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

Return flights

01 Jul - 12 Jul	Ryanair
01 Jul - 08 Jul	Turkish Airlines
01 Jul - 15 Jul	Turkish Airlines
06 Jul - 19 Jul	Turkish Airlines
03 Jul - 10 Jul	Turkish Airlines
02 Jul - 18 Jul	Turkish Airlines
05 Jul - 05 Aug	Turkish Airlines
09 Jul - 06 Aug	Ryanair
03 Jul - 12 Jul	Turkish Airlines
09 Jul - 11 Aug	Ryanair
03 Jul - 17 Jul	Ryanair
04 Jul - 17 Jul	Ryanair
04 Jul - 18 Jul	Turkish Airlines
20 Jul - 03 Aug	Ryanair
23 Jul - 06 Aug	Ryanair
14 Jul - 04 Aug	Ryanair
28 Jul - 11 Aug	Ryanair
27 Jul - 10 Aug	Ryanair
27 Jul - 17 Aug	Ryanair
28 Jul - 10 Aug	Ryanair

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 $806

Return flights