AirHint found the following cheapest return flights from Houston (HOU) to Phnom-penh (PNH) in July 2025 (see full year).

Return flights

09 Jul - 22 Jul	Spirit Airlines
07 Jul - 20 Jul	Spirit Airlines
03 Jul - 17 Jul	Spirit Airlines
03 Jul - 18 Jul	Spirit Airlines
08 Jul - 21 Jul	Frontier Airlines
07 Jul - 21 Jul	Alaska Airlines
04 Jul - 18 Jul	Zipair
06 Jul - 21 Jul	Alaska Airlines

Also check the deals for one-way flights from Houston to Phnom-penh 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 Houston to Phnom-penh in July from $1183

Return flights