AirHint found the following cheapest return flights from Chicago (ORD) to Bangkok (BKK) in September 2026 (see full year).
Return flights
| 23 Sep - 13 Oct | Turkish Airlines | ||
| 19 Sep - 08 Oct | Turkish Airlines | ||
| 01 Sep - 08 Sep | Cathay Pacific | ||
| 04 Sep - 13 Sep | United | ||
| 17 Sep - 20 Sep | Delta | ||
| 01 Sep - 14 Sep | Cathay Pacific |
Also check the deals for one-way flights from Chicago to Bangkok in September.
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