What airlines fly to Chiang Mai?

Asiana Airlines, EVA Air and China Airlines are the top three most popular airlines that fly to Chiang Mai from Ontario according to our data. Asiana Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Chiang Mai. Keep in mind that there are 7 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.

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

Delta, Korean Air, and China Airlines are the most popular carriers operating from Ontario to Chiang Mai

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 August 2025, 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.

$434 Cheap Flights from Ontario to Chiang Mai (ONT-CNX) in 2025

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Find the cheapest flights from Ontario to Chiang Mai (ONT-CNX)

Round-trip

One-way

Last minute

Cheap round-trip flights

6:43 am - 11:05 pmONT-CNX

25h 22m2 stops

12:15 am - 11:46 pmCNX-ONT

38h 31m2 stops

$778Delta

Find Deal

dom., nov. 9 - jue., nov. 20

6:37 am - 11:05 pmONT-CNX

25h 28m2 stops

12:15 am - 5:17 pmCNX-ONT

32h 02m2 stops

$784Korean Air

Find Deal

vie., nov. 7 - jue., nov. 20

6:37 am - 11:05 pmONT-CNX

25h 28m2 stops

12:15 am - 5:17 pmCNX-ONT

32h 02m2 stops

$820Korean Air

Find Deal

vie., nov. 7 - dom., nov. 23

10:50 pm - 10:25 amONT-CNX

20h 35m1 stop

11:25 am - 4:50 pmCNX-ONT

20h 25m1 stop

$861China Airlines

Find Deal

mié., nov. 12 - mié., feb. 11

10:50 pm - 10:25 amONT-CNX

20h 35m1 stop

11:25 am - 4:50 pmCNX-ONT

20h 25m1 stop

$863China Airlines

Find Deal

dom., nov. 9 - sáb., nov. 22

12:45 am - 10:20 amONT-CNX

19h 35m1 stop

11:20 am - 6:00 pmCNX-ONT

20h 40m1 stop

$865China Airlines

Find Deal

dom., ago. 31 - vie., oct. 17

9:45 pm - 7:00 pmONT-CNX

30h 15m2 stops

4:55 pm - 4:50 pmCNX-ONT

37h 55m1 stop

$888

Find Deal

mié., ene. 7 - mar., mar. 10

11:45 pm - 7:10 pmONT-CNX

29h 25m2 stops

5:20 pm - 5:05 pmCNX-ONT

37h 45m1 stop

$893

Find Deal

sáb., ago. 30 - jue., sep. 11

3:04 pm - 10:25 amONT-CNX

29h 21m2 stops

11:35 am - 12:03 amCNX-ONT

26h 28m2 stops

$1,176EVA Air

Find Deal

sáb., ago. 30 - jue., sep. 11

6:00 am - 1:45 pmONT-CNX

40h 45m3 stops

7:45 pm - 10:38 pmCNX-ONT

40h 53m3 stops

$1,530Qatar Airways

Find Deal

mié., ene. 7 - mar., mar. 10

Delta flights from Ontario to Chiang Mai

Our best Delta deals on Ontario to Chiang Mai flight tickets

Delta

Nov 9

ONT6:43 amOntario

25h 22m

2 stops

CNX11:05 pmChiang Mai

Nov 19

CNX12:15 amChiang Mai

32h 02m

2 stops

ONT5:17 pmOntario

$778

Find similar

Delta

Nov 9

ONT6:43 amOntario

25h 22m

2 stops

CNX11:05 pmChiang Mai

Nov 22

CNX12:15 amChiang Mai

32h 02m

2 stops

ONT5:17 pmOntario

$886

Find similar

Delta

Nov 12

ONT5:51 pmOntario

38h 14m

2 stops

CNX11:05 pmChiang Mai

Feb 10

CNX12:15 amChiang Mai

30h 05m

2 stops

ONT3:20 pmOntario

$905

Find similar

Korean Air flights from Ontario to Chiang Mai

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

Korean Air

Nov 7

ONT6:37 amOntario

25h 28m

2 stops

CNX11:05 pmChiang Mai

Nov 20

CNX12:15 amChiang Mai

32h 02m

2 stops

ONT5:17 pmOntario

$784

Find similar

Korean Air

Nov 7

ONT6:37 amOntario

25h 28m

2 stops

CNX11:05 pmChiang Mai

Nov 23

CNX12:15 amChiang Mai

32h 02m

2 stops

ONT5:17 pmOntario

$820

Find similar

Korean Air

Jan 7

ONT6:45 amOntario

25h 20m

2 stops

CNX11:05 pmChiang Mai

Mar 9

CNX12:15 amChiang Mai

31h 00m

2 stops

ONT5:15 pmOntario

$892

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 11/9

6:43 am-11:05 pm

2 stops25h 22m

Chiang Mai

jue. 11/20

12:15 am-11:46 pm

2 stops38h 31m

$778

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

vie. 11/7

6:37 am-11:05 pm

2 stops25h 28m

Chiang Mai

jue. 11/20

12:15 am-5:17 pm

2 stops32h 02m

$784

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

vie. 11/7

6:37 am-11:05 pm

2 stops25h 28m

Chiang Mai

dom. 11/23

12:15 am-5:17 pm

2 stops32h 02m

$820

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mié. 11/12

10:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

mié. 2/11

11:25 am-4:50 pm

1 stop20h 25m

$861

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 11/9

10:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

sáb. 11/22

11:25 am-4:50 pm

1 stop20h 25m

$863

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 8/31

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

vie. 10/17

11:20 am-6:00 pm

1 stop20h 40m

$865

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mié. 1/7

9:45 pm-7:00 pm

2 stops30h 15m

Chiang Mai

mar. 3/10

4:55 pm-4:50 pm

1 stop37h 55m

$888

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

sáb. 8/30

11:45 pm-7:10 pm

2 stops29h 25m

Chiang Mai

jue. 9/11

5:20 pm-5:05 pm

1 stop37h 45m

$893

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

sáb. 8/30

3:04 pm-10:25 am

2 stops29h 21m

Chiang Mai

jue. 9/11

11:35 am-12:03 am

2 stops26h 28m

$1,176

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mié. 1/7

6:00 am-1:45 pm

3 stops40h 45m

Chiang Mai

mar. 3/10

7:45 pm-10:38 pm

3 stops40h 53m

$1,530

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 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

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart from Ontario to Chiang Mai is on a Monday. Travelers who choose to depart for Chiang Mai on a Monday will often find tickets for as low as $909. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Chiang Mai for around $1,346.

What is the cheapest time of day to depart on your flight to Chiang Mai?

Flying to Chiang Mai from Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as $887 when looking at flights departing in the morning. Flights to Chiang Mai are more costly in the evening, with an average ticket price of $1,104. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

Best Price Found	$434
Fastest flight time	19h 35m
Direct flights	None
Airports in Chiang Mai	1 airport

The best one-way flight to Chiang Mai from Ontario in the past 72 hours is $434. The best round-trip flight deal from Ontario to Chiang Mai found on momondo in the last 72 hours is $778.

The fastest flight from Ontario to Chiang Mai takes 19h 35m

There are no direct flights from Ontario to Chiang Mai. Popular non-direct route for this connection is Ontario Airport - Chiang Mai Airport.

There is 1 airport near Chiang Mai: Chiang Mai (CNX)

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 19h 35m, 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 August 2025, 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 8.3 762 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.