AirHint found the following cheapest return flights from Chicago (ORD) to Bangkok (BKK) in December 2026 (see full year).

Return flights

09 Dec - 20 Dec	Air India
09 Dec - 17 Dec	Air India
27 Dec - 10 Jan	Air India
01 Dec - 30 Dec	United
04 Dec - 12 Dec	Air India
07 Dec - 31 Dec	Air India
25 Dec - 09 Jan	Air India
27 Dec - 09 Jan	Air India
18 Dec - 03 Jan	Air India
18 Dec - 09 Jan	Air India
20 Dec - 31 Dec	Air India
16 Dec - 08 Jan	Air India

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

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 December from $739

Return flights