m |
Direct flights | Every day |
Airports in United Kingdom | 4 airports |
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to United Kingdom?
Prices for flights from Seattle/Tacoma Intl Airport to United Kingdom were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United Kingdom?
As of May 2025, there are 6 operators available to choose from for flights from Seattle/Tacoma Intl Airport to United Kingdom.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to United Kingdom?
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 United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The required travel and health documents for your United Kingdom 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 United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Seattle to United Kingdom?
momondo data reveals that the most frequently booked plane model on the route from Seattle to United Kingdom is Boeing 787-10 Dreamliner, representing 31.61% of all bookings. The subsequent popular models are Airbus A330-900neo at 31.43%, Boeing 777 at 13.27%, and Boeing 777-300 at 9.10%.
Best airlines flying from Seattle to United Kingdom
Compare and see reviews for airlines that fly from Seattle to United Kingdom with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £362 | Free Cancellation | Rating 7.0 487 reviews | |||
| PriceFrom £394 | Free Cancellation | Rating 6.6 6,845 reviews | |||
| PriceFrom £431 | Free Cancellation | Rating 7.0 2,701 reviews | |||
| PriceFrom £440 | Free Cancellation | Rating 6.7 7,045 reviews | |||
| PriceFrom £449 | Free Cancellation | Rating 7.4 643 reviews | |||
| PriceFrom £495 | Free Cancellation | Rating 7.8 1,334 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to United Kingdom?
Finding the right flight to United Kingdom from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.
Can I find flights from Seattle to United Kingdom with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Seattle to United Kingdom flights to just show those with flexible booking policies.
How can momondo help me find flights from Seattle to United Kingdom?
Once you have performed a search for Seattle to United Kingdom flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Seattle to United Kingdom right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Seattle to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.