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

Return flights

28 Mar - 11 Apr	China Southern
26 Mar - 18 Apr	China Southern
31 Mar - 15 Apr	China Southern
01 Mar - 08 Mar	Air China
07 Mar - 10 Mar	Air China
06 Mar - 11 Mar	Air China
01 Mar - 07 Mar	Air China
03 Mar - 06 Mar	Air China
20 Mar - 10 Apr	Air China
25 Mar - 07 Apr	Air China
25 Mar - 08 Apr	Air China
10 Mar - 17 Mar	Air China
17 Mar - 20 Mar	Air China
05 Mar - 12 Mar	Air China
06 Mar - 10 Mar	Air China
02 Mar - 10 Mar	Air China
25 Mar - 05 Apr	China Southern
27 Mar - 05 Apr	Air China
31 Mar - 09 Apr	ANA
21 Mar - 03 Apr	Japan Airlines

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 510€

Return flights