$601 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 8/3. 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

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

Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
7:08 pm - 9:40 am
DEN
-
SAI
49h 32m
2 stops
Multiple Airlines Logo
4:00 pm - 4:43 pm
SAI
-
DEN
37h 43m
2 stops
$1,282Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Singapore Airlines Logo
5:50 pm - 3:10 pm
DEN
-
SAI
32h 20m
2 stops
Singapore Airlines Logo
10:30 am - 7:38 pm
SAI
-
DEN
46h 08m
3 stops
$1,367Singapore Airlines
Tue, Aug 4 - Tue, Oct 6
Singapore Airlines Logo
10:02 am - 9:40 am
DEN
-
SAI
34h 38m
3 stops
Singapore Airlines Logo
10:30 am - 7:38 pm
SAI
-
DEN
46h 08m
2 stops
$1,559Singapore Airlines
Tue, Aug 4 - Tue, Oct 6
Multiple Airlines Logo
6:02 am - 9:30 pm
DEN
-
SAI
50h 28m
3 stops
Multiple Airlines Logo
11:50 pm - 10:21 pm
SAI
-
DEN
35h 31m
3 stops
$1,569Multiple Airlines
Tue, Aug 4 - Tue, Oct 6
Multiple Airlines Logo
11:40 am - 9:00 am
DEN
-
SAI
32h 20m
2 stops
Multiple Airlines Logo
7:10 pm - 12:05 pm
SAI
-
DEN
29h 55m
2 stops
$1,711Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
9:10 pm - 1:15 pm
DEN
-
SAI
27h 05m
3 stops
Multiple Airlines Logo
9:40 am - 10:19 pm
SAI
-
DEN
25h 39m
3 stops
$1,737Multiple Airlines
Mon, Jun 1 - Sat, Jun 13
Multiple Airlines Logo
6:10 pm - 9:30 pm
DEN
-
SAI
62h 20m
3 stops
Multiple Airlines Logo
11:50 pm - 11:56 am
SAI
-
DEN
49h 06m
3 stops
$2,171Multiple Airlines
Sun, Jul 5 - Sat, Jul 18
Multiple Airlines Logo
11:25 am - 9:30 pm
DEN
-
SAI
45h 05m
3 stops
Multiple Airlines Logo
11:50 pm - 11:59 pm
SAI
-
DEN
37h 09m
3 stops
$2,193Multiple Airlines
Mon, Jun 1 - Fri, Jun 12
KLM Logo
5:40 pm - 12:20 pm
DEN
-
SAI
29h 40m
2 stops
KLM Logo
7:35 pm - 3:40 pm
SAI
-
DEN
57h 05m
2 stops
$2,203KLM
Mon, Jun 1 - Sun, Jul 5
Multiple Airlines Logo
7:50 pm - 12:20 pm
DEN
-
SAI
27h 30m
2 stops
Multiple Airlines Logo
7:35 pm - 12:35 pm
SAI
-
DEN
30h 00m
2 stops
$2,298Multiple Airlines
Booking Insights

KAYAK's insights & trends for Denver to Siem Reap flights

Get data-powered insights and trends into flights from Denver to Siem Reap to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Denver to Siem Reap?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 7 days.

In the past 7 days, the cheapest round-trip tickets from Denver to Siem Reap were found on Singapore Airlines ($1,559) and KLM ($2,203).

Find deals

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 1522 reviews
7.8Food
8.0Comfort
8.0Entertainment
8.6Crew
8.3Boarding
Airline reviews

Clean modern comfortable. Food could have been better, I only ate breakfast I wish they wouldn’t wake sleeping passengers who would rather sleep through dinner. No tea or coffee for breakfast

8.0 ExcellentAnonymous, May 2026
JFK - FRA
Read more Singapore Airlines reviews

Clean modern comfortable. Food could have been better, I only ate breakfast I wish they wouldn’t wake sleeping passengers who would rather sleep through dinner. No tea or coffee for breakfast

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

I had ordered vegetarian food. What I was presented was extremely dissatisfying and not up to the mark. I pretty much did not eat entire 19 hours. For.an airline voted as best in business, it was extremely disappointing. Seats were not comfortable to sleep. Entertainment system didn’t have much choice. WiFi didn’t work for more than half the time. Cabin crew were also difficult to understand. A bit of diversity like Emirates crew would go a long way.

A little more room from the reclining seat in the front of me.

Overall the airline tried to give excellent service. The wheelchair service was bad at SFO. My baggage was also delayed but I thank them for taking the trouble to find it and deliver it to my home.

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.

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

Information on your arrival and departure airports

Denver (DEN)