Cheapest return flights from Chicago to Bangkok in September from $865

Best time to book flights for Chicago (ORD) to Bangkok (BKK) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to Bangkok (BKK) in September 2025 (see full year).

Return flights

08 Sep - 17 Sep Turkish Airlines
15 Sep - 30 Sep Turkish Airlines
18 Sep - 02 Oct Turkish Airlines
23 Sep - 30 Sep Japan Airlines

Also check the deals for one-way flights from Chicago to Bangkok in September.

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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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