AirHint found the following cheapest return flights from Seattle (SEA) to Phnom-penh (PNH) in August 2025 (see full year).
Return flights
| 17 Aug - 31 Aug | Delta | ||
| 18 Aug - 20 Aug | Korean Air |
Also check the deals for one-way flights from Seattle 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.
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