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Siem Reap

$1,186+ Cheap flights from Denver (DEN) to Siem Reap, Cambodia (SAI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAI
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
1 adult, Economy
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Cheap flight deals from Denver to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 January 16, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,369
(KAYAK)
Provider with most accurate pricing for Denver Intl-Siem Reap–Angkor Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Siem Reap–Angkor Intl flights.
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From Denver Intl to Siem Reap–Angkor Intl
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Find flight deals from Denver to Siem Reap

Cheapest flights from Denver to Siem Reap
Explore the most affordable flight options available from Denver to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2026.

This Justfly.com deal was found by Cheapflights users on 1/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:14 pm
DEN
-
SAI
3 stops37h 41m
Singapore Airlines
Wed 3/1810:45 am
SAI
-
DEN
2 stops44h 37m
Singapore Airlines
Deal found 1/15$1,186
This FlightHub deal was found by Cheapflights users on 1/16. 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.
Wed 4/88:11 pm
DEN
-
SAI
2 stops29h 59m
Singapore Airlines
Wed 6/174:00 pm
SAI
-
DEN
2 stops40h 30m
Singapore Airlines
Deal found 1/16$1,195
This KAYAK deal was found by Cheapflights users on 1/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:42 pm
DEN
-
SAI
2 stops32h 28m
Multiple Airlines
Mon 4/2010:30 am
SAI
-
DEN
2 stops50h 26m
Multiple Airlines
Deal found 1/14$1,369
This KAYAK deal was found by Cheapflights users on 1/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:43 pm
DEN
-
SAI
2 stops30h 12m
Singapore Airlines
Tue 3/174:45 pm
SAI
-
DEN
2 stops30h 26m
Singapore Airlines
Deal found 1/15$1,392
This Ovago deal was found by Cheapflights users on 1/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/511:25 am
DEN
-
SAI
2 stops31h 45m
Multiple Airlines
Tue 3/174:45 pm
SAI
-
DEN
2 stops30h 26m
Multiple Airlines
Deal found 1/15$1,398
This United Airlines deal was found by Cheapflights users on 1/15. 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.
Mon 3/29:20 pm
DEN
-
SAI
2 stops52h 35m
United Airlines
Wed 3/1810:45 am
SAI
-
DEN
2 stops44h 40m
United Airlines
Deal found 1/15$1,410
This Justfly.com deal was found by Cheapflights users on 1/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:42 pm
DEN
-
SAI
2 stops32h 28m
Singapore Airlines
Mon 4/2010:30 am
SAI
-
DEN
3 stops49h 32m
Singapore Airlines
Deal found 1/14$1,446
This KAYAK deal was found by Cheapflights users on 1/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:14 pm
DEN
-
SAI
3 stops37h 41m
Singapore Airlines
Sun 3/1510:45 am
SAI
-
DEN
3 stops49h 19m
Singapore Airlines
Deal found 1/15$1,449
This United Airlines deal was found by Cheapflights users on 1/15. 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.
Sun 3/13:54 pm
DEN
-
SAI
2 stops34h 01m
United Airlines
Wed 3/1810:45 am
SAI
-
DEN
2 stops34h 57m
United Airlines
Deal found 1/15$1,450

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 January 16, 2026.
Use the filters below to find and compare flights from Denver to Siem Reap that are best for you.

Fly from

Denver

Fly to

Siem Reap

Route

Depart

Return

Price

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 3/4

12:14 pm-3:55 pm

3 stops37h 41m

Siem Reap–Angkor Intl

Wed 3/18

10:45 am-6:22 pm

2 stops44h 37m

$1,186

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 3/3

7:43 pm-3:55 pm

2 stops30h 12m

Siem Reap–Angkor Intl

Wed 3/18

10:45 am-4:40 pm

2 stops42h 55m

$1,410

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 3/2

9:20 pm-3:55 pm

2 stops52h 35m

Siem Reap–Angkor Intl

Sun 3/15

10:45 am-10:20 pm

2 stops48h 35m

$1,410

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 3/2

9:20 pm-3:55 pm

2 stops52h 35m

Siem Reap–Angkor Intl

Tue 3/17

4:45 pm-12:28 pm

2 stops32h 43m

$1,410

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 3/2

9:20 pm-3:55 pm

2 stops52h 35m

Siem Reap–Angkor Intl

Wed 3/18

10:45 am-6:25 pm

2 stops44h 40m

$1,410

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Thu 3/5

5:25 am-3:55 pm

2 stops44h 30m

Siem Reap–Angkor Intl

Wed 3/18

10:45 am-10:20 pm

2 stops48h 35m

$1,410

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 3/3

1:27 pm-3:55 pm

2 stops36h 28m

Siem Reap–Angkor Intl

Sun 3/15

10:45 am-4:40 pm

2 stops42h 55m

$1,410

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Fri 4/10

8:11 pm-9:40 am

3 stops48h 29m

Siem Reap–Angkor Intl

Mon 4/20

10:30 am-12:08 pm

2 stops38h 38m

$1,430

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 3/4

12:14 pm-3:55 pm

3 stops37h 41m

Siem Reap–Angkor Intl

Sun 3/15

10:45 am-11:04 pm

3 stops49h 19m

$1,449

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Fri 3/6

7:45 am-9:50 am

2 stops36h 05m

Siem Reap–Angkor Intl

Wed 3/18

10:45 am-12:28 pm

2 stops38h 43m

$1,450

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 12 results
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Compare providers for flights from Denver 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 Denver to Siem Reap in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 Denver-Siem Reap flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Siem Reap flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Denver-Siem Reap flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Siem Reap flights, Cheapflights users trust eDreams the most. eDreams 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 Denver-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 Denver to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Denver 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.

Related info for your journey

Find useful and relevant information for your journey from Denver 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 Denver to Siem Reap?

    For as low as $1,410, Singapore Airlines can have you in Siem Reap from Denver in 30h 12m. The distance from Denver to Siem Reap is about 8311 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver 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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