What is the cheapest airline that flies from Ontario to Chiang Mai?

EVA Air is the most popular carrier operating from Ontario to Chiang Mai

What airlines fly to Chiang Mai?

EVA Air, Asiana Airlines and China Airlines are the top three most popular airlines that fly to Chiang Mai from Ontario according to our data. EVA Air is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Chiang Mai. Keep in mind that there are 8 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Chiang Mai Airport?

Prices for flights from Ontario Airport to Chiang Mai Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Chiang Mai Airport?

As of January 2026, there is 1 operator available to choose from for flights from Ontario Airport to Chiang Mai Airport.

How old do you have to be to fly from Ontario Airport to Chiang Mai Airport?

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 Chiang Mai Airport.

What documentation or ID do you need to fly to Chiang Mai Airport?

The travel and health documents required for your trip to Chiang Mai Airport 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 Chiang Mai Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$341 Cheap Flights from Ontario to Chiang Mai in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Chiang Mai

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:30 pm - 10:55 pm

ONT

CNX

40h 25m

2 stops

12:15 am - 10:37 pm

CNX

ONT

37h 22m

2 stops

$823Delta

Wed, Feb 18 - Thu, Feb 26

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$832China Airlines

Tue, Mar 31 - Thu, Apr 30

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$850China Airlines

Fri, Apr 10 - Sat, Apr 18

6:00 am - 10:20 am

ONT

CNX

38h 20m

2 stops

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$906China Airlines

Mon, Apr 6 - Thu, Apr 30

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$907China Airlines

Sun, Mar 29 - Fri, Apr 10

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$935China Airlines

Wed, Apr 22 - Mon, Apr 27

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$936China Airlines

Wed, Apr 22 - Mon, Apr 27

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$956China Airlines

Mon, Mar 30 - Fri, Apr 10

12:10 am - 1:00 pm

ONT

CNX

22h 50m

2 stops

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$964Multiple Airlines

Sat, Mar 28 - Fri, Apr 10

6:14 am - 10:25 am

ONT

CNX

37h 11m

2 stops

11:25 am - 4:50 pm

CNX

ONT

20h 25m

1 stop

$984Multiple Airlines

Tue, Feb 24 - Wed, Mar 4

China Airlines flights from Ontario to Chiang Mai

Our best China Airlines deals on Ontario to Chiang Mai flight tickets

China Airlines

Mar 31

ONT12:10 amOntario

20h 10m

1 stop

CNX10:20 amChiang Mai

Apr 30

CNX11:20 amChiang Mai

20h 40m

1 stop

ONT6:00 pmOntario

$832

China Airlines

Apr 10

ONT12:10 amOntario

20h 10m

1 stop

CNX10:20 amChiang Mai

Apr 18

CNX11:20 amChiang Mai

20h 40m

1 stop

ONT6:00 pmOntario

$850

China Airlines

Apr 6

ONT6:00 amOntario

38h 20m

2 stops

CNX10:20 amChiang Mai

Apr 30

CNX11:20 amChiang Mai

20h 40m

1 stop

ONT6:00 pmOntario

$906

Korean Air flights from Ontario to Chiang Mai

Our best Korean Air deals on Ontario to Chiang Mai flight tickets

Korean Air

Feb 26

ONT7:30 amOntario

24h 25m

2 stops

CNX10:55 pmChiang Mai

Mar 5

CNX12:15 amChiang Mai

28h 39m

2 stops

ONT1:54 pmOntario

$1,470

Korean Air

Feb 25

ONT7:30 amOntario

24h 25m

2 stops

CNX10:55 pmChiang Mai

Mar 5

CNX12:15 amChiang Mai

28h 39m

2 stops

ONT1:54 pmOntario

$1,545

Korean Air

Feb 27

ONT7:30 amOntario

24h 25m

2 stops

CNX10:55 pmChiang Mai

Mar 5

CNX12:15 amChiang Mai

28h 39m

2 stops

ONT1:54 pmOntario

$1,727

Fly from

Fly to

Route

Depart

Return

Price

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 2/18

3:30 pm-10:55 pm

2 stops40h 25m

Chiang Mai

Thu 2/26

12:15 am-10:37 pm

2 stops37h 22m

$823

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Tue 3/31

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Thu 4/30

11:20 am-6:00 pm

1 stop20h 40m

$832

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Fri 4/10

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Sat 4/18

11:20 am-6:00 pm

1 stop20h 40m

$850

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 4/6

6:00 am-10:20 am

2 stops38h 20m

Chiang Mai

Thu 4/30

11:20 am-6:00 pm

1 stop20h 40m

$906

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sun 3/29

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Fri 4/10

11:20 am-6:00 pm

1 stop20h 40m

$907

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 4/22

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Mon 4/27

11:20 am-6:00 pm

1 stop20h 40m

$935

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 4/22

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Mon 4/27

11:20 am-6:00 pm

1 stop20h 40m

$936

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 3/30

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Fri 4/10

11:20 am-6:00 pm

1 stop20h 40m

$956

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 3/28

12:10 am-1:00 pm

2 stops22h 50m

Chiang Mai

Fri 4/10

11:20 am-6:00 pm

1 stop20h 40m

$964

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Tue 2/24

6:14 am-10:25 am

2 stops37h 11m

Chiang Mai

Wed 3/4

11:25 am-4:50 pm

1 stop20h 25m

$984

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Chiang Mai

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

Prices

Airlines

Can stopping save me money on Ontario to Chiang Mai flights?

You could potentially save up to 57% on your flight if you consider stops on a Ontario to Chiang Mai flight.

When to book flights from Ontario to Chiang Mai

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

Estimated round-trip price

Cheap Ontario to Chiang Mai (ONT to CNX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Chiang Mai

Fastest flight time	23h 30m
Direct flights	None

The fastest flight from Ontario to Chiang Mai takes 23h 30m

There are no direct flights from Ontario to Chiang Mai. There are no popular flight routes from Ontario to Chiang Mai.

Search flight deals

How far is Ontario to Chiang Mai by plane?
Ontario and Chiang Mai are 8055.9 mi apart from one another. Flights usually cover this in 23h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Ontario Airport to Chiang Mai Airport?
Prices for flights from Ontario Airport to Chiang Mai Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Chiang Mai Airport?
As of January 2026, there is 1 operator available to choose from for flights from Ontario Airport to Chiang Mai Airport.
How old do you have to be to fly from Ontario Airport to Chiang Mai Airport?
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 Chiang Mai Airport.
What documentation or ID do you need to fly to Chiang Mai Airport?
The travel and health documents required for your trip to Chiang Mai Airport 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 Chiang Mai Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ontario to Chiang Mai?
Based on momondo bookings for flights between Ontario and Chiang Mai, the leading airline is China Airlines, making up 100% of the total bookings.

Best airlines flying from Ontario to Chiang Mai

Compare and see reviews for airlines that fly from Ontario to Chiang Mai with momondo

Airline	Rating	Free Cancellation	Price
China Airlines	PriceFrom $796	Free Cancellation	Rating 8.3 802 reviews		Search China Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Chiang Mai?

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

Can I find flights from Ontario to Chiang Mai with flexible booking policies on momondo?

Flights from Ontario to Chiang Mai with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Chiang Mai?

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 Ontario to Chiang Mai.

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

Yes momondo offers price alerts on flights to Chiang Mai from Ontario. 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.