Cheap flights from Seattle to London Heathrow Airport from C$ 312
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 28/1. 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? 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. The most expensive is June.
What is the cheapest day to depart Seattle for London Heathrow Airport?
Monday. The cheapest day of the week is typically Monday. The most expensive is typically Friday
When is the cheapest time to fly from Seattle to London Heathrow Airport?
In the morning. Seattle to London Heathrow Airport flights are approximately 19% more expensive at noon than in the morning
What is the cheapest airline that flies to London Heathrow Airport from Seattle?
KLM. KLM, Iberia, and Icelandair 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, there are 6 flights per week flying from Seattle to London Heathrow Airport. The most common time of day flights depart is 7:00p.m., with 89% 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 42 per week as of October 2024. The most frequent departure day is Wednesday, with 29% 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 44% 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?
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 October 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.
What is the most popular plane model from Seattle to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from Seattle to London Heathrow Airport is Boeing 787-10 Dreamliner, representing 32.32% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 23.72%, Airbus A330-900neo at 18.77%, and Boeing 777 at 18.53%.
What is the most popular airline from Seattle to London Heathrow Airport?
Based on momondo bookings for flights between Seattle and London Heathrow Airport, the leading airline is Virgin Atlantic, making up 37.02% of the total bookings. Other popular airlines include British Airways with 20.67%, Icelandair with 11.54%, and Air France with 8.65%.
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$ 613 | Free Cancellation | Rating 7.0 2,670 reviews | |||
| PriceFrom C$ 715 | Free Cancellation | Rating 7.4 1,531 reviews | |||
| PriceFrom C$ 716 | Free Cancellation | Rating 7.8 1,352 reviews | |||
| PriceFrom C$ 742 | Free Cancellation | Rating 7.2 585 reviews | |||
| PriceFrom C$ 851 | Free Cancellation | Rating 8.0 8,835 reviews | |||
| PriceFrom C$ 854 | Free Cancellation | Rating 7.6 666 reviews | |||
| PriceFrom C$ 860 | Free Cancellation | Rating 6.7 6,843 reviews |
Delta Flights From Seattle to London Heathrow Airport
Delta operates around 4 flights from Seattle to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been C$ 704, but momondo users have found Delta deals from Seattle to London Heathrow Airport from as low as C$ 611 round-trip. Delta has been scored 8.0/10 in 8,835 reviews.
KLM Flights From Seattle to London Heathrow Airport
Another popular option for Seattle to London Heathrow Airport flights is KLM (7.8/10, 1,352 ratings). KLM flies from Seattle to London Heathrow Airport around 4 times per week, with deals starting from C$ 514 round-trip and rising to an average price of around C$ 650.
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.