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

Return flights

20 Jul - 27 Jul	Lufthansa
20 Jul - 30 Jul	Lufthansa
10 Jul - 22 Jul	Air China
10 Jul - 23 Jul	Air China
10 Jul - 17 Jul	Air China
10 Jul - 27 Jul	Air China
10 Jul - 24 Jul	Air China
10 Jul - 13 Aug	Air China
10 Jul - 12 Aug	Air China
21 Jul - 28 Jul	Lufthansa
14 Jul - 24 Jul	Lufthansa
20 Jul - 07 Aug	Lufthansa
20 Jul - 05 Aug	Lufthansa
10 Jul - 15 Jul	Turkish Airlines
30 Jul - 13 Aug	British Airways
10 Jul - 03 Aug	Etihad Airways
13 Jul - 13 Aug	Air India
23 Jul - 07 Aug	Lufthansa
20 Jul - 03 Aug	Lufthansa
29 Jul - 20 Aug	Air India

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 $872

Return flights