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

Return flights

02 Mar - 19 Mar	Turkish Airlines
16 Mar - 21 Mar	Air India
11 Mar - 22 Mar	Air India
13 Mar - 22 Mar	Air India
02 Mar - 10 Mar	Air India
09 Mar - 17 Mar	Air India
02 Mar - 12 Mar	Air India
06 Mar - 15 Mar	Air India
02 Mar - 11 Mar	United
03 Mar - 12 Mar	United
18 Mar - 05 Apr	Cathay Pacific
26 Mar - 02 Apr	Cathay Pacific
27 Mar - 06 Apr	Cathay Pacific
30 Mar - 06 Apr	Delta
27 Mar - 10 Apr	Air India

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 637€

Return flights