Cheap Flight Tickets from Seattle (SEA) to London (LON), Starting at $167

Good to Know: Cheapest and Fastest SEA - LON Flights

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

Cheapest One way Flight

$167

DL Delta Airlines • 1 stop • 30h

Nov 04

The cheapest one way flight from Seattle to London (SEA-LON) is currently $167

🔍 Search Flights

Fastest Flight

25h 53m

The fastest nonstop flight from Seattle to London (SEA-LON) takes 25h 53m

Top Airlines Flying from Seattle to London

Delta Airline, DL

Delta Airlines

Air France-AF

Air France

Virgin Atlantic (VS)

Virgin Atlantic

Singapore Airlines-SQ

Singapore Airlines

United Airlines, UA

United Airlines

Lufthansa Airline (LH)

Lufthansa Airlines

American Airlines, AA

American Airlines

Air Canada-AC

Air Canada

Alaska Airlines -AS

Alaska Airlines

Iberia airline

Iberia Airlines

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

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 LON?
The most popular airline flying from Seattle to London are
Can I fly from SEA to LON 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 LON Airport?
The earliest flight leaves SEA at 6:00 am and lands in LON - London All Airport
What are the airports in London?
LON
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 LON?
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 LON, which is 4800.22 miles by air.
Which airlines provide the cheapest flights from Seattle (SEA) to London (LON) ?
In the past couple of days, the cheapest tickets to LON from SEA were found on UA : USD 214
Do I need a passport to fly between SEA and LON?
Yes
What’s the latest departure time from SEA to LON ?
The last flight leaves SEA at 2:3500 pm

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

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

More Flight Options for Seattle (SEA) and London (LON)

Why Fareleaders for SEA to LON Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Seattle to London flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on SEA to LON flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Seattle to London flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the Seattle (SEA) to London (LON)
Terms and Conditions*