Cheapest return flights from Seoul to London in December from $606

Best time to book flights for Seoul (ICN) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Seoul (ICN) to London (LHR) in December 2025 (see full year).

Return flights

12 Dec - 15 Dec Lufthansa
23 Dec - 29 Dec Lufthansa
13 Dec - 22 Dec Lufthansa
02 Dec - 17 Dec Lufthansa
01 Dec - 07 Dec Finnair
17 Dec - 24 Dec Finnair
08 Dec - 19 Dec Finnair
19 Dec - 26 Dec Lufthansa
09 Dec - 26 Dec Lufthansa
01 Dec - 22 Dec Finnair

Also check the deals for one-way flights from Seoul 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