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Siem Reap

Cheap flights from Seattle (SEA) to Siem Reap, Cambodia (SAI)

SEA — SAI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Seattle to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Siem Reap (SAI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Popular in

December

Cheapest in

March
Highest demand for flights based on searches. 10% potential increase in price ($131 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($53 potential savings vs. average RT price).
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Best time to book a flight from Seattle to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Siem Reap

Get insights into the airlines that provide service to Siem Reap. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siem Reap. Reviews last updated September 17, 2025.
See what other customers who have flown with Singapore Airlines from Seattle to Siem Reap have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,367 reviews

Comfort

8.0

Boarding

8.2

Food

7.7

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.1
Very good
1,367 reviews
Singapore Airlines
8.1
Very good
1,367 reviews

Comfort

8.0

Boarding

8.2

Food

7.7

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

Related info for your journey

Find useful and relevant information for your journey from Seattle to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Seattle to Siem Reap round-trip?

    Flying on Singapore Airlines is currently your cheapest option to Siem Reap, with prices starting at $675. You may be able to fly from Seattle to Siem Reap for 40% less than the average price by searching for this airline.

  • Can I find deals for flights from Seattle to Siem Reap that include hotel bookings?

    Yes. In addition to deals on Seattle to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Siem Reap.

  • Can I find deals for business class flights from Seattle to Siem Reap?

    Yes. Cheapflights offers flight deals from Seattle to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top airline flying from Seattle to Siem Reap

Discover the top airline that operate flights from Seattle to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$675Average$1,149FlexibilityNo cancel feeOn-time81%

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