AirHint found the following cheapest return flights from Birmingham (BHX) to Seoul (ICN) in September 2025 (see full year).

Return flights

03 Sep - 18 Sep	Air France
28 Sep - 08 Oct	Lufthansa
01 Sep - 17 Sep	Ryanair
25 Sep - 08 Oct	Lufthansa
02 Sep - 10 Sep	Ryanair
08 Sep - 15 Sep	Ryanair
09 Sep - 23 Sep	Lufthansa
26 Sep - 10 Oct	Lufthansa
11 Sep - 21 Sep	Etihad Airways
02 Sep - 24 Sep	Ryanair
18 Sep - 24 Sep	Lufthansa
11 Sep - 27 Sep	Air France
07 Sep - 09 Sep	Ryanair

Also check the deals for one-way flights from Birmingham to Seoul in September.

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 Birmingham to Seoul in September from 649€

Return flights