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

Return flights

09 Jul - 23 Jul	AJet
15 Jul - 22 Jul	Ryanair
14 Jul - 22 Jul	Ryanair
14 Jul - 24 Jul	Ryanair
30 Jul - 03 Aug	Ryanair
21 Jul - 27 Jul	Ryanair
13 Jul - 23 Jul	Pegasus Airlines
15 Jul - 23 Jul	Ryanair
21 Jul - 31 Jul	Ryanair
23 Jul - 05 Aug	Ryanair
16 Jul - 02 Aug	Pegasus Airlines
29 Jul - 05 Aug	Ryanair
16 Jul - 31 Jul	AJet
13 Jul - 03 Aug	Pegasus Airlines
21 Jul - 29 Jul	Ryanair
17 Jul - 03 Aug	Ryanair
16 Jul - 01 Aug	Pegasus Airlines
23 Jul - 03 Aug	Ryanair
16 Jul - 03 Aug	Pegasus Airlines
28 Jul - 03 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 746€

Return flights