AirHint found the following cheapest return flights from Houston (IAH) to Phnom-penh (PNH) in May 2025 (see full year).
05 May - 06 Jun | Spirit Airlines | ||
11 May - 23 Jun | Frontier Airlines | ||
06 May - 06 Jun | Spirit Airlines | ||
04 May - 16 Jun | Delta | ||
28 May - 06 Jun | Air Canada |
Also check the deals for one-way flights from Houston to Phnom-penh in May.
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.