$417 Cheap Flights from Ontario to Chiang Mai in 2026 | momondo

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Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Chiang Mai

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

24h 55m2 stops Seattle/Tacoma Intl Incheon Intl

12:15 am - 1:57 pmCNX Chiang Mai-ONT Ontario

28h 42m2 stops Incheon Intl Seattle/Tacoma Intl

$802Korean Air

Mon, Jan 18 - Wed, Feb 3

7:04 am - 10:55 pmONT Ontario-CNX Chiang Mai

24h 51m2 stops Seattle/Tacoma Intl Incheon Intl

12:15 am - 5:13 pmCNX Chiang Mai-ONT Ontario

31h 58m2 stops Incheon Intl Seattle/Tacoma Intl

$803Korean Air

Mon, Nov 9 - Mon, Nov 30

7:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

24h 55m2 stops Seattle/Tacoma Intl Incheon Intl

12:15 am - 1:57 pmCNX Chiang Mai-ONT Ontario

28h 42m2 stops Incheon Intl Seattle/Tacoma Intl

$803Korean Air

Mon, Jan 18 - Wed, Feb 3

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 4:30 pmCNX Chiang Mai-ONT Ontario

31h 15m2 stops Incheon Intl Salt Lake City

$822Delta

Mon, Nov 2 - Tue, Nov 10

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 11:00 pmCNX Chiang Mai-ONT Ontario

37h 45m2 stops Incheon Intl Seattle/Tacoma Intl

$822Delta

Mon, Nov 2 - Wed, Nov 11

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 11:00 pmCNX Chiang Mai-ONT Ontario

37h 45m2 stops Incheon Intl Seattle/Tacoma Intl

$822Delta

Wed, Nov 4 - Wed, Nov 11

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 5:13 pmCNX Chiang Mai-ONT Ontario

31h 58m2 stops Incheon Intl Seattle/Tacoma Intl

$822Delta

Mon, Nov 9 - Wed, Nov 18

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 11:00 pmCNX Chiang Mai-ONT Ontario

37h 45m2 stops Incheon Intl Seattle/Tacoma Intl

$822Delta

Mon, Nov 9 - Tue, Dec 1

12:45 am - 10:20 amONT Ontario-CNX Chiang Mai

19h 35m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 6:40 pmCNX Chiang Mai-ONT Ontario

21h 20m1 stop Taipei City Taiwan Taoyuan Intl

$881China Airlines

Sun, Aug 23 - Mon, Sep 14

12:45 am - 10:20 amONT Ontario-CNX Chiang Mai

19h 35m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 6:40 pmCNX Chiang Mai-ONT Ontario

21h 20m1 stop Taipei City Taiwan Taoyuan Intl

$882China Airlines

Sun, Sep 6 - Thu, Sep 10

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China Airlines flights from Ontario to Chiang Mai

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

China Airlines

Sep 13

ONT12:45 amOntario

19h 35m

1 stop

CNX10:20 amChiang Mai

Sep 27

CNX11:20 amChiang Mai

20h 40m

1 stop

ONT6:00 pmOntario

$875

China Airlines

Aug 23

ONT12:45 amOntario

19h 35m

1 stop

CNX10:20 amChiang Mai

Sep 14

CNX11:20 amChiang Mai

21h 20m

1 stop

ONT6:40 pmOntario

$881

China Airlines

Aug 23

ONT12:45 amOntario

19h 35m

1 stop

CNX10:20 amChiang Mai

Sep 14

CNX11:20 amChiang Mai

21h 20m

1 stop

ONT6:40 pmOntario

$882

Qatar Airways flights from Ontario to Chiang Mai

Our best Qatar Airways deals on Ontario to Chiang Mai flight tickets

Qatar Airways

Aug 24

ONT6:02 amOntario

39h 13m

3 stops

CNX11:15 amChiang Mai

Sep 14

CNX8:00 pmChiang Mai

37h 03m

3 stops

ONT7:03 pmOntario

$1,396

Qatar Airways

Aug 24

ONT6:02 amOntario

37h 18m

3 stops

CNX9:20 amChiang Mai

Sep 14

CNX8:00 pmChiang Mai

61h 03m

3 stops

ONT7:03 pmOntario

$1,399

Qatar Airways

Aug 24

ONT12:00 pmOntario

31h 20m

3 stops

CNX9:20 amChiang Mai

Sep 14

CNX8:00 pmChiang Mai

61h 03m

3 stops

ONT7:03 pmOntario

$1,420

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 1/18

7:00 am-10:55 pm

2 stops24h 55m

Chiang Mai

Wed 2/3

12:15 am-1:57 pm

2 stops28h 42m

$802

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 11/9

7:04 am-10:55 pm

2 stops24h 51m

Chiang Mai

Mon 11/30

12:15 am-5:13 pm

2 stops31h 58m

$803

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 1/18

7:00 am-10:55 pm

2 stops24h 55m

Chiang Mai

Wed 2/3

12:15 am-1:57 pm

2 stops28h 42m

$803

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 11/2

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Tue 11/10

12:15 am-4:30 pm

2 stops31h 15m

$822

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 11/2

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Wed 11/11

12:15 am-11:00 pm

2 stops37h 45m

$822

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Wed 11/4

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Wed 11/11

12:15 am-11:00 pm

2 stops37h 45m

$822

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 11/9

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Wed 11/18

12:15 am-5:13 pm

2 stops31h 58m

$822

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Mon 11/9

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Tue 12/1

12:15 am-11:00 pm

2 stops37h 45m

$822

Quickest round-trip

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Sun 8/23

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Mon 9/14

11:20 am-6:40 pm

1 stop21h 20m

$881

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Sun 9/6

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Thu 9/10

11:20 am-6:40 pm

1 stop21h 20m

$882

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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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 17% 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	19h 35m
Direct flights	None

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

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

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Frequently asked questions about flying from Ontario to Chiang Mai

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 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 $742	Free Cancellation	Rating 8.3 841 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.

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