Heathrow (LHR) to Seattle-Tacoma International (SEA). Served by Delta, British Airways.
A nonstop flight from London to Seattle takes approximately 9h 30m.
Delta and British Airways fly from LHR to SEA. That's 2 airlines serving this route.
The distance is 4,787 miles (7,702 km). with a nonstop flight time of about 9h 30m. Airlines on this route include Delta, British Airways.
Set up a guest alert and we'll keep checking prices for you. No account needed.
Get Started Free →