AirHint found the following cheapest return flights from Chicago (ORD) to Bangkok (BKK) in May 2026 (see full year).
Return flights
| 18 May - 18 Jun | Delta | ||
| 03 May - 11 May | United | ||
| 21 May - 29 May | Delta | ||
| 24 May - 31 May | Cathay Pacific | ||
| 14 May - 29 May | Cathay Pacific |
Also check the deals for one-way flights from Chicago to Bangkok in May.
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