Direct flights
from Seattle (SEA)
to London (LHR)

Weekly schedule for flights between Seattle-Tacoma Intl (Seattle, United States) and Heathrow (London, United Kingdom) operated by 1 airlines.
24 weekly flights operate on this route flying 4,812mi in 9h20min.
Expect $653 in average for a one-way ticket with the cheapest option at $657.