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

Return flights

18 Mar - 05 Apr	Air India
09 Mar - 30 Mar	Air India
17 Mar - 24 Mar	Korean Air
16 Mar - 24 Mar	Air India
16 Mar - 23 Mar	Korean Air
18 Mar - 25 Mar	Korean Air
18 Mar - 06 Apr	Air India
09 Mar - 17 Mar	United
06 Mar - 10 Mar	Air India
02 Mar - 07 Mar	Air India
09 Mar - 21 Mar	Air India
22 Mar - 09 Apr	Air India
18 Mar - 02 Apr	Air India
20 Mar - 24 Apr	Air India
31 Mar - 03 Apr	Delta
19 Mar - 05 Apr	Turkish Airlines
20 Mar - 27 Mar	Delta

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 704€

Return flights