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Cheap flights from Ontario to Chiang Mai from $474

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 Chiang Mai departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ontario to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Airlines Logo
12:45 am - 10:20 am
ONT
-
CNX
19h 35m
1 stop
China Airlines Logo
11:20 am - 6:40 pm
CNX
-
ONT
21h 20m
1 stop
$873China Airlines
Sat, Aug 15 - Thu, Aug 27
China Airlines Logo
12:10 am - 10:20 am
ONT
-
CNX
20h 10m
1 stop
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$887China Airlines
Wed, Sep 16 - Mon, Sep 21
China Airlines Logo
12:10 am - 10:20 am
ONT
-
CNX
20h 10m
1 stop
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$957China Airlines
Wed, Sep 16 - Mon, Sep 21
China Airlines Logo
12:10 am - 10:20 am
ONT
-
CNX
20h 10m
1 stop
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$965China Airlines
Sat, Apr 18 - Wed, May 13
China Airlines Logo
12:45 am - 10:20 am
ONT
-
CNX
19h 35m
1 stop
China Airlines Logo
11:20 am - 6:40 pm
CNX
-
ONT
21h 20m
1 stop
$971China Airlines
Sat, Aug 8 - Thu, Aug 20
China Airlines Logo
12:10 am - 10:20 am
ONT
-
CNX
20h 10m
1 stop
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$985China Airlines
Sat, Apr 18 - Mon, May 11
Multiple Airlines Logo
11:10 pm - 7:10 pm
ONT
-
CNX
30h 00m
2 stops
Multiple Airlines Logo
11:55 am - 5:05 pm
CNX
-
ONT
43h 10m
2 stops
$989Multiple Airlines
Sat, Apr 25 - Sun, May 3
Multiple Airlines Logo
12:45 am - 1:45 pm
ONT
-
CNX
23h 00m
2 stops
Multiple Airlines Logo
11:20 am - 6:40 pm
CNX
-
ONT
21h 20m
1 stop
$1,000Multiple Airlines
Sat, Aug 15 - Thu, Aug 27
China Airlines Logo
12:10 am - 11:15 am
ONT
-
CNX
45h 05m
2 stops
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$1,011China Airlines
Wed, Sep 16 - Mon, Sep 21
Multiple Airlines Logo
12:45 am - 2:15 pm
ONT
-
CNX
23h 30m
2 stops
Multiple Airlines Logo
11:20 am - 6:40 pm
CNX
-
ONT
21h 20m
1 stop
$1,019Multiple Airlines
Tue, Aug 18 - Mon, Aug 31

China Airlines flights from Ontario to Chiang Mai

Our best China Airlines deals on Ontario to Chiang Mai flight tickets
China Airlines
Aug 15
ONT12:45 amOntario
19h 35m
1 stop
CNX10:20 amChiang Mai
Aug 27
CNX11:20 amChiang Mai
21h 20m
1 stop
ONT6:40 pmOntario
$873
China Airlines
Sep 16
ONT12:10 amOntario
20h 10m
1 stop
CNX10:20 amChiang Mai
Sep 21
CNX11:20 amChiang Mai
20h 40m
1 stop
ONT6:00 pmOntario
$887
China Airlines
Sep 16
ONT12:10 amOntario
20h 10m
1 stop
CNX10:20 amChiang Mai
Sep 21
CNX11:20 amChiang Mai
20h 40m
1 stop
ONT6:00 pmOntario
$957

EVA Air flights from Ontario to Chiang Mai

Our best EVA Air deals on Ontario to Chiang Mai flight tickets
EVA Air
Aug 19
ONT7:57 pmOntario
24h 28m
2 stops
CNX10:25 amChiang Mai
Aug 31
CNX11:35 amChiang Mai
40h 33m
2 stops
ONT2:08 pmOntario
$1,246
EVA Air
Apr 12
ONT7:08 pmOntario
25h 17m
2 stops
CNX10:25 amChiang Mai
Apr 20
CNX11:35 amChiang Mai
26h 24m
2 stops
ONT11:59 pmOntario
$8,017

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Chiang Mai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 2, 2026.
Use the filters below to find and compare flights from Ontario to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 8/15

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Thu 8/27

11:20 am-6:40 pm

1 stop21h 20m

$873
Quickest round-trip

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 9/16

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Mon 9/21

11:20 am-6:00 pm

1 stop20h 40m

$887

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 9/16

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Mon 9/21

11:20 am-6:00 pm

1 stop20h 40m

$957

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 4/18

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Wed 5/13

11:20 am-6:00 pm

1 stop20h 40m

$965

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 8/8

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Thu 8/20

11:20 am-6:40 pm

1 stop21h 20m

$971

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 4/18

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Mon 5/11

11:20 am-6:00 pm

1 stop20h 40m

$985

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 4/25

11:10 pm-7:10 pm

2 stops30h 00m

Chiang Mai

Sun 5/3

11:55 am-5:05 pm

2 stops43h 10m

$989

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 8/15

12:45 am-1:45 pm

2 stops23h 00m

Chiang Mai

Thu 8/27

11:20 am-6:40 pm

1 stop21h 20m

$1,000

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 9/16

12:10 am-11:15 am

2 stops45h 05m

Chiang Mai

Mon 9/21

11:20 am-6:00 pm

1 stop20h 40m

$1,011

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Tue 8/18

12:45 am-2:15 pm

2 stops23h 30m

Chiang Mai

Mon 8/31

11:20 am-6:40 pm

1 stop21h 20m

$1,019

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chiang Mai from

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

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

You could potentially save up to 67% 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.
Search flight deals

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?

  • 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?

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 AirlinesPriceFrom $796Free CancellationRating
8.3
815 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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