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

Return flights

18 Aug - 02 Sep	Cathay Pacific
18 Aug - 22 Sep	Cathay Pacific
07 Aug - 23 Sep	Cathay Pacific
28 Aug - 09 Sep	Cathay Pacific
26 Aug - 02 Sep	United
18 Aug - 27 Aug	ANA
19 Aug - 01 Sep	ANA
19 Aug - 26 Aug	Korean Air
29 Aug - 14 Sep	Air India
20 Aug - 27 Aug	ANA
04 Aug - 04 Sep	ANA
20 Aug - 06 Sep	Cathay Pacific
30 Aug - 14 Sep	Cathay Pacific
18 Aug - 31 Aug	ANA
03 Aug - 27 Aug	ANA
15 Aug - 29 Aug	ANA
11 Aug - 25 Aug	Air India
14 Aug - 19 Aug	United
11 Aug - 18 Aug	Delta
16 Aug - 18 Aug	Delta

Also check the deals for one-way flights from Chicago to Bangkok 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 Bangkok in August from $696

Return flights