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

Return flights

14 May - 21 May	Turkish Airlines
11 May - 18 May	ANA
12 May - 25 May	ANA
09 May - 31 May	Turkish Airlines
09 May - 24 May	Turkish Airlines
02 May - 15 May	Turkish Airlines
15 May - 24 May	EVA Air
13 May - 20 Jun	Air India
20 May - 03 Jun	Delta
20 May - 31 May	Delta
21 May - 31 May	Delta
09 May - 30 May	EVA Air
25 May - 08 Jun	WestJet
22 May - 06 Jun	Delta
24 May - 07 Jun	ITA Airways
29 May - 15 Jun	Cathay Pacific

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

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 May from $775

Return flights