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

Return flights

01 Jul - 14 Jul	Air India
01 Jul - 21 Jul	Air India
01 Jul - 12 Jul	Air India
02 Jul - 09 Jul	Air India
02 Jul - 08 Jul	Austrian Airlines
01 Jul - 17 Jul	Air India
01 Jul - 01 Aug	Air India
06 Jul - 12 Jul	Air India
03 Jul - 18 Jul	Air India
04 Jul - 21 Jul	Air India
04 Jul - 26 Jul	Air India
21 Jul - 24 Aug	Finnair
20 Jul - 18 Aug	Finnair
17 Jul - 18 Aug	Finnair
21 Jul - 04 Aug	Finnair
20 Jul - 24 Aug	Finnair
16 Jul - 31 Aug	Finnair
24 Jul - 22 Aug	Air Astana
24 Jul - 30 Aug	Finnair
23 Jul - 11 Aug	Finnair

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 $739

Return flights