AirHint found the following cheapest return flights from Boston (BOS) to Phnom-penh (PNH) in August 2025 (see full year).
Return flights
| 18 Aug - 22 Sep | Cathay Pacific | ||
| 23 Aug - 05 Sep | Cathay Pacific | ||
| 29 Aug - 20 Sep | Cathay Pacific | ||
| 04 Aug - 25 Aug | Delta | ||
| 13 Aug - 20 Aug | Delta | ||
| 09 Aug - 16 Aug | Delta | ||
| 01 Aug - 08 Aug | Delta |
Also check the deals for one-way flights from Boston to Phnom-penh 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.
Find us on social media