Cheap Flight Tickets from Seattle (SEA) to London (LHR), Starting at $1102

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 Round Trip Flight

$1102

DL Delta Airlines • 1 stop • 23h 31m

Oct 24 – Nov 08

The cheapest round trip flight from Seattle to London (SEA-LHR-SEA) is currently $1102

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Cheapest Direct Flight

$1177

DL Delta Airlines • nonstop • 15h 55m

Oct 24

The cheapest nonstop flight from Seattle to London (SEA-LHR) is currently $1177

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Fastest Flight

15h 50m

The fastest nonstop flight from Seattle to London (SEA-LHR) takes 15h 50m

Top Airlines Flying from Seattle to London

Delta Airline, DL

Delta Airlines

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

Compare and book low fare round-trip air tickets from Seattle to London. Ideal for travelers with confirmed return itineraries.

Oct 24 - Nov 08, Economy
DL
Seattle → London
23h 31m
10:59 PM - 8:10 PM • 1 stop
DL
Seattle → London
53h 22m
11:45 AM - 11:47 AM • 1 stop
$1102
Delta Airlines
Oct 24 - Nov 08, Economy
DL
Seattle → London
38h 46m
11:59 PM - 6:25 AM • 1 stop
DL
Seattle → London
32h 8m
6:30 AM - 5:58 PM • 2 stops
$1112
Delta Airlines
Oct 24 - Nov 08, Economy
DL
Seattle → London
23h 35m
1:40 PM - 10:55 AM • 1 stop
DL
Seattle → London
21h 57m
6:30 AM - 11:47 AM • 1 stop
$1152
Delta Airlines
Oct 24 - Nov 08, Economy
DL
Seattle → London
15h 55m
5:45 PM - 10:40 AM • nonstop
DL
Seattle → London
17h 10m
12:20 PM - 2:50 PM • nonstop
$1177
Delta Airlines
Oct 24 - Nov 08, Economy
DL
Seattle → London
23h 35m
11:45 AM - 9:00 AM • 1 stop
DL
Seattle → London
17h 10m
12:20 PM - 2:50 PM • nonstop
$1181
Delta Airlines
Oct 24 - Nov 08, Economy
DL
Seattle → London
20h 20m
3:25 PM - 10:45 AM • 1 stop
DL
Seattle → London
17h 10m
12:20 PM - 2:50 PM • nonstop
$1185
Delta Airlines

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?
Yes, you can fly SEA to LHR non-stop on
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 11:45 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 1102
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 11:59 pm

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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