Cheapest return flights from Seattle to London in December from $611

Best time to book flights for Seattle (SEA) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to London (LHR) in December 2024 (see full year).

Return flights

04 Dec - 10 Dec Virgin Atlantic
04 Dec - 10 Dec KLM direct
22 Dec - 30 Dec Delta direct
21 Dec - 28 Dec Air France direct
18 Dec - 03 Jan Air France
18 Dec - 03 Jan British Airways direct
21 Dec - 31 Dec Air France direct

Also check the deals for one-way flights from Seattle to London in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in London

Cheap car rent in London