Cheapest return flights from Chiang Mai to Bangkok in September from $40

Best time to book flights for Chiang Mai (CNX) to Bangkok (BKK) flights at AirHint

AirHint found the following cheapest return flights from Chiang Mai (CNX) to Bangkok (BKK) in September 2025 (see full year).

Return flights

10 Sep - 16 Sep Thai VietJet Air direct
18 Sep - 22 Sep Thai VietJet Air direct
23 Sep - 13 Oct Thai VietJet Air direct
23 Sep - 25 Sep Thai VietJet Air direct
18 Sep - 21 Sep Thai VietJet Air direct
05 Sep - 10 Sep Thai AirAsia direct
05 Sep - 09 Sep Thai AirAsia direct
05 Sep - 14 Sep Thai AirAsia direct
05 Sep - 17 Sep Thai AirAsia direct
05 Sep - 24 Sep Thai AirAsia direct
05 Sep - 13 Sep Thai AirAsia direct
16 Sep - 07 Oct Thai AirAsia direct
16 Sep - 05 Oct Thai AirAsia direct
16 Sep - 06 Oct Thai AirAsia direct
16 Sep - 04 Oct Thai AirAsia direct
26 Sep - 07 Oct Thai AirAsia direct
26 Sep - 09 Oct Thai AirAsia direct
26 Sep - 15 Oct Thai AirAsia direct
26 Sep - 05 Oct Thai AirAsia direct
26 Sep - 06 Oct Thai AirAsia direct

Also check the deals for one-way flights from Chiang Mai to Bangkok in September.

Skyscanner

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