Cheapest one-way flights from Seoul to Osaka in September from $70

Best time to book flights for Seoul (GMP) to Osaka (KIX) flights at AirHint

AirHint found the following cheapest one-way flights from Seoul (GMP) to Osaka (KIX) in September 2025 (see full year).

One-Way flights

17 Sep Jeju Air direct
16 Sep Jeju Air direct
02 Sep Jeju Air direct
01 Sep Jeju Air direct
11 Sep Jeju Air direct
28 Sep Jeju Air direct
04 Sep Jeju Air direct
06 Sep Jeju Air direct
12 Sep Asiana Airlines direct
13 Sep Asiana Airlines direct

Also check the deals for return flights from Seoul to Osaka in September.

Skyscanner

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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