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

Return flights

06 Oct - 25 Nov	Delta
27 Oct - 06 Nov	Delta
26 Oct - 06 Nov	Delta
26 Oct - 07 Nov	Delta
02 Oct - 06 Oct	Frontier Airlines
22 Oct - 20 Nov	Delta
21 Oct - 28 Oct	Delta
18 Oct - 25 Oct	Delta
17 Oct - 28 Oct	Delta
26 Oct - 24 Nov	Delta
25 Oct - 07 Nov	Delta
23 Oct - 01 Nov	Korean Air
07 Oct - 06 Nov	Korean Air
07 Oct - 04 Nov	Korean Air
20 Oct - 27 Oct	Korean Air
20 Oct - 28 Oct	Korean Air
04 Oct - 12 Oct	Frontier Airlines
11 Oct - 21 Oct	Korean Air
10 Oct - 26 Oct	Korean Air
03 Oct - 11 Oct	Delta

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

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Chicago to Bangkok in October from $759

Return flights