Cheapest return flights from Seattle to Phnom-penh in December from $1119
AirHint found the following cheapest return flights from Seattle (SEA) to Phnom-penh (PNH) in December 2025 (see full year).
Return flights
| 04 Dec - 30 Dec | Asiana Airlines | ||
| 11 Dec - 30 Dec | Singapore Airlines | ||
| 18 Dec - 29 Jan | Singapore Airlines | ||
| 22 Dec - 10 Jan | Singapore Airlines | ||
| 24 Dec - 04 Jan | Philippine Airlines |
Also check the deals for one-way flights from Seattle to Phnom-penh in December.
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.
