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

Prices for flights from Ontario Airport to Siem Reap–Angkor Intl Airport are updated daily.

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

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 Ontario Airport to Siem Reap–Angkor Intl Airport.

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

The necessary travel and health documents for your Siem Reap–Angkor Intl Airport 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.

$582 Cheap Flights from Ontario to Siem Reap in 2026

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Find the cheapest flights from Ontario to Siem Reap

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1:53 pm - 3:55 pm

ONT

SAI

35h 02m

2 stops

10:45 am - 12:38 pm

SAI

ONT

40h 53m

2 stops

$1,094United Airlines

Tue, Feb 10 - Mon, Mar 2

6:49 pm - 9:40 am

ONT

SAI

24h 51m

2 stops

10:30 am - 9:41 am

SAI

ONT

37h 11m

2 stops

$1,099United Airlines

Wed, Apr 22 - Wed, Apr 29

6:49 pm - 9:40 am

ONT

SAI

48h 51m

2 stops

10:30 am - 9:41 am

SAI

ONT

37h 11m

2 stops

$1,105United Airlines

Sun, Apr 19 - Wed, Apr 29

6:49 pm - 9:40 am

ONT

SAI

24h 51m

2 stops

10:30 am - 12:22 pm

SAI

ONT

39h 52m

2 stops

$1,137United Airlines

Sat, Apr 18 - Wed, Apr 29

11:05 am - 9:40 am

ONT

SAI

56h 35m

2 stops

10:30 am - 12:22 pm

SAI

ONT

39h 52m

2 stops

$1,143United Airlines

Fri, Apr 17 - Wed, Apr 29

6:00 am - 9:40 am

ONT

SAI

37h 40m

2 stops

10:30 am - 12:22 pm

SAI

ONT

39h 52m

2 stops

$1,149United Airlines

Mon, Apr 20 - Wed, Apr 29

6:00 am - 9:40 am

ONT

SAI

37h 40m

2 stops

10:30 am - 12:14 pm

SAI

ONT

39h 44m

2 stops

$1,335United Airlines

Mon, Mar 30 - Sun, Apr 12

6:00 am - 9:40 am

ONT

SAI

37h 40m

2 stops

10:30 am - 10:45 pm

SAI

ONT

50h 15m

2 stops

$1,373United Airlines

Fri, Apr 3 - Sun, Apr 12

11:05 am - 9:40 am

ONT

SAI

56h 35m

2 stops

10:30 am - 10:45 pm

SAI

ONT

50h 15m

2 stops

$1,379United Airlines

Thu, Apr 2 - Sun, Apr 12

11:05 am - 9:40 am

ONT

SAI

56h 35m

2 stops

10:30 am - 12:22 pm

SAI

ONT

39h 52m

2 stops

$1,384United Airlines

Thu, Apr 16 - Wed, Apr 29

United Airlines flights from Ontario to Siem Reap

Our best United Airlines deals on Ontario to Siem Reap flight tickets

United Airlines

Feb 10

ONT1:53 pmOntario

35h 02m

2 stops

SAI3:55 pmSiem Reap–Angkor Intl

Mar 2

SAI10:45 amSiem Reap–Angkor Intl

40h 53m

2 stops

ONT12:38 pmOntario

$1,094

United Airlines

Apr 22

ONT6:49 pmOntario

24h 51m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Apr 29

SAI10:30 amSiem Reap–Angkor Intl

37h 11m

2 stops

ONT9:41 amOntario

$1,099

United Airlines

Apr 19

ONT6:49 pmOntario

48h 51m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Apr 29

SAI10:30 amSiem Reap–Angkor Intl

37h 11m

2 stops

ONT9:41 amOntario

$1,105

Qatar Airways flights from Ontario to Siem Reap

Our best Qatar Airways deals on Ontario to Siem Reap flight tickets

Qatar Airways

Apr 19

ONT6:00 amOntario

46h 45m

3 stops

SAI6:45 pmSiem Reap–Angkor Intl

Apr 30

SAI7:25 pmSiem Reap–Angkor Intl

42h 34m

3 stops

ONT11:59 pmOntario

$2,141

Qatar Airways

Apr 1

ONT6:00 amOntario

46h 45m

3 stops

SAI6:45 pmSiem Reap–Angkor Intl

Apr 10

SAI12:55 pmSiem Reap–Angkor Intl

38h 23m

3 stops

ONT1:18 pmOntario

$2,261

Qatar Airways

Feb 19

ONT12:02 pmOntario

54h 13m

3 stops

SAI9:15 amSiem Reap–Angkor Intl

Feb 22

SAI1:25 pmSiem Reap–Angkor Intl

41h 54m

3 stops

ONT4:19 pmOntario

$2,807

Fly from

Fly to

Route

Depart

Return

Price

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Tue 2/10

1:53 pm-3:55 pm

2 stops35h 02m

Siem Reap–Angkor Intl

Mon 3/2

10:45 am-12:38 pm

2 stops40h 53m

$1,094

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Wed 4/22

6:49 pm-9:40 am

2 stops24h 51m

Siem Reap–Angkor Intl

Wed 4/29

10:30 am-9:41 am

2 stops37h 11m

$1,099

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sun 4/19

6:49 pm-9:40 am

2 stops48h 51m

Siem Reap–Angkor Intl

Wed 4/29

10:30 am-9:41 am

2 stops37h 11m

$1,105

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sat 4/18

6:49 pm-9:40 am

2 stops24h 51m

Siem Reap–Angkor Intl

Wed 4/29

10:30 am-12:22 pm

2 stops39h 52m

$1,137

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 4/17

11:05 am-9:40 am

2 stops56h 35m

Siem Reap–Angkor Intl

Wed 4/29

10:30 am-12:22 pm

2 stops39h 52m

$1,143

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 4/20

6:00 am-9:40 am

2 stops37h 40m

Siem Reap–Angkor Intl

Wed 4/29

10:30 am-12:22 pm

2 stops39h 52m

$1,149

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 3/30

6:00 am-9:40 am

2 stops37h 40m

Siem Reap–Angkor Intl

Sun 4/12

10:30 am-12:14 pm

2 stops39h 44m

$1,335

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 4/3

6:00 am-9:40 am

2 stops37h 40m

Siem Reap–Angkor Intl

Sun 4/12

10:30 am-10:45 pm

2 stops50h 15m

$1,373

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Thu 4/2

11:05 am-9:40 am

2 stops56h 35m

Siem Reap–Angkor Intl

Sun 4/12

10:30 am-10:45 pm

2 stops50h 15m

$1,379

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Thu 4/16

11:05 am-9:40 am

2 stops56h 35m

Siem Reap–Angkor Intl

Wed 4/29

10:30 am-12:22 pm

2 stops39h 52m

$1,384

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to 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

What is the cheapest airline that flies from Ontario to Siem Reap–Angkor Intl?

United Airlines is the most popular carrier operating from Ontario to Siem Reap–Angkor Intl

When to book flights from Ontario to Siem Reap

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

Estimated round-trip price

Cheap Ontario to Siem Reap (ONT to SAI) flight deals and tips

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

Fastest flight time	29h 35m
Direct flights	None

The fastest flight from Ontario to Siem Reap takes 29h 35m

There are no direct flights from Ontario to Siem Reap. There are no popular flight routes from Ontario to Siem Reap.

Search flight deals

How far is Ontario to Siem Reap–Angkor Intl by plane?
The distance between Ontario and Siem Reap–Angkor Intl is about 8168.6 mi. A reasonable flight in good conditions will take 29h 35m.
When did momondo last update prices for flights from Ontario Airport to Siem Reap–Angkor Intl Airport?
Prices for flights from Ontario Airport to Siem Reap–Angkor Intl Airport are updated daily.
How old do you have to be to fly from Ontario Airport to Siem Reap–Angkor Intl Airport?
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 Ontario Airport to Siem Reap–Angkor Intl Airport.
What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?
The necessary travel and health documents for your Siem Reap–Angkor Intl Airport 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.

Why use momondo?

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

Finding the right flight to Siem Reap from Ontario 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 Ontario to Siem Reap with flexible booking policies on momondo?

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

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

Once you have performed a search for Ontario to Siem Reap flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Ontario to Siem Reap flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your 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.

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Cheap flights from Ontario to Siem Reap from $582

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Siem Reap departing on 2/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ontario to Siem Reap

Cheap round-trip flights

Cheap one-way flights

United Airlines flights from Ontario to Siem Reap

Our best United Airlines deals on Ontario to Siem Reap flight tickets

Qatar Airways flights from Ontario to Siem Reap

Our best Qatar Airways deals on Ontario to Siem Reap flight tickets

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Use the filters below to find and compare flights from Ontario to Siem Reap that are best for you.

See travel insights to Siem Reap from

How to get the cheapest flight ticket from Ontario to Siem Reap

What is the cheapest airline that flies from Ontario to Siem Reap–Angkor Intl?

United Airlines is the most popular carrier operating from Ontario to Siem Reap–Angkor Intl

When to book flights from Ontario to Siem Reap

Cheap Ontario to Siem Reap (ONT to SAI) flight deals and tips

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

Fastest flight time

Direct flights

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

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

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

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

Why use momondo?

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

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

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

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

An easier way to manage your 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 Cambodia

Fly your favorite airline to Siem Reap

Airlines are sorted and displayed according to clicks in the past 7 days on momondo