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

Return flights

09 Dec - 11 Dec	Delta
26 Dec - 06 Jan	Delta
26 Dec - 11 Jan	Delta
23 Dec - 31 Dec	Air France
23 Dec - 06 Jan	Delta
24 Dec - 02 Jan	Delta
15 Dec - 06 Jan	Delta
10 Dec - 26 Dec	Delta
22 Dec - 04 Jan	Delta
12 Dec - 16 Dec	Delta
19 Dec - 02 Jan	Delta
10 Dec - 08 Jan	Delta
22 Dec - 05 Jan	Delta
20 Dec - 04 Jan	Delta
16 Dec - 30 Dec	Delta

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 1123€

Return flights