Trip.com
Huge Asia-Pacific coverage with frequent flight promotions.
Compare pricesFlights from Seattle to Phnom Penh
SEA → PNH · compared across 9 travel sites
- Flight time
- from 15h 56m nonstop
- Distance
- 11,969 km
- Typical one-way
- US$515
Compare Seattle → Phnom Penh prices on 9 travel sites
Add your dates and open the same search on each travel site to find the cheapest fare. You book directly with the provider.
Booking.com
US$515Collected
Compare pricesAgoda
US$6852Collected
Compare pricesKayak
One of the largest flight metasearch engines worldwide.
Compare pricesKiwi.com
Virtual interlining specialist that mixes airlines creatively.
Compare pricesExpedia
Global OTA giant with package deals and member prices.
Compare pricesSkyscanner
The benchmark flight metasearch — “search everywhere”.
Compare pricesPriceline
Long-standing US OTA with express deals for flights.
Compare pricesMomondo
Kayak-family metasearch known for winning price comparisons.
Compare pricesFares auto-collected from partner search results on 2026-09-03 (one-way, economy).
Typical prices & when to book
Lowest fare collected
US$515
Booking.com · SGD 656.3
Auto-collected from Booking.com search results on 2026-09-03 (one-way, economy). Fares change constantly — click “Compare prices” for live fares.
Seattle → Phnom Penh route guide
The Seattle (SEA) to Phnom Penh (PNH) route covers roughly 11,969 km, with an estimated flight time of about 15h 56m for a nonstop service. Compare the travel sites above to find the best fare for your dates — availability and prices differ between them.
Departures use Seattle–Tacoma; arrivals use Techo Takhmau. Both airports handle the route with regular schedules, so same-day connections and day trips are realistic options.
Seattle → Phnom Penh flight FAQ
How long is the flight from Seattle to Phnom Penh?
Nonstop flights from Seattle to Phnom Penh take about 15h 56m. The route covers approximately 11,969 km.
How do I find the cheapest flights from Seattle to Phnom Penh?
Compare the same dates across the 9 travel sites listed above — their fares differ by provider. Midweek departures, flexible dates and booking a few weeks ahead usually help.
Are there direct flights from Seattle to Phnom Penh?
Direct availability changes by season and carrier. The estimated nonstop flight time is about 15h 56m; one-stop options are widely available.