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

Return flights

16 Jul - 29 Jul	Norwegian
16 Jul - 03 Aug	Norwegian
16 Jul - 06 Aug	Norwegian
30 Jul - 13 Aug	Norwegian
30 Jul - 07 Aug	Norwegian
21 Jul - 01 Aug	Norwegian
30 Jul - 03 Aug	Norwegian
21 Jul - 24 Jul	Norwegian
16 Jul - 01 Aug	Norwegian
30 Jul - 06 Aug	Norwegian
21 Jul - 28 Jul	Norwegian
21 Jul - 06 Aug	Norwegian
21 Jul - 17 Aug	Norwegian
11 Jul - 23 Jul	China Eastern
21 Jul - 25 Jul	Norwegian
14 Jul - 28 Jul	China Eastern
13 Jul - 22 Jul	China Eastern
21 Jul - 27 Jul	Vueling Airlines
14 Jul - 27 Jul	Vueling Airlines
11 Jul - 16 Jul	China Eastern

Also check the deals for one-way flights from London to Seoul 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 London to Seoul in July from 748€

Return flights