Cheapest return ICN–SOF flights, May

AirHint found the following cheapest return flights from Seoul (ICN) to Sofia (SOF) in May 2026 (see full year).

Return flights

08 May - 15 May Lufthansa
12 May - 19 May Lufthansa
06 May - 15 May Air France
08 May - 16 May Lufthansa
10 May - 14 May KLM
22 May - 29 May Lufthansa
09 May - 14 May Air France
24 May - 29 May Lufthansa
19 May - 29 May Lufthansa
27 May - 09 Jun Lufthansa
16 May - 23 May Lufthansa
28 May - 03 Jun LOT
29 May - 15 Jun Lufthansa

Also check the deals for one-way flights from Seoul to Sofia in May.

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