ONT - CNX

$369 Find Cheap Flights from Ontario to Chiang Mai

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Chiang Mai departing on 3/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Chiang Mai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Chiang Mai, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$794
China Airlines
Tue 5/12Sun 5/24
ONT - CNX • 1 stop
Cheapest one-way
$369
Korean Air
Mon 3/16
ONT - CNX • 2 stops
Top airlines
China Airlines
Cheapest • from $794 (round-trip)
China Airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Chiang Mai. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Incheon (ICN)
Cheapest • Avg $756 (round-trip)
Taipei City (TPE)
Shortest trip • 20h 48m (one-way)
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Chiang Mai (ONT-CNX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Chiang Mai that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Chiang Mai

Tue, May 12 - Sun, May 24
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
$794China Airlines
Sat, Aug 15 - Thu, Aug 27
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
$812China Airlines
Fri, May 8 - Sat, May 23
China Airlines Logo
12:10 am - 7:10 pm
ONT
-
CNX
29h 00m
2 stops
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$882China Airlines
Tue, May 12 - Sun, May 24
Multiple Airlines Logo
12:10 am - 1:45 pm
ONT
-
CNX
23h 35m
2 stops
Multiple Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$883Multiple Airlines
Sun, Mar 29 - Fri, Apr 24
China Airlines Logo
12:10 am - 7:10 pm
ONT
-
CNX
29h 00m
2 stops
China Airlines Logo
11:20 am - 6:00 pm
CNX
-
ONT
20h 40m
1 stop
$884China Airlines
Sat, Aug 15 - Sat, Aug 22
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
$910China Airlines
Sat, Aug 15 - Thu, Aug 27
China Airlines Logo
12:45 am - 10:20 am
ONT
-
CNX
19h 35m
1 stop
China Airlines Logo
11:20 am - 11:09 am
CNX
-
ONT
37h 49m
2 stops
$959China Airlines
Wed, Apr 22 - Sat, May 9
Multiple Airlines Logo
12:10 am - 4:50 pm
ONT
-
CNX
26h 40m
2 stops
Multiple Airlines Logo
6:35 am - 6:00 pm
CNX
-
ONT
25h 25m
2 stops
$969Multiple Airlines
Sun, Aug 16 - Sat, Aug 22
China Airlines Logo
9:13 pm - 10:20 am
ONT
-
CNX
23h 07m
2 stops
China Airlines Logo
11:20 am - 6:40 pm
CNX
-
ONT
21h 20m
1 stop
$990China Airlines
Tue, May 12 - Sun, May 24
Multiple Airlines Logo
12:10 am - 1:45 pm
ONT
-
CNX
23h 35m
2 stops
Multiple Airlines Logo
2:35 pm - 6:00 pm
CNX
-
ONT
41h 25m
2 stops
$995Multiple Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Chiang Mai flights

Get data-powered insights and trends into flights from Ontario to Chiang Mai to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Chiang Mai?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Chiang Mai were found on China Airlines ($794) and Korean Air ($1,331).

Good to know

Cheapest flight$369
Flight from Ontario to Chiang Mai

When to book flights from Ontario to Chiang Mai

Are your dates flexible? Find out the best times to travel from Ontario to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Chiang Mai

  • What is the cheapest flight from Ontario to Chiang Mai?

    In the last 3 days, the lowest price for a flight from Ontario to Chiang Mai was $369 for a one-way ticket and $794 for a round-trip.

  • Do I need a passport to fly between Ontario and Chiang Mai?

    Yes

  • Which aircraft models fly most regularly from Ontario to Chiang Mai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Chiang Mai?

    SkyTeam is the only airline alliance operating flights between Ontario and Chiang Mai.

  • How does KAYAK find such low prices on flights from Ontario to Chiang Mai?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Chiang Mai.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chiang Mai?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Chiang Mai?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chiang Mai with an airline and back to Ontario with another airline. Booking your flights between Ontario and CNX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Chiang Mai?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chiang Mai from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Chiang Mai. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Chiang Mai? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
China AirlinesOverall score based on 809 reviews
8.5Crew
8.0Entertainment
8.0Comfort
7.8Food
8.3Boarding
Airline reviews

Well, we upgraded and on a 14 hour flight not sure how we would tolerate it otherwise. The upgrades are ridiculously expensive and even with empty seats even in first class it was difficult to upgrade. Probably won’t fly China Air again due to this. The attendants tho were much better than the airlines in the states and there attentiveness and care for your comfort far exceeds other airlines in the states.

10.0 ExcellentEileen, Jan 2026
HAN - TPE
Read more China Airlines reviews

Well, we upgraded and on a 14 hour flight not sure how we would tolerate it otherwise. The upgrades are ridiculously expensive and even with empty seats even in first class it was difficult to upgrade. Probably won’t fly China Air again due to this. The attendants tho were much better than the airlines in the states and there attentiveness and care for your comfort far exceeds other airlines in the states.

Flight attendants. Food, entertainment and most of all, be on time.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

Everything you need to know for your flight from Ontario to Chiang Mai

Information on your arrival and departure airports