Cheap flights from Seattle to the United Kingdom from $212
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 10/18. 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?
In general, January is the cheapest month to fly from Seattle to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $670. If you aren’t able to travel to United Kingdom during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $670.
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 Tuesday when prices can be found for as low as $822. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $955.
What is the cheapest time of day to depart on your flight to United Kingdom?
According to our data, the cheapest time of day to fly to United Kingdom is in the evening. momondo users have found flights departing from Seattle to United Kingdom in the evening for as low as $872. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the morning, with an average ticket price of $980. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
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 $812 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 $740 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to United Kingdom flights?
There are 4 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
What airlines fly to United Kingdom?
British Airways, Delta and Icelandair are the top three most popular airlines that fly to United Kingdom from Seattle according to our data. British Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 17 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?
The number of flights available between Seattle and United Kingdom is 21 per day as of June 2025. The most frequent departure time is 8:00PM, with 50% of daily flights leaving in the afternoon.
How many flights depart from Seattle to United Kingdom on average per week?
As of June 2025, there are 148 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 | $212 |
|---|---|
Fastest flight time | 9h 20m |
Direct flights | Every day |
Airports in United Kingdom | 7 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 refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United Kingdom?
The number of operators available for flights from Seattle/Tacoma Intl Airport to United Kingdom is 17 as of June 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to United Kingdom?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The necessary travel and health documents for your United Kingdom 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 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 25.85% of all bookings. The subsequent popular models are Boeing 777-300ER at 22.26%, Airbus A330-900neo at 22.01%, and Boeing 777 at 9.42%.
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 $378 | Free Cancellation | Rating 6.7 7,136 reviews | |||
| PriceFrom $500 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $532 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom $550 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $568 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $583 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $584 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $585 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $595 | Free Cancellation | Rating 7.4 652 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to United Kingdom?
It is quick and easy to find Seattle to United Kingdom 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 United Kingdom that suits you.
Can I find flights from Seattle to United Kingdom with flexible booking policies on momondo?
All flight searches from Seattle to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Seattle to United Kingdom?
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 United Kingdom.
I’m not ready to book a flight from Seattle to United Kingdom right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Seattle to United Kingdom now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United Kingdom and let you know when they change.