AirHint found the following cheapest return flights from Chicago (MDW) to Tokyo (NRT) in October 2025 (see full year).

Return flights

12 Oct - 24 Oct	Frontier Airlines
10 Oct - 17 Oct	Frontier Airlines
13 Oct - 24 Oct	Frontier Airlines
13 Oct - 25 Oct	Frontier Airlines
12 Oct - 21 Oct	Frontier Airlines
09 Oct - 13 Oct	Frontier Airlines
12 Oct - 23 Oct	Frontier Airlines
16 Oct - 23 Oct	Frontier Airlines
10 Oct - 24 Oct	Frontier Airlines
04 Oct - 16 Oct	WestJet
30 Oct - 11 Nov	Delta

Also check the deals for one-way flights from Chicago to Tokyo in October.

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 Chicago to Tokyo in October from 829€

Return flights