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.

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?

The number of operators available for flights from Denver Intl Airport to Siem Reap is 1 as of September 2026.

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.

$601 Cheap Flights from Denver to Siem Reap in 2026/27

Find the cheapest flights from Denver to Siem Reap

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 pm - 4:00 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

32h 15m2 stops Los Angeles Singapore Changi

10:45 am - 5:54 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

45h 09m2 stops Singapore Changi Los Angeles

$1,307Singapore Airlines

Tue, Dec 1 - Tue, Dec 15

10:41 am - 9:55 amDEN Denver Intl-SAI Siem Reap–Angkor Intl

33h 14m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:45 am - 5:50 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

45h 05m2 stops Singapore Changi Los Angeles

$1,379Singapore Airlines

Mon, Feb 15 - Mon, Feb 22

10:41 am - 9:55 amDEN Denver Intl-SAI Siem Reap–Angkor Intl

33h 14m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

4:50 pm - 5:50 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

39h 00m3 stops Singapore Changi Tokyo Narita Los Angeles

$1,383Singapore Airlines

Mon, Feb 15 - Mon, Feb 22

7:03 am - 9:10 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

48h 07m3 stops Seattle/Tacoma Intl Dubai Intl Bangkok Suvarnabhumi

11:50 pm - 8:57 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

35h 07m3 stops Bangkok Suvarnabhumi Dubai Intl Seattle/Tacoma Intl

$1,543Multiple Airlines

Tue, Nov 10 - Tue, Nov 24

7:30 pm - 6:30 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

33h 00m2 stops Istanbul Bangkok Suvarnabhumi

7:25 pm - 5:25 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

60h 00m2 stops Bangkok Suvarnabhumi Istanbul

$1,544Multiple Airlines

Mon, Nov 9 - Mon, Nov 23

3:30 pm - 4:00 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

58h 30m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

4:50 pm - 11:08 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

44h 18m3 stops Singapore Changi Frankfurt am Main New York John F Kennedy Intl

$1,569Multiple Airlines

Mon, Nov 9 - Mon, Nov 23

3:30 pm - 4:00 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

58h 30m3 stops New York John F Kennedy Intl Frankfurt am Main Singapore Changi

10:45 am - 5:56 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

45h 11m2 stops Singapore Changi Los Angeles

$1,574Multiple Airlines

Tue, Nov 10 - Tue, Nov 24

7:03 am - 9:10 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

48h 07m3 stops Seattle/Tacoma Intl Dubai Intl Bangkok Suvarnabhumi

11:50 pm - 10:38 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

36h 48m3 stops Bangkok Suvarnabhumi Dubai Intl Seattle/Tacoma Intl

$1,585Multiple Airlines

Tue, Nov 3 - Tue, Nov 17

7:03 am - 9:10 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

48h 07m3 stops Seattle/Tacoma Intl Dubai Intl Bangkok Suvarnabhumi

11:50 pm - 10:38 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

36h 48m3 stops Bangkok Suvarnabhumi Dubai Intl Seattle/Tacoma Intl

$1,604Emirates

Tue, Nov 3 - Tue, Nov 17

7:03 am - 9:10 pmDEN Denver Intl-SAI Siem Reap–Angkor Intl

48h 07m3 stops Seattle/Tacoma Intl Dubai Intl Bangkok Suvarnabhumi

11:50 pm - 8:57 pmSAI Siem Reap–Angkor Intl-DEN Denver Intl

35h 07m3 stops Bangkok Suvarnabhumi Dubai Intl Seattle/Tacoma Intl

$1,604Emirates

Tue, Nov 10 - Tue, Nov 24

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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

Dec 1

DEN5:45 pmDenver Intl

32h 15m

2 stops

SAI4:00 pmSiem Reap–Angkor Intl

Dec 15

SAI10:45 amSiem Reap–Angkor Intl

45h 09m

2 stops

DEN5:54 pmDenver Intl

$1,307

Singapore Airlines

Feb 15

DEN10:41 amDenver Intl

33h 14m

3 stops

SAI9:55 amSiem Reap–Angkor Intl

Feb 22

SAI10:45 amSiem Reap–Angkor Intl

45h 05m

2 stops

DEN5:50 pmDenver Intl

$1,379

Singapore Airlines

Feb 15

DEN10:41 amDenver Intl

33h 14m

3 stops

SAI9:55 amSiem Reap–Angkor Intl

Feb 22

SAI4:50 pmSiem Reap–Angkor Intl

39h 00m

3 stops

DEN5:50 pmDenver Intl

$1,383

Emirates flights from Denver to Region of Siem Reap

Our best Emirates deals on Denver to Region of Siem Reap flight tickets

Emirates

Nov 3

DEN7:03 amDenver Intl

48h 07m

3 stops

SAI9:10 pmSiem Reap–Angkor Intl

Nov 17

SAI11:50 pmSiem Reap–Angkor Intl

36h 48m

3 stops

DEN10:38 pmDenver Intl

$1,604

Emirates

Nov 10

DEN7:03 amDenver Intl

48h 07m

3 stops

SAI9:10 pmSiem Reap–Angkor Intl

Nov 24

SAI11:50 pmSiem Reap–Angkor Intl

35h 07m

3 stops

DEN8:57 pmDenver Intl

$1,875

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Tue 12/1

5:45 pm-4:00 pm

2 stops32h 15m

Siem Reap–Angkor Intl

Tue 12/15

10:45 am-5:54 pm

2 stops45h 09m

$1,307

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Mon 2/15

10:41 am-9:55 am

3 stops33h 14m

Siem Reap–Angkor Intl

Mon 2/22

10:45 am-5:50 pm

2 stops45h 05m

$1,379

Quickest round-trip

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Mon 2/15

10:41 am-9:55 am

3 stops33h 14m

Siem Reap–Angkor Intl

Mon 2/22

4:50 pm-5:50 pm

3 stops39h 00m

$1,383

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Tue 11/10

7:03 am-9:10 pm

3 stops48h 07m

Siem Reap–Angkor Intl

Tue 11/24

11:50 pm-8:57 pm

3 stops35h 07m

$1,543

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Mon 11/9

7:30 pm-6:30 pm

2 stops33h 00m

Siem Reap–Angkor Intl

Mon 11/23

7:25 pm-5:25 pm

2 stops60h 00m

$1,544

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Mon 11/9

3:30 pm-4:00 pm

3 stops58h 30m

Siem Reap–Angkor Intl

Mon 11/23

4:50 pm-11:08 pm

3 stops44h 18m

$1,569

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Tue 11/10

3:30 pm-4:00 pm

3 stops58h 30m

Siem Reap–Angkor Intl

Tue 11/24

10:45 am-5:56 pm

2 stops45h 11m

$1,574

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Tue 11/3

7:03 am-9:10 pm

3 stops48h 07m

Siem Reap–Angkor Intl

Tue 11/17

11:50 pm-10:38 pm

3 stops36h 48m

$1,585

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Tue 11/3

7:03 am-9:10 pm

3 stops48h 07m

Siem Reap–Angkor Intl

Tue 11/17

11:50 pm-10:38 pm

3 stops36h 48m

$1,604

DenverSiem Reap

DEN Denver Intl - SAI Siem Reap–Angkor Intl

DENSAI

Denver Intl

Tue 11/10

7:03 am-9:10 pm

3 stops48h 07m

Siem Reap–Angkor Intl

Tue 11/24

11:50 pm-8:57 pm

3 stops35h 07m

$1,604

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted 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

Best Price Found	$601
Fastest flight time	32h 10m
Direct flights	None

The best one-way flight to Region of Siem Reap from Denver in the past 72 hours is $601. The best round-trip flight deal from Denver to Region of Siem Reap found on momondo in the last 72 hours is $1,307.

The fastest flight from Denver to Region of Siem Reap takes 32h 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.

Search flight deals

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?
The number of operators available for flights from Denver Intl Airport to Siem Reap is 1 as of September 2026.
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 Airlines	PriceFrom $835	Free Cancellation	Rating 8.2 1,600 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.

An easier way to manage your Region of Siem Reap trip

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Cheap flights from Denver to Siem Reap from $601

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 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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

Emirates flights from Denver to Region of Siem Reap

Our best Emirates deals on Denver to Region of Siem Reap flight tickets

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Cheap Denver to Region of Siem Reap flight deals and tips

Best Price Found

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Direct flights

Frequently asked questions about flying from Denver to Siem Reap

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

Frequently asked questions about flying from Denver to Siem Reap

Why use momondo?

An easier way to manage your Region of Siem Reap trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Siem Reap

Popular cities in Siem Reap

Popular flights according to clicks in the last 7 days on momondo

Denver flight routes

According to popular flight searches on momondo this year

Region of Siem Reap flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Siem Reap

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Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.

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According to popular flight searches on momondo this year