$963 Find Cheap Flights from Denver to Siem Reap

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Siem Reap departing on 6/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Siem Reap

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Siem Reap, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Siem Reap, as well as popular online travel agencies
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Flight Deals
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Flight Deals

Book Cheap Denver to Siem Reap Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Siem Reap that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Siem Reap

Sun, May 3 - Sun, May 10
Multiple Airlines Logo
11:59 pm - 9:40 am
DEN
-
SAI
44h 41m
3 stops
Multiple Airlines Logo
10:30 am - 11:01 pm
SAI
-
DEN
49h 31m
3 stops
$1,429Multiple Airlines
Sun, May 3 - Sun, May 10
Multiple Airlines Logo
8:00 am - 9:40 am
DEN
-
SAI
36h 40m
2 stops
Multiple Airlines Logo
10:30 am - 11:01 pm
SAI
-
DEN
49h 31m
3 stops
$1,490Multiple Airlines
Sun, Aug 2 - Thu, Aug 6
Multiple Airlines Logo
10:02 am - 9:40 am
DEN
-
SAI
34h 38m
2 stops
Multiple Airlines Logo
10:30 am - 10:47 pm
SAI
-
DEN
49h 17m
2 stops
$1,568Multiple Airlines
Sun, Aug 2 - Thu, Aug 6
Multiple Airlines Logo
6:00 am - 9:30 pm
DEN
-
SAI
50h 30m
3 stops
Multiple Airlines Logo
11:50 pm - 10:47 pm
SAI
-
DEN
35h 57m
3 stops
$1,592Multiple Airlines
Wed, Jun 10 - Wed, Jun 24
Singapore Airlines Logo
12:56 pm - 9:40 am
DEN
-
SAI
31h 44m
3 stops
Singapore Airlines Logo
4:00 pm - 7:40 pm
SAI
-
DEN
40h 40m
2 stops
$1,624Singapore Airlines
Tue, May 12 - Wed, Jun 17
Multiple Airlines Logo
5:25 pm - 1:15 pm
DEN
-
SAI
30h 50m
3 stops
Multiple Airlines Logo
9:40 am - 10:15 pm
SAI
-
DEN
25h 35m
3 stops
$1,635Multiple Airlines
Sun, May 3 - Sun, May 10
Multiple Airlines Logo
6:00 am - 9:40 am
DEN
-
SAI
38h 40m
2 stops
Multiple Airlines Logo
10:30 am - 7:40 pm
SAI
-
DEN
46h 10m
2 stops
$1,641Multiple Airlines
Mon, Jun 1 - Tue, Jun 30
Multiple Airlines Logo
6:10 pm - 9:30 pm
DEN
-
SAI
62h 20m
3 stops
Multiple Airlines Logo
11:50 pm - 10:47 pm
SAI
-
DEN
35h 57m
3 stops
$1,707Multiple Airlines
Mon, Jun 1 - Tue, Jun 30
Multiple Airlines Logo
9:10 pm - 9:40 am
DEN
-
SAI
47h 30m
2 stops
Multiple Airlines Logo
7:10 pm - 4:16 pm
SAI
-
DEN
34h 06m
2 stops
$2,001Multiple Airlines
Tue, May 12 - Wed, Jun 17
KLM Logo
5:40 pm - 6:45 pm
DEN
-
SAI
36h 05m
2 stops
KLM Logo
7:30 pm - 3:40 pm
SAI
-
DEN
57h 10m
2 stops
$2,102KLM
Useful Info

FAQs - booking Siem Reap flights

  • How does KAYAK find such low prices on flights from Denver to Siem Reap?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Siem Reap.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Siem Reap?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver to Siem Reap is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Siem Reap?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Denver to Siem Reap with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Siem Reap?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Denver to Siem Reap up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Denver to Siem Reap

 
See real verified KAYAK customer reviews for airlines flying from Denver to Siem Reap. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Siem Reap? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1484 reviews
8.0Comfort
8.6Crew
8.0Entertainment
8.3Boarding
7.8Food
Airline reviews

They ran out of the second choice of food was stuck with fish

4.0 OkayOscar, Mar 2026
LAX - NRT
Read more Singapore Airlines reviews

They ran out of the second choice of food was stuck with fish

Overall were very good and I was satisfied w/ all the food and services.

I wish there was a little more leg room between the seats. The recline was good and seats overall were comfortable. I also didn’t like the 2-4-2 configuration.

toilets could be cleaned more frequently, everything else was pretty good.

The flight crew was phenominal! We couldn't have asked for any better. They were experienced professionals.

Wish the underseat compartment don’t have a restriction, can fit a personal item such as backpack fully like most Boeing

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

We were not given option for meals since they ran out of the other option but good thing the remaining options tasted great.

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Everything you need to know for your flight from Denver to Siem Reap

Information on your arrival and departure airports

Denver (DEN)