Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seattle to London

1 adult
0 bags
'This year, momondo is the #1 place for airfares on the internet.'
Save money when you book flights with momondo
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? Stopover? Instantly customise 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 return flights

These are some of the best return flight deals from Seattle to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to London.

Cheap last-minute flights

Planning a quick getaway from Seattle to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Seattle to London

Find recent round-trip train or bus tickets from Seattle to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
American Airlines
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Alaska Airlines
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Aer Lingus
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Air France
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Finnair
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Iberia
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Aeromexico
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Virgin Atlantic
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
Singapore Airlines
Find Deal
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
British Airways
Find Deal
SEA-LHR
9h 20mdirect
American Airlines
Find Deal
SEA-LHR
9h 20mdirect
SEA-LHR
9h 20mdirect
Alaska Airlines
Find Deal
SEA-LHR
9h 20mdirect
Aer Lingus
Find Deal
SEA-LHR
9h 20mdirect
Air France
Find Deal
SEA-LHR
9h 20mdirect
Finnair
Find Deal
SEA-LHR
9h 20mdirect
SEA-LHR
9h 20mdirect
Iberia
Find Deal
SEA-LHR
9h 20mdirect
Aeromexico
Find Deal
SEA-LHR
9h 20mdirect
Virgin Atlantic
Find Deal
SEA-LHR
9h 20mdirect
Singapore Airlines
Find Deal
SEA-LHR
9h 20mdirect
British Airways
Find Deal

How to get the cheapest flight ticket from Seattle to London

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?

January. The cheapest time of year to fly to London from Seattle is January. The most expensive is June.

How far in advance should you book Seattle to London flights?

7 days before. The cheapest time to buy a flight from Seattle to London is approximately 7 days to departure

How many flights depart from Seattle to London on average per day?

The number of flights available between Seattle and London is 13 per day as of November 2024. The most frequent departure time is 18:00, with 57% of daily flights leaving in the evening.

How many flights depart from Seattle to London on average per week?

92 flights are operational weekly from Seattle to London as of November 2024. The most popular departure day for this route is Sunday, with 17% of flights per week taking off on this day.

How have Seattle to London flight prices changed over time?

As of November 2024, prices for Seattle to London flights are approximately 30% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to London

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Seattle to London (SEA to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to London

Direct flights

None
There are no direct flights from Seattle to London. There are no popular flight routes from Seattle to London.

  • How far is Seattle/Tacoma Intl to London by plane?

    There are 7694,7 km between Seattle/Tacoma Intl and London.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London?

    Prices for flights from Seattle/Tacoma Intl Airport to London refresh daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to London?

    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 stopovers 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.

  • What documentation or ID do you need to fly to London?

    The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Seattle to London?


Why use momondo?

Why should I use momondo to find a flight deal from Seattle to London?

It is quick and easy to find Seattle to London 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 London that suits you.

Can I find flights from Seattle to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to London flights to just show those with flexible booking policies.

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.


An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Wed 13/11
Wed 20/11
Email me momondo's favourite deals

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 49.5 km from London