Which airports does British Airways flies between for London-Seattle?
For flights between London and Seattle, British Airways flies from the following airport routes: Heathrow (LHR) to Seattle All Airports (SEA)
What do British Airways flights from London to Seattle cost?
One of British Airways cheapest prices for a London to Seattle flight we have right now is £ 870.
On average though, flights with British Airways cost £ 4567.97 for the route London to Seattle, though it depends a lot on the season and how far in advance you book your tickets.