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

Return flights

04 Mar - 11 Mar	China Eastern
08 Mar - 15 Mar	China Eastern
08 Mar - 18 Mar	China Eastern
04 Mar - 14 Mar	China Eastern
06 Mar - 13 Mar	China Eastern
13 Mar - 23 Mar	China Eastern
03 Mar - 31 Mar	Lufthansa
03 Mar - 16 Mar	Lufthansa
03 Mar - 18 Mar	Lufthansa
03 Mar - 15 Mar	Lufthansa
04 Mar - 01 Apr	Lufthansa
05 Mar - 02 Apr	Lufthansa
03 Mar - 03 Apr	Lufthansa
24 Mar - 01 Apr	Austrian Airlines
03 Mar - 28 Apr	Lufthansa
17 Mar - 06 Apr	Air China
22 Mar - 05 Apr	Air India
24 Mar - 03 Apr	Air India
25 Mar - 07 Apr	Air India
24 Mar - 07 Apr	Air India

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 $528

Return flights