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Cheap flights from Denver to Siem Reap from $544

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Siem Reap departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Denver to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Eastern Logo
7:41 am - 8:10 pm
DEN
-
SAI
47h 29m
3 stops
China Eastern Logo
9:10 pm - 6:11 pm
SAI
-
DEN
34h 01m
3 stops
$1,060China Eastern
Wed, Sep 2 - Fri, Sep 11
Singapore Airlines Logo
8:00 am - 9:40 am
DEN
-
SAI
36h 40m
2 stops
Singapore Airlines Logo
4:00 pm - 7:45 pm
SAI
-
DEN
40h 45m
2 stops
$1,294Singapore Airlines
Wed, Sep 2 - Fri, Sep 11
Singapore Airlines Logo
7:55 am - 3:55 pm
DEN
-
SAI
42h 00m
2 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
2 stops
$1,311Singapore Airlines
Sun, Nov 22 - Fri, Jan 15
Singapore Airlines Logo
7:55 am - 3:55 pm
DEN
-
SAI
42h 00m
2 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
2 stops
$1,330Singapore Airlines
Sun, Nov 22 - Fri, Jan 15
Singapore Airlines Logo
8:00 am - 9:40 am
DEN
-
SAI
36h 40m
2 stops
Singapore Airlines Logo
4:00 pm - 7:44 pm
SAI
-
DEN
40h 44m
2 stops
$1,330Singapore Airlines
Wed, Sep 23 - Wed, Oct 7
Multiple Airlines Logo
6:26 pm - 6:20 pm
DEN
-
SAI
34h 54m
3 stops
Multiple Airlines Logo
9:40 am - 11:09 am
SAI
-
DEN
38h 29m
3 stops
$1,429Multiple Airlines
Tue, Aug 25 - Tue, Sep 1
Singapore Airlines Logo
5:50 pm - 9:50 am
DEN
-
SAI
50h 00m
3 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
2 stops
$1,436Singapore Airlines
Sun, Nov 22 - Fri, Jan 15
Multiple Airlines Logo
3:30 pm - 9:50 am
DEN
-
SAI
52h 20m
3 stops
Multiple Airlines Logo
10:45 am - 11:47 am
SAI
-
DEN
39h 02m
2 stops
$1,442Multiple Airlines
Tue, Nov 10 - Tue, Nov 24
Singapore Airlines Logo
5:45 pm - 3:10 pm
DEN
-
SAI
32h 25m
2 stops
Singapore Airlines Logo
10:30 am - 7:44 pm
SAI
-
DEN
46h 14m
3 stops
$1,462Singapore Airlines
Wed, Sep 23 - Wed, Oct 7
Singapore Airlines Logo
5:50 pm - 9:50 am
DEN
-
SAI
50h 00m
3 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
2 stops
$1,466Singapore Airlines
Sun, Nov 22 - Fri, Jan 15

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Singapore Airlines flights from Denver to Region of Siem Reap

Our best Singapore Airlines deals on Denver to Region of Siem Reap flight tickets
Singapore Airlines
Sep 2
DEN8:00 amDenver Intl
36h 40m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Sep 11
SAI4:00 pmSiem Reap–Angkor Intl
40h 45m
2 stops
DEN7:45 pmDenver Intl
$1,294
Singapore Airlines
Nov 22
DEN7:55 amDenver Intl
42h 00m
2 stops
SAI3:55 pmSiem Reap–Angkor Intl
Jan 15
SAI10:45 amSiem Reap–Angkor Intl
45h 05m
2 stops
DEN5:50 pmDenver Intl
$1,311
Singapore Airlines
Sep 23
DEN8:00 amDenver Intl
36h 40m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Oct 7
SAI4:00 pmSiem Reap–Angkor Intl
40h 44m
2 stops
DEN7:44 pmDenver Intl
$1,330

ANA flights from Denver to Region of Siem Reap

Our best ANA deals on Denver to Region of Siem Reap flight tickets
ANA
Aug 25
DEN11:40 amDenver Intl
40h 30m
2 stops
SAI5:10 pmSiem Reap–Angkor Intl
Sep 1
SAI7:10 pmSiem Reap–Angkor Intl
30h 00m
2 stops
DEN12:10 pmDenver Intl
$1,666
ANA
Aug 25
DEN11:40 amDenver Intl
40h 30m
2 stops
SAI5:10 pmSiem Reap–Angkor Intl
Sep 1
SAI7:10 pmSiem Reap–Angkor Intl
34h 15m
3 stops
DEN4:25 pmDenver Intl
$1,708
ANA
Oct 7
DEN1:30 pmDenver Intl
62h 40m
3 stops
SAI5:10 pmSiem Reap–Angkor Intl
Oct 14
SAI7:10 pmSiem Reap–Angkor Intl
29h 55m
2 stops
DEN12:05 pmDenver Intl
$1,717

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Region of 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, momondo users made 832,500 searches. Data last updated July 30, 2026.
Use the filters below to find and compare flights from Denver to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 9/2

7:41 am-8:10 pm

3 stops47h 29m

Siem Reap–Angkor Intl

Fri 9/11

9:10 pm-6:11 pm

3 stops34h 01m

$1,060

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 9/2

8:00 am-9:40 am

2 stops36h 40m

Siem Reap–Angkor Intl

Fri 9/11

4:00 pm-7:45 pm

2 stops40h 45m

$1,294

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Sun 11/22

7:55 am-3:55 pm

2 stops42h 00m

Siem Reap–Angkor Intl

Fri 1/15

10:45 am-5:50 pm

2 stops45h 05m

$1,311

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Sun 11/22

7:55 am-3:55 pm

2 stops42h 00m

Siem Reap–Angkor Intl

Fri 1/15

10:45 am-5:50 pm

2 stops45h 05m

$1,330

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 9/23

8:00 am-9:40 am

2 stops36h 40m

Siem Reap–Angkor Intl

Wed 10/7

4:00 pm-7:44 pm

2 stops40h 44m

$1,330
Quickest round-trip

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 8/25

6:26 pm-6:20 pm

3 stops34h 54m

Siem Reap–Angkor Intl

Tue 9/1

9:40 am-11:09 am

3 stops38h 29m

$1,429

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Sun 11/22

5:50 pm-9:50 am

3 stops50h 00m

Siem Reap–Angkor Intl

Fri 1/15

10:45 am-5:50 pm

2 stops45h 05m

$1,436

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 11/10

3:30 pm-9:50 am

3 stops52h 20m

Siem Reap–Angkor Intl

Tue 11/24

10:45 am-11:47 am

2 stops39h 02m

$1,442

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 9/23

5:45 pm-3:10 pm

2 stops32h 25m

Siem Reap–Angkor Intl

Wed 10/7

10:30 am-7:44 pm

3 stops46h 14m

$1,462

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Sun 11/22

5:50 pm-9:50 am

3 stops50h 00m

Siem Reap–Angkor Intl

Fri 1/15

10:45 am-5:50 pm

2 stops45h 05m

$1,466

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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Cheap Denver to Region of Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Region of Siem Reap

Fastest flight time

30h 10m

Direct flights

None
The fastest flight from Denver to Region of Siem Reap takes 30h 10m
There are no direct flights from Denver to Region of Siem Reap. There are no popular flight routes from Denver to Region of Siem Reap.
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Frequently asked questions about flying from Denver to Siem Reap

  • When did momondo last update prices for flights from Denver Intl Airport to Siem Reap?

    Prices for flights from Denver Intl Airport to Siem Reap refresh daily.

  • How many operators does momondo search for flights from Denver Intl Airport to Siem Reap?

  • How old do you have to be to fly from Denver Intl Airport to Siem Reap?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Siem Reap.

  • What documentation or ID do you need to fly to Siem Reap?

    The necessary travel and health documents for your Siem Reap trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Denver to Region of Siem Reap

Compare and see reviews for airlines that fly from Denver to Region of Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $835Free CancellationRating
8.2
1,584 reviews
Search Singapore Airlines flights

Frequently asked questions about flying from Denver to Siem Reap

  • How do I get Price Alerts for flights from Denver to Region of Siem Reap?

    Confirm your travel details to search for the latest offers for flights from Denver to Region of Siem Reap. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Denver to Region of Siem Reap with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Siem Reap?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Siem Reap from Denver.

Can I find flights from Denver to Siem Reap with flexible booking policies on momondo?

Flights from Denver to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Denver to Siem Reap?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Denver to Siem Reap.

I’m not ready to book a flight from Denver to Siem Reap right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Siem Reap, momondo offers a useful price alert feature which will track prices for flights to Siem Reap from Denver and alert you when they change.

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