AirHint found the following cheapest return flights from Chiang Rai (CEI) to Singapore (SIN) in August 2025 (see full year).

Return flights

19 Aug - 31 Aug	Thai AirAsia
09 Aug - 13 Aug	Thai VietJet Air
19 Aug - 07 Sep	Thai AirAsia
19 Aug - 03 Sep	Thai AirAsia
19 Aug - 23 Aug	Thai AirAsia
26 Aug - 31 Aug	Thai AirAsia
26 Aug - 07 Sep	Thai AirAsia
26 Aug - 03 Sep	Thai AirAsia
19 Aug - 22 Aug	Thai AirAsia
30 Aug - 31 Aug	Thai AirAsia
30 Aug - 07 Sep	Thai AirAsia
30 Aug - 03 Sep	Thai AirAsia
06 Aug - 17 Aug	Thai AirAsia
19 Aug - 05 Sep	Thai AirAsia
04 Aug - 17 Aug	Thai AirAsia
01 Aug - 17 Aug	Thai AirAsia
06 Aug - 23 Aug	Thai AirAsia
26 Aug - 05 Sep	Thai AirAsia
30 Aug - 05 Sep	Thai AirAsia
17 Aug - 07 Sep	Thai AirAsia

Also check the deals for one-way flights from Chiang Rai to Singapore 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 Chiang Rai to Singapore in August from 219€

Return flights