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

Return flights

17 Nov - 27 Nov	Finnair
16 Nov - 23 Nov	China Southern
13 Nov - 30 Nov	Air France
13 Nov - 26 Nov	Air France
13 Nov - 20 Nov	Air France
13 Nov - 23 Nov	Air France
11 Nov - 23 Nov	Royal Brunei
18 Nov - 23 Nov	Royal Brunei
11 Nov - 16 Nov	Royal Brunei
18 Nov - 30 Nov	Royal Brunei
28 Nov - 03 Dec	Air China
28 Nov - 04 Dec	China Southern
26 Nov - 09 Dec	Air China
25 Nov - 02 Dec	Lufthansa
21 Nov - 01 Dec	Air China
17 Nov - 05 Dec	Finnair
30 Nov - 06 Dec	Air China
24 Nov - 01 Dec	Finnair
27 Nov - 06 Dec	Air China
29 Nov - 03 Dec	China Southern

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

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 Seoul to London in November from 564€

Return flights