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

Return flights

06 Mar - 12 Mar	Air China
01 Mar - 11 Mar	China Southern
07 Mar - 25 Mar	Air China
07 Mar - 14 Mar	China Southern
09 Mar - 23 Mar	Air China
06 Mar - 17 Mar	Air China
08 Mar - 17 Mar	Air China
08 Mar - 16 Mar	Air China
09 Mar - 26 Mar	Air China
07 Mar - 17 Mar	Air China
07 Mar - 04 Apr	Air China
21 Mar - 04 Apr	Air China
27 Mar - 13 Apr	China Southern
23 Mar - 04 Apr	Air China
28 Mar - 07 Apr	Air China
29 Mar - 06 Apr	Air China
31 Mar - 09 Apr	Air China
31 Mar - 11 Apr	Air China
31 Mar - 14 Apr	Air China
27 Mar - 11 Apr	Air China

Also check the deals for one-way flights from London to Seoul 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 London to Seoul in March from $672

Return flights