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

Return flights

01 Jul - 06 Jul	China Eastern
08 Jul - 22 Jul	Air China
06 Jul - 07 Jul	Air China
08 Jul - 29 Jul	Air China
06 Jul - 13 Jul	Air China
03 Jul - 14 Jul	Air China
06 Jul - 11 Jul	Air China
07 Jul - 13 Jul	Air China
01 Jul - 04 Jul	Air China
08 Jul - 11 Jul	Air China
31 Jul - 04 Aug	China Eastern
28 Jul - 10 Aug	Shanghai Airlines
28 Jul - 12 Aug	Shanghai Airlines
31 Jul - 07 Aug	Shanghai Airlines
15 Jul - 11 Aug	Air China
31 Jul - 10 Aug	Air China
31 Jul - 03 Aug	Air China
27 Jul - 10 Aug	Air China
29 Jul - 04 Aug	Air China
31 Jul - 11 Aug	Air China

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

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 July from $696

Return flights