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

Return flights

09 Aug - 23 Aug	Frontier Airlines
13 Aug - 21 Aug	WestJet
24 Aug - 09 Sep	WestJet
29 Aug - 13 Sep	WestJet
08 Aug - 17 Aug	WestJet
22 Aug - 29 Aug	Delta
27 Aug - 09 Sep	WestJet
27 Aug - 08 Sep	WestJet
22 Aug - 27 Aug	WestJet
04 Aug - 11 Aug	WestJet
13 Aug - 15 Aug	WestJet
03 Aug - 12 Aug	WestJet
02 Aug - 29 Sep	WestJet
14 Aug - 23 Aug	WestJet
04 Aug - 13 Aug	WestJet

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

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 August from 1134€

Return flights