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

Return flights

01 Dec - 13 Dec	Ryanair
09 Dec - 13 Dec	Ryanair
01 Dec - 08 Dec	Ryanair
02 Dec - 14 Dec	Turkish Airlines
07 Dec - 14 Dec	Turkish Airlines
01 Dec - 14 Dec	Ryanair
02 Dec - 06 Dec	Turkish Airlines
03 Dec - 14 Dec	Turkish Airlines
03 Dec - 17 Dec	Turkish Airlines
07 Dec - 13 Dec	Turkish Airlines
03 Dec - 03 Jan	Ryanair
18 Dec - 01 Jan	Ryanair
19 Dec - 01 Jan	Ryanair
12 Dec - 03 Jan	Ryanair
14 Dec - 03 Jan	Ryanair
26 Dec - 05 Jan	Ryanair
22 Dec - 01 Jan	Turkish Airlines
24 Dec - 07 Jan	Emirates
27 Dec - 03 Jan	Ryanair
25 Dec - 05 Jan	Turkish Airlines

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

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Cheapest return flights from London to Seoul in December from 643€

Return flights