Cheap Flight Tickets from Seattle (SEA) to London (LHR), Starting at $895

Good to Know: Cheapest and Fastest SEA - LHR Flights

Useful information for finding best airline tickets from Seattle Tacoma International to London Heathrow on your next trip.

Cheapest One way Flight

$895

DL Delta Airlines • 2 stops • 37h 5m

Dec 21

The cheapest one way flight from Seattle to London (SEA-LHR) is currently $895

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Fastest Flight

25h 40m

The fastest nonstop flight from Seattle to London (SEA-LHR) takes 25h 40m

Top Airlines Flying from Seattle to London

Delta Airline, DL

Delta Airlines

Air France-AF

Air France

Virgin Atlantic (VS)

Virgin Atlantic

United Airlines, UA

United Airlines

WestJet Airlines

WestJet Airlines

American Airlines, AA

American Airlines

Air Canada-AC

Air Canada

Alaska Airlines -AS

Alaska Airlines

Cathay Pacific Airways (CX)

Cathay Pacific Airways

Korean Air (KE)

Korean Air

Latest Flight Deals from Seattle (SEA) to London (LHR)

Fly from Seattle to London with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to London? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Seattle to London Flights

What are the airports in Seattle?
SEA
What’s the most popular airline flying from SEA to LHR?
The most popular airline flying from Seattle to London are
Can I fly from SEA to LHR non-stop?
NO
Which airlines fly nonstop between Seattle and London?
The non-stop flights between Seattle and London are .
What’s the earliest departure time from SEA to LHR Airport?
The earliest flight leaves SEA at 6:00 am and lands in LHR - London Heathrow
What are the airports in London?
LHR
Can I make changes to my Seattle to London flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from SEA to LHR?
Read the fare rules of the Seattle to London air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Seattle and London?
operate flights between Seattle and London
How long does a flight from Seattle to London take?
It takes approximately 10 hour to fly non-stop from SEA to LHR, which is 4800.22 miles by air.
Which airlines provide the cheapest flights from Seattle (SEA) to London (LHR) ?
In the past couple of days, the cheapest tickets to LHR from SEA were found on DL : USD 899
Do I need a passport to fly between SEA and LHR?
Yes
What’s the latest departure time from SEA to LHR ?
The last flight leaves SEA at 11:15 am

Seattle (SEA) to London (LHR): Airport Information

Origin Airport Seattle Tacoma International , Seattle, US
Destination Airport London Heathrow , London, GB
Distance 4800 miles

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