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

Return flights

01 Dec - 11 Dec	Wizz Air UK
01 Dec - 15 Dec	Wizz Air UK
08 Dec - 22 Dec	Wizz Air UK
06 Dec - 12 Dec	Wizz Air UK
15 Dec - 24 Dec	Ryanair
07 Dec - 12 Dec	Wizz Air
04 Dec - 16 Dec	easyJet
11 Dec - 22 Dec	Wizz Air UK
15 Dec - 14 Jan	Ryanair
05 Dec - 26 Dec	Wizz Air UK
09 Dec - 16 Dec	easyJet
05 Dec - 11 Jan	Wizz Air UK
12 Dec - 10 Jan	Wizz Air UK
28 Dec - 07 Jan	Wizz Air UK
12 Dec - 11 Jan	Wizz Air UK
12 Dec - 05 Jan	Wizz Air UK
15 Dec - 02 Jan	Ryanair
29 Dec - 12 Jan	Ryanair
11 Dec - 02 Jan	Wizz Air UK
13 Dec - 11 Jan	Wizz Air

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from London to Seoul in December from 562€

Return flights