AirHint found the following cheapest return flights from Boston (BOS) to Phnom-penh (PNH) in September 2025 (see full year).
Return flights
| 08 Sep - 24 Sep | Korean Air | ||
| 01 Sep - 11 Sep | Korean Air | ||
| 17 Sep - 09 Oct | Korean Air | ||
| 04 Sep - 09 Oct | Korean Air | ||
| 12 Sep - 04 Oct | Korean Air |
Also check the deals for one-way flights from Boston to Phnom-penh in September.
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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