Cheap flights from Seattle to London Heathrow Airport from C$ 311
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 19/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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JetBlue flights from Seattle to London Heathrow Airport
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Finnair flights from Seattle to London Heathrow Airport
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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 to London Heathrow Airport?
The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Seattle, with most prices found around C$ 995. If you aren’t able to travel to London Heathrow Airport during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of C$ 1,004.
What is the cheapest day to depart on your flight to London Heathrow Airport?
According to our data, Monday is the cheapest day to fly to London Heathrow Airport from Seattle. The lowest ticket price found for a Monday departure recently was C$ 907. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to London Heathrow Airport for around C$ 1,138.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
Our data shows that the cheapest Seattle to London Heathrow Airport flights are usually those with departure times in the morning. Our users have found flights to London Heathrow Airport in the morning for as low as C$ 971. At noon is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,117 per ticket.
What is the cheapest Seattle/Tacoma Intl to London Heathrow flight route?
Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Seattle when booking 44 days ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around C$ 1,186 when searching 44 days out. However, in the past 72 hours, people saw flights from Seattle for as low as C$ 1,393.
What cabin class options are available on Seattle/Tacoma Intl to London Heathrow flights?
There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to London Heathrow 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 47% 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 December 2024, prices for Seattle to London Heathrow Airport flights are approximately 25% cheaper when compared to flights at the same time last year.
How many flights depart from Seattle to London Heathrow Airport on average per day?
As of December 2024, there are 12 flights per day flying from Seattle to London Heathrow Airport. The most common time of day flights depart is 6:00p.m., with 50% of flights taking off in the afternoon.
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 90 per week as of December 2024. The most frequent departure day is Tue, with 20% of weekly flights leaving on this day.
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 December 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 34.91% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 24.82%, Airbus A330-900neo at 18.22%, and Boeing 777 at 16.41%.
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 35% of the total bookings. Other popular airlines include British Airways with 21%, Icelandair with 13%, and Delta with 9%.
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$ 629 | Free Cancellation | Rating 7.0 2,656 reviews | |||
| PriceFrom C$ 630 | Free Cancellation | Rating 7.1 510 reviews | |||
| PriceFrom C$ 734 | Free Cancellation | Rating 7.4 1,504 reviews | |||
| PriceFrom C$ 734 | Free Cancellation | Rating 7.8 1,349 reviews | |||
| PriceFrom C$ 837 | Free Cancellation | Rating 7.5 668 reviews | |||
| PriceFrom C$ 873 | Free Cancellation | Rating 8.0 8,604 reviews | |||
| PriceFrom C$ 882 | Free Cancellation | Rating 6.6 6,820 reviews |
Delta Flights From Seattle to London Heathrow Airport
Delta operates around 9 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 8,604 reviews.
KLM Flights From Seattle to London Heathrow Airport
Another popular option for Seattle to London Heathrow Airport flights is KLM (7.8/10, 1,349 ratings). KLM flies from Seattle to London Heathrow Airport around 9 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.