AirHint found the following cheapest return flights from Phuket (HKT) to Chiang Rai (CEI) in August 2026 (see full year).

Return flights

04 Aug - 11 Aug	Thai VietJet Air
05 Aug - 12 Aug	Thai VietJet Air
04 Aug - 12 Aug	Nok Air
04 Aug - 14 Aug	Nok Air
04 Aug - 10 Aug	Nok Air
05 Aug - 11 Aug	Nok Air
05 Aug - 14 Aug	Nok Air
05 Aug - 10 Aug	Nok Air
05 Aug - 26 Aug	Nok Air
26 Aug - 28 Aug	Nok Air
26 Aug - 16 Sep	Nok Air

Also check the deals for one-way flights from Phuket to Chiang Rai in August.

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 Phuket to Chiang Rai in August from $39

Return flights