Find the Cheapest Flights from Seattle-Tacoma International Airport to United Kingdom

Unlock the cheapest flights and the best airfares from Seattle-Tacoma International Airport to United Kingdom. Make your dream trip both memorable and affordable!

Sun, Sep 20SEA-LON
Icelandair

oneway$290

Sun, Aug 16SEA-LON
Icelandair

$744

Sun, Jun 28SEA-MAN
Icelandair

$1,017

Seattle-Tacoma International Airport to United Kingdom: Flight information

Cheapest flight found$290

Cheapest month to flySeptember

Most popular airlineIcelandair

Average flight duration17h 35m

Cheapest flight found

Sep 2026

$290

Aug 2026

$298

Jul 2026

$371

Jun 2026

$494

FAQs

How to find cheap flights to United Kingdom from Seattle-Tacoma International Airport etc..

How long is the flight from Seattle-Tacoma International Airport to United Kingdom?

What airlines fly from Seattle-Tacoma International Airport to United Kingdom?

When to buy cheap flights from Seattle-Tacoma International Airport to United Kingdom?

How can I find the cheapest flights from Seattle-Tacoma International Airport?

How can I cancel / change my flight?

Do the prices include taxes and fees?

Does the flight price include baggage fees?

What should I do if my flight is canceled?

Travel Like Never Before

• Search And compare between flights easily
• A single travel booking that allows you to visit several cities during one trip

Download OUR APP NOW