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Cheap flights from Las Vegas to Siem Reap from $634

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Siem Reap departing on 11/5. 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 Las Vegas to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:41 am - 9:50 am
LAS
-
SAI
32h 09m
2 stops
Singapore Airlines Logo
10:45 am - 11:56 pm
SAI
-
LAS
28h 11m
2 stops
$1,253Singapore Airlines
Wed, Nov 25 - Sun, Dec 27
Singapore Airlines Logo
8:00 am - 9:50 am
LAS
-
SAI
34h 50m
3 stops
Singapore Airlines Logo
10:45 am - 11:56 pm
SAI
-
LAS
28h 11m
2 stops
$1,421Singapore Airlines
Wed, Nov 25 - Sun, Dec 27
Singapore Airlines Logo
8:00 am - 9:50 am
LAS
-
SAI
34h 50m
3 stops
Singapore Airlines Logo
4:45 pm - 5:57 pm
SAI
-
LAS
40h 12m
3 stops
$1,652Singapore Airlines
Wed, Nov 25 - Sun, Dec 27
Multiple Airlines Logo
2:54 pm - 3:10 pm
LAS
-
SAI
34h 16m
2 stops
Multiple Airlines Logo
10:30 am - 1:50 pm
SAI
-
LAS
41h 20m
2 stops
$1,914Multiple Airlines
Mon, Jul 6 - Fri, Jul 17
Multiple Airlines Logo
6:03 pm - 1:15 pm
LAS
-
SAI
29h 12m
3 stops
Multiple Airlines Logo
9:40 am - 11:42 pm
SAI
-
LAS
28h 02m
3 stops
$1,969Multiple Airlines
Mon, Jul 6 - Fri, Jul 17
Multiple Airlines Logo
6:03 pm - 6:40 pm
LAS
-
SAI
34h 37m
3 stops
Multiple Airlines Logo
9:45 pm - 9:05 am
SAI
-
LAS
49h 20m
2 stops
$2,000Multiple Airlines
Mon, Jul 6 - Fri, Jul 17

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Singapore Airlines flights from Las Vegas to Region of Siem Reap

Our best Singapore Airlines deals on Las Vegas to Region of Siem Reap flight tickets
Singapore Airlines
Nov 25
LAS10:41 amLas Vegas Harry Reid Intl
32h 09m
2 stops
SAI9:50 amSiem Reap–Angkor Intl
Dec 27
SAI10:45 amSiem Reap–Angkor Intl
28h 11m
2 stops
LAS11:56 pmLas Vegas Harry Reid Intl
$1,253
Singapore Airlines
Nov 25
LAS8:00 amLas Vegas Harry Reid Intl
34h 50m
3 stops
SAI9:50 amSiem Reap–Angkor Intl
Dec 27
SAI10:45 amSiem Reap–Angkor Intl
28h 11m
2 stops
LAS11:56 pmLas Vegas Harry Reid Intl
$1,421
Singapore Airlines
Nov 25
LAS8:00 amLas Vegas Harry Reid Intl
34h 50m
3 stops
SAI9:50 amSiem Reap–Angkor Intl
Dec 27
SAI4:45 pmSiem Reap–Angkor Intl
40h 12m
3 stops
LAS5:57 pmLas Vegas Harry Reid Intl
$1,652

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas 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 20, 2026.
Use the filters below to find and compare flights from Las Vegas to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Wed 11/25

10:41 am-9:50 am

2 stops32h 09m

Siem Reap–Angkor Intl

Sun 12/27

10:45 am-11:56 pm

2 stops28h 11m

$1,253

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Wed 11/25

8:00 am-9:50 am

3 stops34h 50m

Siem Reap–Angkor Intl

Sun 12/27

10:45 am-11:56 pm

2 stops28h 11m

$1,421

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Wed 11/25

8:00 am-9:50 am

3 stops34h 50m

Siem Reap–Angkor Intl

Sun 12/27

4:45 pm-5:57 pm

3 stops40h 12m

$1,652

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Mon 7/6

2:54 pm-3:10 pm

2 stops34h 16m

Siem Reap–Angkor Intl

Fri 7/17

10:30 am-1:50 pm

2 stops41h 20m

$1,914
Quickest round-trip

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Mon 7/6

6:03 pm-1:15 pm

3 stops29h 12m

Siem Reap–Angkor Intl

Fri 7/17

9:40 am-11:42 pm

3 stops28h 02m

$1,969

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Mon 7/6

6:03 pm-6:40 pm

3 stops34h 37m

Siem Reap–Angkor Intl

Fri 7/17

9:45 pm-9:05 am

2 stops49h 20m

$2,000
Cheapest one-way

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Thu 11/5

7:00 am-8:00 pm

3 stops46h 00m

$634
Quickest one-way

Las VegasSiem Reap

LAS - SAI

LASSAI

Las Vegas Harry Reid Intl

Thu 11/5

12:10 pm-8:30 pm

2 stops41h 20m

$660

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Las Vegas to Region of Siem Reap flight deals and tips

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

Fastest flight time

34h 16m

Direct flights

None
The fastest flight from Las Vegas to Region of Siem Reap takes 34h 16m
There are no direct flights from Las Vegas to Region of Siem Reap. There are no popular flight routes from Las Vegas to Region of Siem Reap.
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Frequently asked questions about flying from Las Vegas to Siem Reap

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Siem Reap?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Siem Reap are refreshed on a daily basis.

  • How old do you have to be to fly from Las Vegas Harry Reid 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 Las Vegas Harry Reid 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.

Frequently asked questions about flying from Las Vegas to Siem Reap

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

    Confirm your travel details to search for the latest offers for flights from Las Vegas 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 Las Vegas 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 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 Las Vegas to Siem Reap?

Finding the right flight to Siem Reap from Las Vegas is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Siem Reap quick and easy, saving you time and money.

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

All flight searches from Las Vegas to Siem Reap on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Las Vegas 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 Las Vegas to Siem Reap.

I’m not ready to book a flight from Las Vegas 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 Las Vegas and alert you when they change.

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Mon 7/20
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