How long is the flight from Missouri to Region of Siem Reap?

Average flight duration from Missouri to Region of Siem Reap depends on which airport you fly into and out of. Flying from Kansas City to Siem Reap is 43h 32m on average, while flying from St. Louis to Siem Reap is 48h 50m on average. Siem Reap is the most popular airport in Region of Siem Reap.

When did momondo last update prices for flights from Missouri to Siem Reap?

Prices for flights from Missouri to Siem Reap are refreshed on a daily basis.

How old do you have to be to fly from Missouri to Siem Reap?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Siem Reap.

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

The travel and health documents required for your trip to Siem Reap can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Siem Reap. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$767 Cheap Flights from Missouri to Siem Reap in 2026

Find the cheapest flights from Missouri to Siem Reap

One-way

Last minute

Cheap one-way flights

Enter your travel dates to find the best prices.

3:04 pm - 6:05 pm

STL

SAI

39h 01m

3 stops

$767Multiple Airlines

Tue, Sep 1

6:45 pm - 9:40 am

STL

SAI

50h 55m

3 stops

$772Multiple Airlines

Sat, Aug 29

7:36 pm - 6:05 pm

STL

SAI

34h 29m

3 stops

$784Multiple Airlines

Sun, Aug 30

6:45 pm - 6:20 pm

STL

SAI

59h 35m

3 stops

$793Multiple Airlines

Wed, Sep 2

7:36 pm - 6:05 pm

STL

SAI

34h 29m

3 stops

$799Multiple Airlines

Fri, Sep 4

7:36 pm - 6:05 pm

STL

SAI

34h 29m

3 stops

$838Multiple Airlines

Thu, Sep 3

8:42 am - 3:10 pm

STL

SAI

42h 28m

2 stops

$1,009Singapore Airlines

Mon, Aug 31

3:30 pm - 9:40 am

STL

SAI

54h 10m

2 stops

$1,122Lufthansa

Tue, Sep 1

3:30 pm - 9:40 am

STL

SAI

54h 10m

2 stops

$1,127Lufthansa

Sun, Aug 30

3:04 pm - 9:40 am

STL

SAI

54h 36m

2 stops

$1,256Multiple Airlines

Sat, Aug 29

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Fly from

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Route

Depart

Return

Price

Cheapest one-way

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Tue 9/1

3:04 pm-6:05 pm

3 stops39h 01m

$767

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Sat 8/29

6:45 pm-9:40 am

3 stops50h 55m

$772

Quickest one-way

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Sun 8/30

7:36 pm-6:05 pm

3 stops34h 29m

$784

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Wed 9/2

6:45 pm-6:20 pm

3 stops59h 35m

$793

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Fri 9/4

7:36 pm-6:05 pm

3 stops34h 29m

$799

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Thu 9/3

7:36 pm-6:05 pm

3 stops34h 29m

$838

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Mon 8/31

8:42 am-3:10 pm

2 stops42h 28m

$1,009

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Tue 9/1

3:30 pm-9:40 am

2 stops54h 10m

$1,122

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Sun 8/30

3:30 pm-9:40 am

2 stops54h 10m

$1,127

St. LouisSiem Reap

STL - SAI

STLSAI

Lambert-St Louis

Sat 8/29

3:04 pm-9:40 am

2 stops54h 36m

$1,256

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Missouri to Region of Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Airlines

Other information

What is the cheapest airline that flies from Missouri to Siem Reap?

Singapore Airlines is the most popular carrier operating from Missouri to Siem Reap

Cheap Missouri to Region of Siem Reap flight deals and tips

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

Fastest flight time	43h 32m
Direct flights	None

The fastest flight from Missouri to Region of Siem Reap takes 43h 32m

There are no direct flights from Missouri to Region of Siem Reap. There are no popular flight routes from Missouri to Region of Siem Reap.

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Frequently asked questions about flying from Missouri to Siem Reap

When did momondo last update prices for flights from Missouri to Siem Reap?
Prices for flights from Missouri to Siem Reap are refreshed on a daily basis.
How old do you have to be to fly from Missouri to Siem Reap?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Siem Reap.
What documentation or ID do you need to fly to Siem Reap?
The travel and health documents required for your trip to Siem Reap can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Siem Reap. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Missouri to Siem Reap. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Siem Reap from Missouri which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Missouri 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 Missouri to Siem Reap right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Siem Reap from Missouri. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Missouri to Siem Reap from $767

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Siem Reap departing on 9/1. 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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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

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According to popular flight searches on momondo this year

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

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