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

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

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario 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.

$662 Cheap Flights from Ontario to Siem Reap in 2026

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Find the cheapest flights from Ontario to Siem Reap

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:56 pm - 9:40 am

ONT

SAI

29h 44m

2 stops

10:30 am - 3:22 pm

SAI

ONT

42h 52m

2 stops

$1,275Singapore Airlines

Tue, Sep 1 - Wed, Sep 30

7:13 pm - 9:40 am

ONT

SAI

48h 27m

2 stops

10:30 am - 12:12 pm

SAI

ONT

39h 42m

2 stops

$1,369United Airlines

Sun, Aug 16 - Wed, Aug 26

12:45 am - 9:00 am

ONT

SAI

42h 15m

2 stops

7:35 pm - 6:40 pm

SAI

ONT

37h 05m

2 stops

$1,371Multiple Airlines

Sat, Aug 15 - Wed, Aug 26

6:00 am - 3:55 pm

ONT

SAI

42h 55m

2 stops

10:45 am - 3:27 pm

SAI

ONT

43h 42m

2 stops

$1,372United Airlines

Sun, Nov 1 - Sun, Nov 8

12:00 pm - 9:00 am

ONT

SAI

31h 00m

3 stops

9:40 am - 5:05 pm

SAI

ONT

21h 25m

2 stops

$1,553Multiple Airlines

Tue, Sep 1 - Wed, Sep 30

1:50 pm - 9:40 am

ONT

SAI

29h 50m

2 stops

10:30 am - 10:37 pm

SAI

ONT

50h 07m

2 stops

$1,559United Airlines

Mon, Jul 13 - Sun, Jul 26

1:50 pm - 9:40 am

ONT

SAI

53h 50m

2 stops

10:30 am - 10:37 pm

SAI

ONT

50h 07m

2 stops

$1,565United Airlines

Sun, Jul 12 - Sun, Jul 26

6:00 am - 9:40 am

ONT

SAI

37h 40m

2 stops

10:30 am - 12:12 pm

SAI

ONT

39h 42m

2 stops

$1,566United Airlines

Mon, Jul 13 - Fri, Jul 24

1:50 pm - 9:40 am

ONT

SAI

53h 50m

2 stops

10:30 am - 12:12 pm

SAI

ONT

39h 42m

2 stops

$1,572United Airlines

Sun, Jul 12 - Fri, Jul 24

1:50 pm - 9:40 am

ONT

SAI

29h 50m

2 stops

10:30 am - 10:37 pm

SAI

ONT

50h 07m

2 stops

$1,609Multiple Airlines

Mon, Jul 13 - Mon, Jul 27

United Airlines flights from Ontario to Region of Siem Reap

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

United Airlines

Aug 16

ONT7:13 pmOntario

48h 27m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Aug 26

SAI10:30 amSiem Reap–Angkor Intl

39h 42m

2 stops

ONT12:12 pmOntario

$1,369

United Airlines

Nov 1

ONT6:00 amOntario

42h 55m

2 stops

SAI3:55 pmSiem Reap–Angkor Intl

Nov 8

SAI10:45 amSiem Reap–Angkor Intl

43h 42m

2 stops

ONT3:27 pmOntario

$1,372

United Airlines

Jul 13

ONT1:50 pmOntario

29h 50m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Jul 26

SAI10:30 amSiem Reap–Angkor Intl

50h 07m

2 stops

ONT10:37 pmOntario

$1,559

ANA flights from Ontario to Region of Siem Reap

Our best ANA deals on Ontario to Region of Siem Reap flight tickets

ANA

Jul 1

ONT6:39 pmOntario

25h 01m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Aug 19

SAI10:30 amSiem Reap–Angkor Intl

47h 31m

3 stops

ONT8:01 pmOntario

$1,661

ANA

Jul 1

ONT5:00 amOntario

46h 10m

3 stops

SAI5:10 pmSiem Reap–Angkor Intl

Aug 19

SAI10:30 amSiem Reap–Angkor Intl

47h 31m

3 stops

ONT8:01 pmOntario

$1,678

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Tue 9/1

1:56 pm-9:40 am

2 stops29h 44m

Siem Reap–Angkor Intl

Wed 9/30

10:30 am-3:22 pm

2 stops42h 52m

$1,275

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sun 8/16

7:13 pm-9:40 am

2 stops48h 27m

Siem Reap–Angkor Intl

Wed 8/26

10:30 am-12:12 pm

2 stops39h 42m

$1,369

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sat 8/15

12:45 am-9:00 am

2 stops42h 15m

Siem Reap–Angkor Intl

Wed 8/26

7:35 pm-6:40 pm

2 stops37h 05m

$1,371

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sun 11/1

6:00 am-3:55 pm

2 stops42h 55m

Siem Reap–Angkor Intl

Sun 11/8

10:45 am-3:27 pm

2 stops43h 42m

$1,372

Quickest round-trip

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Tue 9/1

12:00 pm-9:00 am

3 stops31h 00m

Siem Reap–Angkor Intl

Wed 9/30

9:40 am-5:05 pm

2 stops21h 25m

$1,553

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 7/13

1:50 pm-9:40 am

2 stops29h 50m

Siem Reap–Angkor Intl

Sun 7/26

10:30 am-10:37 pm

2 stops50h 07m

$1,559

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sun 7/12

1:50 pm-9:40 am

2 stops53h 50m

Siem Reap–Angkor Intl

Sun 7/26

10:30 am-10:37 pm

2 stops50h 07m

$1,565

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 7/13

6:00 am-9:40 am

2 stops37h 40m

Siem Reap–Angkor Intl

Fri 7/24

10:30 am-12:12 pm

2 stops39h 42m

$1,566

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sun 7/12

1:50 pm-9:40 am

2 stops53h 50m

Siem Reap–Angkor Intl

Fri 7/24

10:30 am-12:12 pm

2 stops39h 42m

$1,572

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 7/13

1:50 pm-9:40 am

2 stops29h 50m

Siem Reap–Angkor Intl

Mon 7/27

10:30 am-10:37 pm

2 stops50h 07m

$1,609

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario 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

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

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

Cheap Ontario to Region of Siem Reap flight deals and tips

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

Fastest flight time	29h 50m
Direct flights	None

The fastest flight from Ontario to Region of Siem Reap takes 29h 50m

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

Search flight deals

Frequently asked questions about flying from Ontario to Siem Reap

When did momondo last update prices for flights from Ontario Airport to Siem Reap?
Prices for flights from Ontario Airport to Siem Reap are refreshed on a daily basis.
How old do you have to be to fly from Ontario Airport to Siem Reap?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario 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.

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?

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

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

momondo helps you find the best flight between Ontario and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

An easier way to manage your Region of Siem Reap trip

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Cheap flights from Ontario to Siem Reap from $662

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 10/14. 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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Find the cheapest flights from Ontario to Siem Reap

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United Airlines flights from Ontario to Region of Siem Reap

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

ANA flights from Ontario to Region of Siem Reap

Our best ANA deals on Ontario to Region of Siem Reap flight tickets

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

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

Cheap Ontario to Region of Siem Reap flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario 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

Ontario 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

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

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.

Complete your trip to Siem Reap

Explore popular destinations other users love

According to popular flight searches on momondo this year