Cheapest return flights from Chicago to Bangkok in September from $826

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

04 Sep - 18 Sep ANA
09 Sep - 25 Sep ANA
02 Sep - 07 Sep United
09 Sep - 24 Sep ANA
16 Sep - 02 Oct ANA
03 Sep - 24 Sep United
25 Sep - 09 Oct ANA
25 Sep - 04 Oct Turkish Airlines
22 Sep - 27 Sep Cathay Pacific
03 Sep - 19 Sep ANA

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