AirHint found the following cheapest return flights from Seoul (GMP) to London (LGW) in June 2025 (see full year).

Return flights

30 Jun - 07 Jul	China Eastern
25 Jun - 30 Jun	Shanghai Airlines
29 Jun - 11 Jul	T'way Air
24 Jun - 26 Jun	Air China
22 Jun - 29 Jun	Air China
23 Jun - 25 Jun	Air China
25 Jun - 29 Jun	Air China
18 Jun - 25 Jun	Air China
21 Jun - 28 Jun	T'way Air
23 Jun - 30 Jun	Air China
24 Jun - 30 Jun	Air China
25 Jun - 28 Jun	Air China
25 Jun - 07 Jul	Air China
24 Jun - 02 Jul	Air China
24 Jun - 08 Jul	Air China
24 Jun - 07 Jul	Air China
26 Jun - 03 Jul	Air China
23 Jun - 04 Jul	Air China
26 Jun - 01 Jul	Air China
23 Jun - 03 Jul	Air China

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

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 June from $531

Return flights