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

Return flights

21 Jul - 28 Jul	Lufthansa
16 Jul - 28 Jul	Lufthansa
29 Jul - 13 Aug	Lufthansa
06 Jul - 25 Aug	Malaysia Airlines
05 Jul - 18 Aug	Malaysia Airlines
16 Jul - 30 Jul	Lufthansa
07 Jul - 14 Jul	Lufthansa
15 Jul - 23 Jul	Lufthansa
25 Jul - 13 Aug	Lufthansa
27 Jul - 10 Aug	Finnair
28 Jul - 30 Jul	Lufthansa
28 Jul - 11 Aug	Lufthansa
16 Jul - 29 Jul	Lufthansa
07 Jul - 13 Jul	Lufthansa
06 Jul - 14 Jul	Finnair
17 Jul - 23 Jul	Lufthansa
29 Jul - 12 Aug	Lufthansa
27 Jul - 15 Aug	Lufthansa
27 Jul - 12 Aug	Lufthansa
29 Jul - 11 Aug	Lufthansa

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 $688

Return flights