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

Return flights

20 Mar - 18 Apr	Air China
05 Mar - 17 Mar	China Southern
15 Mar - 21 Mar	Air China
03 Mar - 14 Mar	Air China
01 Mar - 10 Mar	Air China
26 Mar - 29 Mar	Air China
16 Mar - 23 Mar	Air China
29 Mar - 19 Apr	China Southern
23 Mar - 10 Apr	Air China
07 Mar - 12 Mar	Air China
18 Mar - 25 Mar	Air China
08 Mar - 09 Mar	Air China
08 Mar - 15 Mar	Air China
30 Mar - 05 Apr	Air China
21 Mar - 05 Apr	Air China
25 Mar - 01 Apr	China Southern
26 Mar - 09 Apr	ANA
01 Mar - 01 Apr	ANA
28 Mar - 09 Apr	ANA
29 Mar - 03 Apr	ANA

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

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 March from 551€

Return flights