Cheapest return flights from Seattle to Phnom-penh in May from $904

Best time to book flights for Seattle (SEA) to Phnom-penh (PNH) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Phnom-penh (PNH) in May 2025 (see full year).

Return flights

14 May - 20 Jun Asiana Airlines
15 May - 21 Jun Asiana Airlines
14 May - 21 Jun Asiana Airlines
28 May - 11 Jun Alaska Airlines
18 May - 29 May Alaska Airlines
28 May - 13 Jun Asiana Airlines
16 May - 23 May Asiana Airlines
25 May - 01 Jun Philippine Airlines
28 May - 30 Jun Air Canada

Also check the deals for one-way flights from Seattle to Phnom-penh in May.

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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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