AirHint found the following cheapest return flights from Seoul (ICN) to London (LHR) in December 2026 (see full year).

Return flights

03 Dec - 07 Dec	KLM
14 Dec - 31 Dec	Air France
02 Dec - 08 Dec	Air France
07 Dec - 05 Jan	Air France
27 Dec - 06 Jan	KLM
29 Dec - 06 Jan	KLM
07 Dec - 11 Dec	Air France
01 Dec - 10 Dec	Air France
04 Dec - 11 Dec	KLM
18 Dec - 27 Dec	Lufthansa
18 Dec - 01 Jan	Lufthansa
09 Dec - 15 Dec	Lufthansa
04 Dec - 16 Dec	Scandinavian Airlines
24 Dec - 07 Jan	KLM
18 Dec - 30 Dec	Lufthansa
27 Dec - 01 Jan	KLM
30 Dec - 03 Jan	Air France
21 Dec - 16 Jan	Air China
24 Dec - 25 Jan	KLM
28 Dec - 15 Jan	Lufthansa

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

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

Cheapest return flights from Seoul to London in December from 526€

Return flights