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Cheap flights from Denver to Siem Reap from $745

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 11/9. 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
$937China Eastern
Wed, Sep 2 - Fri, Sep 11
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 - 7:44 pm
SAI
-
DEN
40h 44m
2 stops
$1,273Singapore Airlines
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
$1,309Singapore 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
$1,345Singapore Airlines
Fri, Nov 27 - Fri, Jan 15
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
$1,416Singapore Airlines
Fri, Nov 27 - Fri, Jan 15
Singapore Airlines Logo
5:50 pm - 3:55 pm
DEN
-
SAI
32h 05m
2 stops
Singapore Airlines Logo
10:45 am - 5:50 pm
SAI
-
DEN
45h 05m
3 stops
$1,427Singapore Airlines
Sun, Nov 22 - Fri, Jan 15
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
$1,428Singapore 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 - 10:41 pm
SAI
-
DEN
26h 01m
3 stops
$1,429Multiple Airlines
Tue, Sep 1 - Thu, Oct 1

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China Eastern flights from Denver to Siem Reap

Our best China Eastern deals on Denver to Siem Reap flight tickets
China Eastern
Sep 2
DEN7:41 amDenver Intl
47h 29m
3 stops
SAI8:10 pmSiem Reap–Angkor Intl
Sep 11
SAI9:10 pmSiem Reap–Angkor Intl
34h 01m
3 stops
DEN6:11 pmDenver Intl
$937
China Eastern
Sep 2
DEN7:41 amDenver Intl
47h 29m
3 stops
SAI8:10 pmSiem Reap–Angkor Intl
Sep 11
SAI9:10 pmSiem Reap–Angkor Intl
34h 01m
3 stops
DEN6:11 pmDenver Intl
$1,060

Singapore Airlines flights from Denver to Siem Reap

Our best Singapore Airlines deals on Denver to 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 44m
2 stops
DEN7:44 pmDenver Intl
$1,273
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
$1,309

momondo Fare Finder

 
Customize your flight search to find flights from Denver to 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 26, 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

$937

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-7:44 pm

2 stops40h 44m

$1,273

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

$1,309

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Fri 11/27

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

$1,345

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Fri 11/27

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

$1,416

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Sun 11/22

5:50 pm-3:55 pm

2 stops32h 05m

Siem Reap–Angkor Intl

Fri 1/15

10:45 am-5:50 pm

3 stops45h 05m

$1,427

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

$1,428
Quickest round-trip

DenverSiem Reap

DEN - SAI

DENSAI

Denver Intl

Tue 9/1

6:26 pm-6:20 pm

3 stops34h 54m

Siem Reap–Angkor Intl

Thu 10/1

9:40 am-10:41 pm

3 stops26h 01m

$1,429

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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When to book flights from Denver to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Siem Reap (DEN to SAI) flight deals and tips

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

Fastest flight time

36h 40m

Direct flights

None
The fastest flight from Denver to Siem Reap takes 36h 40m
There are no direct flights from Denver to Siem Reap. There are no popular flight routes from Denver to Siem Reap.
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Frequently asked questions about flying from Denver to Siem Reap

  • How far is Denver Intl to Siem Reap–Angkor Intl by plane?

    A flight from Denver Intl to Siem Reap–Angkor Intl will travel around 8320.6 mi. 36h 40m is a normal flight duration for this route.

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

    Prices for flights from Denver Intl Airport to Siem Reap–Angkor Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Denver Intl Airport to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The required travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Denver to Siem Reap?

Best airlines flying from Denver to Siem Reap

Compare and see reviews for airlines that fly from Denver to Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $835Free CancellationRating
8.2
1,581 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 Siem Reap?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Denver from Siem Reap. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Siem Reap for you.

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

Yes. All flights to Siem Reap from Denver on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Denver to Siem Reap flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Denver to Siem Reap flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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