Cheapest return flights from London to Seoul in April from $814

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

Return flights

28 Apr - 07 May Turkish Airlines
24 Apr - 22 May Turkish Airlines
17 Apr - 01 May Turkish Airlines
27 Apr - 06 May Turkish Airlines
27 Apr - 12 May Turkish Airlines
24 Apr - 10 May Turkish Airlines
14 Apr - 18 May Turkish Airlines
17 Apr - 27 Apr Turkish Airlines
27 Apr - 10 May Turkish Airlines
12 Apr - 25 Apr Ryanair
20 Apr - 04 May Turkish Airlines
20 Apr - 16 May Turkish Airlines
20 Apr - 27 Apr Turkish Airlines
20 Apr - 29 Apr Turkish Airlines
18 Apr - 27 Apr Turkish Airlines
24 Apr - 28 Apr Turkish Airlines
17 Apr - 30 Apr Turkish Airlines
18 Apr - 25 Apr Turkish Airlines
20 Apr - 30 Apr Turkish Airlines
15 Apr - 20 Apr Turkish Airlines

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

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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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