Cheap Flight Tickets from Seattle (SEA) to London (LHR), Starting at $1026

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

$1026

DL Delta Airlines • 1 stop • 23h 30m

Nov 16 – Nov 21

The cheapest round trip flight from Seattle to London (SEA-LHR-SEA) is currently $1026

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Cheapest Direct Flight

$1051

DL Delta Airlines • nonstop • 15h 50m

Nov 16

The cheapest nonstop flight from Seattle to London (SEA-LHR) is currently $1051

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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.

Nov 16 - Nov 21, Economy
DL
Seattle → London
23h 30m
11:45 AM - 9:55 AM • 1 stop
DL
Seattle → London
21h 57m
6:30 AM - 11:47 AM • 1 stop
$1026
Delta Airlines
Nov 16 - Nov 21, Economy
DL
Seattle → London
23h 53m
5:57 PM - 4:30 PM • 1 stop
DL
Seattle → London
53h 52m
11:15 AM - 11:47 AM • 1 stop
$1026
Delta Airlines
Nov 16 - Nov 21, Economy
DL
Seattle → London
39h
10:45 PM - 6:25 AM • 1 stop
DL
Seattle → London
21h 57m
6:30 AM - 11:47 AM • 1 stop
$1026
Delta Airlines
Nov 16 - Nov 21, Economy
DL
Seattle → London
25h 25m
8:25 AM - 7:50 AM • 1 stop
DL
Seattle → London
21h 57m
6:30 AM - 11:47 AM • 1 stop
$1026
Delta Airlines
Nov 16 - Nov 21, Economy
DL
Seattle → London
22h 20m
11:45 AM - 9:25 AM • 1 stop
DL
Seattle → London
17h 10m
12:20 PM - 2:50 PM • nonstop
$1055
Delta Airlines
Nov 16 - Nov 21, Economy
DL
Seattle → London
23h 40m
3:25 PM - 1:45 PM • 1 stop
DL
Seattle → London
17h 10m
12:20 PM - 2:50 PM • nonstop
$1056
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 8:25 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 1055
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 10:45 pm

Essential Information for Booking Flights from Seattle (SEA) - AI Insights

What's the cheapest airline from sea to lhr?
You can find the cheapest airline from Seattle to London Heathrow with a round-trip First class ticket on Icelandair, which offers luxurious suites and fine dining. Book at least 28 days in advance to secure the best Low Fares. You can find the latest airfare deals on our website.
What's the popular airline to fly from sea to lhr?
Delta Airlines offers a luxurious First class experience for your round-trip journey from Seattle Tacoma International Airport (sea) to London Heathrow Airport (lhr), with two stops. Booking 28 days in advance can help you secure affordable airfares. You can find cheap airline tickets on their website, making it a great option for budget-friendly flights.
What's the cheapest day of the week to fly from sea to lhr?
The cheapest day to fly from Seattle to London Heathrow is typically Monday, as it tends to offer lower fares compared to other days of the week.
What's the cheapest month to fly from sea to lhr?
The cheapest month to fly from Seattle to London Heathrow is August, as it tends to have lower airfares. Booking in advance, such as 28 days prior to your trip, can also help you secure better rates.
Which airline/airlines fly from sea to lhr?
You can fly from Seattle Tacoma International Airport (SEA) to London Heathrow Airport (LHR) with the following airlines: Turkish Airlines, KLM Airlines, United Airlines, WestJet Airlines, Lufthansa Airlines, Qatar Airways, Alaska Airlines, Aeromexico, Condor Flugdienst, and TAP - Air Portugal. These airlines offer a range of flights with varying prices, so it's worth comparing their airfares to find the cheapest option for your round-trip journey. You can use fare comparison websites to find the best deals on flights from SEA to LHR.
What is the cheapest airfare from Seattle Tacoma International to London Heathrow?
The cheapest airfare from Seattle Tacoma International to London Heathrow can be found with Icelandair (FI) with a fare of £200.
Can I book flights in advance to get the best deals?
Yes, it is recommended to book flights at least 28 days in advance to get the best deals, as per the advance booking days provided in the trip details.
How do I find the best airlines for my next trip?
You can find the best airlines for your next trip by checking the popular airlines list, which includes Delta Airlines (DL) and other top options.
What is the process for booking a round trip flight?
The process for booking a round trip flight involves selecting the round trip option, choosing your preferred airline, and completing the booking process.
Can I get a refund if I need to cancel my flight?
Refund policies vary by airline, but generally, you can get a refund if you cancel your flight, as per the serving airlines listed in the trip details.
How do I check in for my flight online?
You can check in for your flight online through the airline's website or mobile app, and print or download your boarding pass.
What is the baggage policy for flights to London Heathrow?
The baggage policy for flights to London Heathrow varies by airline, but generally, you can check one bag for free and pay for additional bags, as per the serving airlines listed in the trip details.

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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