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

Return flights

03 Mar - 13 Mar	Lufthansa
05 Mar - 11 Mar	Lufthansa
05 Mar - 15 Mar	Lufthansa
05 Mar - 16 Mar	Lufthansa
05 Mar - 22 Mar	Lufthansa
05 Mar - 26 Mar	Lufthansa
08 Mar - 22 Mar	Lufthansa
08 Mar - 15 Mar	Lufthansa
09 Mar - 20 Mar	Lufthansa
09 Mar - 23 Mar	Lufthansa
23 Mar - 01 Apr	Lufthansa
15 Mar - 24 Apr	LOT
20 Mar - 18 Apr	Scandinavian Airlines
21 Mar - 06 Apr	Lufthansa
31 Mar - 22 Apr	SWISS
20 Mar - 06 Apr	Lufthansa
30 Mar - 06 Apr	SWISS
31 Mar - 23 Apr	SWISS
31 Mar - 24 Apr	Austrian Airlines
19 Mar - 04 Apr	Lufthansa

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 458€

Return flights