Cheap flights from Seattle to London Heathrow Airport from C$ 351
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 London Heathrow Airport departing on 16/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Early arrival? Instantly customize your resultsTrusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? Create a price alert to track prices.Easily compare round-trip flights from Seattle to London Heathrow Airport
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to London Heathrow Airport by changing tabs
Find the cheapest one-way flights from Seattle to London Heathrow Airport
If you're looking for one-way flights from Seattle to London Heathrow Airport, view some of our deals below provided by Delta, Icelandair and WestJet
Search last-minute flights to London Heathrow Airport from Seattle
Find and compare round-trip flight prices for your last-minute flight from Seattle to London Heathrow Airport
Best airlines flying from Seattle to London Heathrow Airport
Compare and see reviews for airlines that fly from Seattle to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 671 | Free Cancellation | Rating 7.1 1,330 reviews | |||
| PriceFrom C$ 707 | Free Cancellation | Rating 7.5 1,796 reviews | |||
| PriceFrom C$ 749 | Free Cancellation | Rating 7.1 2,753 reviews | |||
| PriceFrom C$ 830 | Free Cancellation | Rating 7.7 1,376 reviews | |||
| PriceFrom C$ 868 | Free Cancellation | Rating 7.7 744 reviews | |||
| PriceFrom C$ 906 | Free Cancellation | Rating 8.0 10,861 reviews | |||
| PriceFrom C$ 959 | Free Cancellation | Rating 6.8 6,873 reviews |
Delta Flights From Seattle to London Heathrow Airport
Delta operates around 14 flights from Seattle to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been C$ 785, but momondo users have found Delta deals from Seattle to London Heathrow Airport from as low as C$ 659 round-trip. Delta has been scored 8.0/10 in 10,861 reviews.
Finnair Flights From Seattle to London Heathrow Airport
Another popular option for Seattle to London Heathrow Airport flights is Finnair (7.7/10, 1,376 ratings). Finnair flies from Seattle to London Heathrow Airport around 13 times per week, with deals starting from C$ 603 round-trip and rising to an average price of around C$ 697.
Icelandair flights from Seattle to London Heathrow Airport
Our best Icelandair deals on Seattle to London Heathrow Airport flight tickets
Delta flights from Seattle to London Heathrow Airport
Our best Delta deals on Seattle to London Heathrow Airport flight tickets
How to get the cheapest flight ticket from Seattle to London Heathrow Airport
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 from Seattle to London Heathrow Airport?
February. The cheapest time of year to fly to London Heathrow Airport from Seattle is February. The most expensive is June.
What is the cheapest day to depart Seattle for London Heathrow Airport?
Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Wednesday
When is the cheapest time to fly from Seattle to London Heathrow Airport?
In the evening. Seattle to London Heathrow Airport flights are approximately 26% more expensive in the morning than in the evening
What is the cheapest airline that flies to London Heathrow Airport from Seattle?
Finnair. Air France, Delta, and Finnair are the most popular carriers operating from Seattle to London Heathrow Airport
How far in advance should you book Seattle to London Heathrow Airport flights?
47 days before. The cheapest time to buy a flight from Seattle to London Heathrow Airport is approximately 47 days to departure
How many flights depart from Seattle to London Heathrow Airport on average per day?
As of May 2024, there are 19 flights per week flying from Seattle to London Heathrow Airport. The most common time of day flights depart is 6:00p.m., with 60% of flights taking off in the evening.
How many flights depart from Seattle to London Heathrow Airport on average per week?
The number of flights available between Seattle and London Heathrow Airport is 135 per week as of May 2024. The most frequent departure day is Sunday, with 15% of weekly flights leaving on this day.
Can stopping save me money on Seattle to London Heathrow Airport flights?
You could potentially save up to 11% on your flight if you consider stops on a Seattle to London Heathrow Airport flight.
Cheap Seattle to London Heathrow Airport (SEA to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to London Heathrow Airport
Best price found | C$ 351 |
|---|---|
Fastest flight time | 9h 20m |
Direct flights | Every day |
How far is Seattle/Tacoma Intl to London Heathrow by plane?
London Heathrow is 7683.2 km away from Seattle/Tacoma Intl. A reasonable flight in good conditions will take 9h 20m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London Heathrow Airport?
Prices for flights from Seattle/Tacoma Intl Airport to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to London Heathrow Airport?
As of May 2024, there are 7 operators available to choose from for flights from Seattle/Tacoma Intl Airport to London Heathrow Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Heathrow 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 Seattle/Tacoma Intl Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to London?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to London. momondo saves you time and could save you money on your trip.
Can I find flights from Seattle to London with flexible booking policies on momondo?
All flight searches from Seattle to London on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Seattle to London?
Once all potential Seattle to London 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 Seattle to London right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Seattle to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.