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Siem Reap

$276+ Cheap flights from Seattle (SEA) to Siem Reap, Cambodia (SAI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAI
mars 5 — mars 121
jeu. 3/5
jeu. 3/12
1 adult, Economy
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Cheap flight deals from Seattle to Siem Reap

Cheapest flights from Seattle to Siem Reap
Explore the most affordable flight options available from Seattle to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on février 3, 2026.

This FlightHub deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/1910:15 am
SEA
-
SAI
1 stop33h 25m
Singapore Airlines
mer. 6/310:30 am
SAI
-
SEA
1 stop36h 15m
Singapore Airlines
Deal found 2/1$516
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 5/2011:38 am
SEA
-
SAI
2 stops32h 02m
Singapore Airlines
mer. 5/2710:30 am
SAI
-
SEA
1 stop36h 15m
Singapore Airlines
Deal found 2/2$823
This Booking.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/511:45 am
SEA
-
SAI
2 stops34h 30m
Multiple Airlines
mer. 10/287:25 pm
SAI
-
SEA
2 stops28h 45m
Multiple Airlines
Deal found 2/2$839
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/55:55 pm
SEA
-
SAI
2 stops31h 15m
Singapore Airlines
mer. 10/284:45 pm
SAI
-
SEA
1 stop29h 25m
Singapore Airlines
Deal found 2/2$942
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/257:15 am
SEA
-
SAI
2 stops35h 35m
United Airlines
mer. 3/1110:45 am
SAI
-
SEA
2 stops43h 29m
United Airlines
Deal found 2/1$994
This FlightHub deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/2412:10 am
SEA
-
SAI
2 stops26h 20m
Multiple Airlines
mer. 3/111:25 pm
SAI
-
SEA
2 stops19h 45m
Multiple Airlines
Deal found 2/3$1,009
This FlightHub deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 4/510:15 am
SEA
-
SAI
1 stop62h 55m
Singapore Airlines
dim. 4/124:00 pm
SAI
-
SEA
1 stop54h 45m
Singapore Airlines
Deal found 2/3$1,025
This FlightHub deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/311:30 pm
SEA
-
SAI
2 stops22h 45m
Multiple Airlines
ven. 12/116:50 pm
SAI
-
SEA
2 stops37h 40m
Multiple Airlines
Deal found 2/2$1,030

Find 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 février 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$516
(FlightHub)

One-way from

$276
(FlightHub)
Provider with most accurate pricing for Seattle/Tacoma Intl-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Siem Reap–Angkor Intl flights.
Search Deals
From Seattle/Tacoma Intl to Siem Reap–Angkor Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to Siem Reap–Angkor Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated février 3, 2026.
Use the filters below to find and compare flights from Seattle to Siem Reap that are best for you.

Fly from

Seattle

Fly to

Siem Reap

Route

Depart

Return

Price

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mar. 5/19

10:15 am-9:40 am

1 stop33h 25m

Siem Reap–Angkor Intl

mer. 6/3

10:30 am-8:45 am

1 stop36h 15m

$516

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mer. 5/20

11:38 am-9:40 am

2 stops32h 02m

Siem Reap–Angkor Intl

mer. 5/27

10:30 am-8:45 am

1 stop36h 15m

$823

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mer. 3/4

12:32 pm-3:55 pm

2 stops60h 23m

Siem Reap–Angkor Intl

mer. 3/11

10:45 am-4:14 pm

2 stops43h 29m

$1,001

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mer. 2/25

12:32 pm-3:55 pm

2 stops60h 23m

Siem Reap–Angkor Intl

mer. 3/11

10:45 am-4:14 pm

2 stops43h 29m

$1,001

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mar. 2/24

12:10 am-5:30 pm

2 stops26h 20m

Siem Reap–Angkor Intl

mer. 3/11

1:25 pm-7:10 pm

2 stops19h 45m

$1,009

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mar. 5/19

1:50 am-6:45 pm

2 stops26h 55m

Siem Reap–Angkor Intl

mer. 5/27

9:40 am-7:30 pm

2 stops23h 50m

$1,087

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

sam. 5/30

10:15 am-9:40 am

1 stop33h 25m

Siem Reap–Angkor Intl

mer. 6/3

10:30 am-8:45 am

1 stop36h 15m

$1,122

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

ven. 4/3

10:15 am-3:10 pm

1 stop38h 55m

$276

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

ven. 4/10

10:15 am-9:40 am

1 stop33h 25m

$276

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

mar. 3/3

8:45 am-9:50 am

1 stop34h 05m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 16 results
1
2

Compare providers for flights from Seattle to Siem Reap

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Siem Reap in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Siem Reap flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Siem Reap flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Siem Reap flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Siem Reap flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Siem Reap flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 février 3, 2026.
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
8.2
Very good
1,443 reviews

Boarding

8.3

Overall

8.2

Comfort

8.0

Crew

8.6

Entertainment

8.0

Food

7.8

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
8.2
Very good
1,443 reviews
Singapore Airlines
8.2
Very good
1,443 reviews

Boarding

8.3

Overall

8.2

Comfort

8.0

Crew

8.6

Entertainment

8.0

Food

7.8

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.

  • How long is the flight from Seattle to Siem Reap?

    Departing from Seattle to Siem Reap will take you 33h 25m. The distance between Seattle and Siem Reap is about 7346 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $523.

  • 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.

See more FAQs

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Alternative routes for Seattle to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Siem Reap flights

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 février 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$523Average$1,083FlexibilityNo cancel feeOn-time81%

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