AirHint found the following cheapest return flights from Newark (EWR) to Chiang Mai (CNX) in July 2025 (see full year).

Return flights

29 Jul - 17 Aug	Air India
30 Jul - 17 Aug	Air India
30 Jul - 18 Aug	Air India
06 Jul - 21 Jul	Delta
31 Jul - 19 Aug	Spirit Airlines
13 Jul - 08 Aug	Air Premia
13 Jul - 09 Aug	Air Premia
14 Jul - 09 Aug	Air Premia
02 Jul - 09 Jul	Alaska Airlines
16 Jul - 06 Aug	Alaska Airlines
18 Jul - 27 Jul	Air Canada
12 Jul - 06 Aug	Alaska Airlines
29 Jul - 13 Aug	Alaska Airlines
01 Jul - 31 Jul	Air Premia

Also check the deals for one-way flights from Newark to Chiang Mai in July.

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 Newark to Chiang Mai in July from $1210

Return flights