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

Return flights

16 Jul - 29 Jul	Wizz Air UK
14 Jul - 31 Jul	Wizz Air UK
21 Jul - 31 Jul	Wizz Air UK
14 Jul - 29 Jul	Wizz Air UK
28 Jul - 03 Aug	Wizz Air UK
09 Jul - 23 Jul	Wizz Air UK
14 Jul - 27 Jul	Wizz Air UK
08 Jul - 12 Jul	Wizz Air UK
30 Jul - 07 Aug	Wizz Air UK
09 Jul - 17 Jul	Wizz Air UK
14 Jul - 24 Jul	Wizz Air UK
10 Jul - 22 Jul	Wizz Air UK
18 Jul - 03 Aug	Wizz Air UK
14 Jul - 03 Aug	Wizz Air UK
16 Jul - 03 Aug	Wizz Air UK
20 Jul - 04 Aug	Ryanair
21 Jul - 17 Aug	Wizz Air UK
09 Jul - 06 Aug	Wizz Air
14 Jul - 12 Aug	Wizz Air UK
21 Jul - 21 Aug	Wizz Air UK

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 677€

Return flights