Cheap flights from Seattle to London Heathrow Airport from $224
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 11/27. 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 and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Seattle to London
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Cheap bus & train deals from Seattle to London
All round-trip flight deals to London
Icelandair flights from Seattle to London Heathrow Airport
Our best Icelandair deals on Seattle to London Heathrow Airport flight tickets
Finnair flights from Seattle to London Heathrow Airport
Our best Finnair 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?
November. The cheapest time of year to fly to London Heathrow Airport from Seattle is November. Most expensive is June
What is the cheapest day to depart Seattle for London Heathrow Airport?
Sunday. The cheapest day of the week is typically Sunday. The most expensive is typically Thursday
When is the cheapest time to fly from Seattle to London Heathrow Airport?
In the afternoon. Seattle to London Heathrow Airport flights are approximately 12% more expensive in the morning than in the afternoon
What is the cheapest airline that flies to London Heathrow Airport from Seattle?
Icelandair. Icelandair, Lufthansa, 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?
44 days before. The cheapest time to buy a flight from Seattle to London Heathrow Airport is approximately 44 days to departure
How many flights depart from Seattle to London Heathrow Airport on average per day?
As of October 2024, 6 flights take off from Seattle and land in London Heathrow Airport each day. The most common flight departure time for this route is 7:00PM, with 89% of daily flights taking off in the evening.
How many flights depart from Seattle to London Heathrow Airport on average per week?
42 flights are operational weekly from Seattle to London Heathrow Airport as of October 2024. The most popular departure day for this route is Wednesday, with 29% of flights per week taking off on this day.
What cabin class options are available on Seattle to London Heathrow Airport flights?
There are 3 cabin classes available to choose from on Seattle to London Heathrow Airport 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 Seattle to London Heathrow Airport flights?
You could potentially save up to 42% on your flight if you consider stops on a Seattle to London Heathrow Airport flight.
How have Seattle to London Heathrow Airport flight prices changed over time?
As of October 2024, prices for Seattle to London Heathrow Airport flights are approximately 32% cheaper when compared to flights at the same time last year.
When to book flights from Seattle to London Heathrow Airport
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
How far is Seattle/Tacoma Intl to London Heathrow by plane?
The straight-line distance from Seattle/Tacoma Intl to London Heathrow is 4774.1 mi. 9h 20m is a normal flight duration for this route.
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 refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to London Heathrow Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to London Heathrow Airport is 14 as of October 2024.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Heathrow 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 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.
What is the most popular plane model from Seattle to London Heathrow Airport?
Based on momondo bookings for flights between Seattle and London Heathrow Airport, the leading plane model is Boeing 787-10 Dreamliner, making up 32.32% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.72%, Airbus A330-900neo with 18.77%, and Boeing 777 with 18.53%.
What is the most popular airline from Seattle to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to London Heathrow Airport is Delta (25.42% of total bookings). The next most popular airlines are Virgin Atlantic (20.54%), British Airways (19.02%), and Icelandair (9.45%).
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 $498 | Free Cancellation | Rating 7.4 9,240 reviews | |||
| PriceFrom $504 | Free Cancellation | Rating 7.2 585 reviews | |||
| PriceFrom $545 | Free Cancellation | Rating 6.8 7,182 reviews | |||
| PriceFrom $560 | Free Cancellation | Rating 7.7 1,318 reviews | |||
| PriceFrom $578 | Free Cancellation | Rating 7.0 2,670 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.1 1,088 reviews | |||
| PriceFrom $587 | Free Cancellation | Rating 7.0 8,095 reviews | |||
| PriceFrom $588 | Free Cancellation | Rating 7.4 1,531 reviews | |||
| PriceFrom $590 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $597 | Free Cancellation | Rating 7.8 1,352 reviews |
Delta Flights From Seattle to London Heathrow Airport
Delta is one of the most popular airlines flying from Seattle to London Heathrow Airport, operating 4 flights/week on average for this route. A good Delta flight deal for Seattle to London Heathrow Airport starts from $604 round-trip, up to an average price of $887. Our users have rated Delta at 8.0/10.
Alaska Airlines Flights From Seattle to London Heathrow Airport
Another popular option for Seattle to London Heathrow Airport flights is Alaska Airlines (8.0/10, 9,420 ratings). Alaska Airlines flies from Seattle to London Heathrow Airport around 3 times per week, with deals starting from $800 round-trip and rising to an average price of around $1,194.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to London?
Finding the right flight to London 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 London quick and easy, saving you time and money.
Can I find flights from Seattle to London with flexible booking policies on momondo?
Flights from Seattle to London 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 Seattle to London?
Once you have performed a search for Seattle to London 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 London right now. Can momondo alert me if prices change?
Price alerts on flights to London from Seattle 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.