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Cheap flights from London Heathrow Airport to Seattle

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Find the cheapest flights from London Heathrow Airport to Seattle

Cheap return flights

These are some of the best return flight deals from London Heathrow Airport to Seattle 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 London Heathrow Airport to Seattle.

Cheap last-minute flights

Planning a quick getaway from London Heathrow Airport to Seattle? 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 Seattle, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from London Heathrow Airport to Seattle

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

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
LHR-SEA
9h 45mdirect
SEA-LHR
9h 25mdirect
American Airlines
Find Deal
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
SEA-LHR
9h 25mdirect
Alaska Airlines
Find Deal
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
Aer Lingus
Find Deal
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
Air France
Find Deal
LHR-SEA
9h 45mdirect
SEA-LHR
9h 25mdirect
Finnair
Find Deal
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
Iberia
Find Deal
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
Aeromexico
Find Deal
LHR-SEA
9h 55mdirect
SEA-LHR
9h 20mdirect
Virgin Atlantic
Find Deal
LHR-SEA
9h 45mdirect
SEA-LHR
9h 25mdirect
British Airways
Find Deal
LHR-SEA
9h 45mdirect
American Airlines
Find Deal
LHR-SEA
9h 55mdirect
LHR-SEA
9h 55mdirect
Alaska Airlines
Find Deal
LHR-SEA
9h 55mdirect
Aer Lingus
Find Deal
LHR-SEA
9h 55mdirect
Air France
Find Deal
LHR-SEA
9h 45mdirect
Finnair
Find Deal
LHR-SEA
9h 55mdirect
LHR-SEA
9h 55mdirect
Iberia
Find Deal
LHR-SEA
9h 55mdirect
Aeromexico
Find Deal
LHR-SEA
9h 55mdirect
Virgin Atlantic
Find Deal
LHR-SEA
9h 45mdirect
British Airways
Find Deal

See travel insights to Seattle from

How to get the cheapest flight ticket from London Heathrow Airport to Seattle

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 Seattle?

The month of January is, on average, the cheapest month to fly to Seattle from London Heathrow Airport, with most prices found around $1,001. If you are unable to visit Seattle during the month of January, then departing from London Heathrow Airport during the month February is also very affordable. Most momondo users find prices during this month for around $1,022.

What is the cheapest London Heathrow to Seattle/Tacoma Intl flight route?

Fly from London Heathrow to Seattle/Tacoma Intl for the best London Heathrow - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

The ideal time to book your flight to Seattle is 54 days in advance, when prices tend to average $1,237. Keep in mind that you might also find cheap flights to Seattle outside of this time window. In fact, momondo users recently found flights from London Heathrow Airport to Seattle for $1,672.

What cabin class options are available on London Heathrow to Seattle/Tacoma Intl flights?

There are 3 cabin classes available to choose from on London Heathrow to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Seattle flight prices changed over time?

As of December 2024, prices for London Heathrow Airport to Seattle flights are approximately 18% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Seattle

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

Cheap London Heathrow Airport to Seattle (LHR to SEA) flight deals and tips

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

Direct flights

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

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

    Seattle/Tacoma Intl is 7683.2 km away from London Heathrow.

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

    Prices for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl 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 licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl 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 London Heathrow Airport to Seattle?


Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Seattle for you.

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

Flights from London to Seattle 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 London to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Seattle.

I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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