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Cheap flights from Denver to Siem Reap from $1,640

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Siem Reap departing on 11/22. 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.
Singapore Airlines Logo
7:58 am - 9:50 am
DEN
-
SAI
35h 52m
2 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
2 stops
$1,640Singapore Airlines
Sun, Nov 22 - Sun, Jan 10
Singapore Airlines Logo
7:58 am - 3:55 pm
DEN
-
SAI
41h 57m
2 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
3 stops
$1,641Singapore Airlines
Sun, Nov 22 - Sun, Jan 10
Singapore Airlines Logo
5:40 pm - 9:40 am
DEN
-
SAI
27h 00m
2 stops
Singapore Airlines Logo
10:30 am - 7:45 pm
SAI
-
DEN
46h 15m
2 stops
$1,646Singapore Airlines
Wed, Oct 7 - Tue, Oct 20
Singapore Airlines Logo
5:40 pm - 3:10 pm
DEN
-
SAI
32h 30m
2 stops
Singapore Airlines Logo
10:30 am - 8:24 am
SAI
-
DEN
34h 54m
2 stops
$1,673Singapore Airlines
Mon, Oct 5 - Mon, Oct 19
Singapore Airlines Logo
5:40 pm - 3:10 pm
DEN
-
SAI
32h 30m
2 stops
Singapore Airlines Logo
10:30 am - 7:45 pm
SAI
-
DEN
46h 15m
2 stops
$1,676Singapore Airlines
Mon, Oct 5 - Tue, Oct 20
Multiple Airlines Logo
1:49 pm - 9:40 am
DEN
-
SAI
30h 51m
2 stops
Multiple Airlines Logo
10:30 am - 10:15 pm
SAI
-
DEN
48h 45m
2 stops
$1,679Multiple Airlines
Tue, Oct 6 - Mon, Oct 19
Singapore Airlines Logo
5:40 pm - 3:10 pm
DEN
-
SAI
32h 30m
2 stops
Singapore Airlines Logo
4:00 pm - 7:45 pm
SAI
-
DEN
40h 45m
2 stops
$1,680Singapore Airlines
Mon, Oct 5 - Fri, Oct 16
Multiple Airlines Logo
11:25 am - 9:15 am
DEN
-
SAI
31h 50m
2 stops
Multiple Airlines Logo
6:40 pm - 7:30 pm
SAI
-
DEN
38h 50m
3 stops
$1,709Multiple Airlines
Thu, Nov 26 - Sun, Jan 10
Singapore Airlines Logo
10:02 am - 9:40 am
DEN
-
SAI
34h 38m
3 stops
Singapore Airlines Logo
10:30 am - 7:39 pm
SAI
-
DEN
46h 09m
2 stops
$1,713Singapore Airlines
Mon, Jul 27 - Fri, Aug 21
Multiple Airlines Logo
4:15 pm - 12:15 pm
DEN
-
SAI
31h 00m
2 stops
Multiple Airlines Logo
10:30 am - 8:40 am
SAI
-
DEN
35h 10m
2 stops
$1,714Multiple Airlines
Tue, Oct 6 - Tue, Oct 20

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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
Nov 22
DEN7:58 amDenver Intl
41h 57m
2 stops
SAI3:55 pmSiem Reap–Angkor Intl
Jan 15
SAI10:45 amSiem Reap–Angkor Intl
45h 05m
3 stops
DEN5:50 pmDenver Intl
$1,423
Singapore Airlines
Nov 22
DEN7:58 amDenver Intl
41h 57m
2 stops
SAI3:55 pmSiem Reap–Angkor Intl
Jan 15
SAI10:45 amSiem Reap–Angkor Intl
45h 05m
2 stops
DEN5:50 pmDenver Intl
$1,540
Singapore Airlines
Nov 22
DEN7:58 amDenver Intl
35h 52m
3 stops
SAI9:50 amSiem Reap–Angkor Intl
Jan 15
SAI10:45 amSiem Reap–Angkor Intl
45h 05m
3 stops
DEN5:50 pmDenver Intl
$1,596

Lufthansa flights from Denver to Region of Siem Reap

Our best Lufthansa deals on Denver to Region of Siem Reap flight tickets
Lufthansa
Oct 8
DEN5:40 pmDenver Intl
51h 00m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Oct 20
SAI10:30 amSiem Reap–Angkor Intl
45h 15m
2 stops
DEN6:45 pmDenver Intl
$1,933
Lufthansa
Oct 8
DEN5:40 pmDenver Intl
51h 00m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Oct 21
SAI4:00 pmSiem Reap–Angkor Intl
34h 35m
2 stops
DEN1:35 pmDenver Intl
$1,953
Lufthansa
Oct 6
DEN4:05 pmDenver Intl
37h 50m
2 stops
SAI6:55 pmSiem Reap–Angkor Intl
Oct 22
SAI10:30 amSiem Reap–Angkor Intl
40h 05m
2 stops
DEN1:35 pmDenver Intl
$2,079

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 June 16, 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

Sun 11/22

7:58 am-9:50 am

2 stops35h 52m

Siem Reap–Angkor Intl

Sun 1/10

10:45 am-5:50 pm

2 stops45h 05m

$1,640

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Sun 11/22

7:58 am-3:55 pm

2 stops41h 57m

Siem Reap–Angkor Intl

Sun 1/10

10:45 am-5:50 pm

3 stops45h 05m

$1,641

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Wed 10/7

5:40 pm-9:40 am

2 stops27h 00m

Siem Reap–Angkor Intl

Tue 10/20

10:30 am-7:45 pm

2 stops46h 15m

$1,646

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 10/5

5:40 pm-3:10 pm

2 stops32h 30m

Siem Reap–Angkor Intl

Mon 10/19

10:30 am-8:24 am

2 stops34h 54m

$1,673

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 10/5

5:40 pm-3:10 pm

2 stops32h 30m

Siem Reap–Angkor Intl

Tue 10/20

10:30 am-7:45 pm

2 stops46h 15m

$1,676

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 10/6

1:49 pm-9:40 am

2 stops30h 51m

Siem Reap–Angkor Intl

Mon 10/19

10:30 am-10:15 pm

2 stops48h 45m

$1,679

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 10/5

5:40 pm-3:10 pm

2 stops32h 30m

Siem Reap–Angkor Intl

Fri 10/16

4:00 pm-7:45 pm

2 stops40h 45m

$1,680

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Thu 11/26

11:25 am-9:15 am

2 stops31h 50m

Siem Reap–Angkor Intl

Sun 1/10

6:40 pm-7:30 pm

3 stops38h 50m

$1,709

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Mon 7/27

10:02 am-9:40 am

3 stops34h 38m

Siem Reap–Angkor Intl

Fri 8/21

10:30 am-7:39 pm

2 stops46h 09m

$1,713
Quickest round-trip

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 10/6

4:15 pm-12:15 pm

2 stops31h 00m

Siem Reap–Angkor Intl

Tue 10/20

10:30 am-8:40 am

2 stops35h 10m

$1,714

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

34h 38m

Direct flights

None
The fastest flight from Denver to Region of Siem Reap takes 34h 38m
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
1,545 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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