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

Return flights

09 Mar - 17 Mar	Air India
01 Mar - 08 Mar	Air India
06 Mar - 15 Mar	Air India
13 Mar - 22 Mar	Air India
06 Mar - 21 Mar	Air India
01 Mar - 15 Mar	Air India
11 Mar - 18 Mar	Turkish Airlines
03 Mar - 25 Mar	Turkish Airlines
14 Mar - 20 Mar	Turkish Airlines
18 Mar - 05 Apr	Air India
07 Mar - 20 Mar	Turkish Airlines
29 Mar - 02 Apr	EVA Air
30 Mar - 06 Apr	Korean Air
26 Mar - 05 Apr	Cathay Pacific
03 Mar - 03 Apr	EVA Air
01 Mar - 01 Apr	EVA Air
28 Mar - 05 Apr	Cathay Pacific
26 Mar - 04 Apr	Korean Air

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

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 March from $674

Return flights