Cheapest return flights from Seoul to London in December from $648

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

02 Dec - 07 Dec Royal Brunei
08 Dec - 14 Dec Lufthansa
03 Dec - 10 Dec Lufthansa
07 Dec - 16 Dec Lufthansa
15 Dec - 16 Jan Lufthansa
02 Dec - 09 Dec Lufthansa
04 Dec - 11 Dec Lufthansa
01 Dec - 08 Dec Lufthansa
24 Dec - 31 Dec Lufthansa
09 Dec - 16 Dec Lufthansa
18 Dec - 31 Dec Lufthansa
19 Dec - 01 Jan Lufthansa
19 Dec - 05 Jan Lufthansa
23 Dec - 18 Jan Royal Brunei
03 Dec - 04 Jan Air China
23 Dec - 13 Jan Finnair
30 Dec - 13 Jan Finnair
31 Dec - 07 Jan Finnair
29 Dec - 09 Jan Finnair
30 Dec - 09 Jan 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.

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