AirHint found the following cheapest return flights from Tokyo (HND) to Seoul (ICN) in September 2026 (see full year).

Return flights

01 Sep - 08 Sep	Korean Air	direct
01 Sep - 05 Sep	Korean Air	direct
10 Sep - 14 Sep	Korean Air	direct
17 Sep - 18 Sep	Korean Air	direct
08 Sep - 15 Sep	Korean Air	direct
14 Sep - 18 Sep	Korean Air	direct
09 Sep - 17 Sep	Korean Air	direct
15 Sep - 18 Sep	Korean Air	direct
17 Sep - 27 Sep	Korean Air	direct
07 Sep - 16 Sep	Korean Air	direct
24 Sep - 03 Oct	Korean Air	direct
25 Sep - 02 Oct	Korean Air	direct
28 Sep - 05 Oct	Korean Air	direct

Also check the deals for one-way flights from Tokyo 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 Tokyo to Seoul in September from 246€

Return flights