Cheap flights from London Heathrow Airport to Seattle from $343
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 Heathrow Airport to Seattle departing on 1/21. 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 Heathrow 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?
In general, January is the cheapest month to fly from London Heathrow Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $601. If you don’t want to visit Seattle in January, then you should wait until February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $617.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from London Heathrow Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $784. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $889.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from London Heathrow Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $770 when looking at flights departing at noon. Flights to Seattle are more costly in the afternoon, with an average ticket price of $848. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest London Heathrow to Seattle/Tacoma Intl flight route?
Fly from London Heathrow to Seattle/Tacoma Intl for the best London Heathrow - 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 London Heathrow Airport when booking 43 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $748 when searching 43 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $685 in the past 72 hours.
What cabin class options are available on London Heathrow to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on London Heathrow 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.
Can stopping save me money on London Heathrow Airport to Seattle flights?
You could potentially save up to 46% on your flight if you consider stops on a London Heathrow Airport to Seattle flight.
How have London Heathrow Airport to Seattle flight prices changed over time?
As of November 2024, prices for London Heathrow Airport to Seattle flights are approximately 12% more expensive when compared to flights at the same time last year.
How many flights depart from London Heathrow Airport to Seattle on average per day?
As of November 2024, 10 flights take off from London Heathrow Airport and land in Seattle each day. The most common flight departure time for this route is 3:00PM, with 81% of daily flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to Seattle on average per week?
72 flights are operational weekly from London Heathrow Airport to Seattle as of November 2024. The most popular departure day for this route is Wed, with 22% of flights per week taking off on this day.
When to book flights from London Heathrow Airport to Seattle
Cheap London Heathrow Airport to Seattle (LHR to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Seattle
How far is London Heathrow to Seattle/Tacoma Intl by plane?
London Heathrow and Seattle/Tacoma Intl are 4774.1 mi apart from one another. Flights usually cover this in 9h 55m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport?
The number of operators available for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport is 8 as of November 2024.
How old do you have to be to fly from London Heathrow Airport to Seattle/Tacoma Intl Airport?
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 London Heathrow Airport 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 London Heathrow Airport to Seattle?
Based on momondo bookings for flights between London Heathrow Airport and Seattle, the leading plane model is Boeing 787-10 Dreamliner, making up 26.58% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.03%, Airbus A330-900neo with 18.24%, and Boeing 777 with 15.04%.
What is the most popular airline from London Heathrow Airport to Seattle?
Based on momondo bookings for flights between London Heathrow Airport and Seattle, the leading airline is Delta, making up 27.77% of the total bookings. Other popular airlines include British Airways with 20.04%, American Airlines with 16.28%, and Virgin Atlantic with 13.15%.
Best airlines flying from London Heathrow Airport to Seattle
Compare and see reviews for airlines that fly from London Heathrow Airport to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $549 | Free Cancellation | Rating 7.5 663 reviews | |||
| PriceFrom $558 | Free Cancellation | Rating 7.2 553 reviews | |||
| PriceFrom $600 | Free Cancellation | Rating 6.6 6,831 reviews | |||
| PriceFrom $621 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $654 | Free Cancellation | Rating 8.0 8,755 reviews | |||
| PriceFrom $671 | Free Cancellation | Rating 7.1 1,089 reviews | |||
| PriceFrom $674 | Free Cancellation | Rating 7.8 1,349 reviews | |||
| PriceFrom $677 | Free Cancellation | Rating 7.0 2,661 reviews |
Delta Flights From London Heathrow Airport to Seattle
Delta flies from London Heathrow Airport to Seattle around 8 times per week, with 8,755 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to Seattle in the last 72 hours was $654 (round-trip), much lower than the average airfare cost of $883 for Delta flights on this route.
KLM Flights From London Heathrow Airport to Seattle
KLM (7.8/10 from 1,349 reviews) operates around 8 flights from London Heathrow Airport to Seattle in any given week. The average KLM airfare for this route is around $844, with deals from around $674 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Seattle flight searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from London to Seattle?
It is quick and easy to find London to Seattle 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 Seattle that suits you.
Can I find flights from London to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to Seattle flights to just show those with flexible booking policies.
How can momondo help me find flights from London to Seattle?
Once you have performed a search for London to Seattle 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 London to Seattle right now. Can momondo alert me if prices change?
Price alerts on flights to Seattle from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.