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

Return flights

01 Jun - 18 Jun	KLM
07 Jun - 22 Jun	KLM
17 Jun - 24 Jun	KLM
07 Jun - 28 Jun	KLM
10 Jun - 16 Jun	Lufthansa
15 Jun - 30 Jun	Lufthansa
01 Jun - 22 Jun	KLM
01 Jun - 24 Jun	KLM
17 Jun - 30 Jun	KLM
15 Jun - 22 Jun	KLM
05 Jun - 01 Jul	Lufthansa
29 Jun - 12 Jul	Lufthansa
11 Jun - 19 Jul	KLM
15 Jun - 12 Jul	KLM
30 Jun - 26 Jul	KLM
26 Jun - 10 Jul	KLM
25 Jun - 26 Jul	KLM
29 Jun - 04 Jul	KLM
19 Jun - 03 Jul	KLM

Also check the deals for one-way flights from London to Seoul in June.

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 June from 835€

Return flights