ONT - CNX

$376 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 2/18. 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

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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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

Mon, Mar 9 - Wed, Mar 11
Korean Air Logo
6:45 am - 10:55 pmONT-CNX
26h 10m2 stops
Korean Air Logo
12:15 am - 10:38 pmCNX-ONT
36h 23m2 stops
$714Korean Air
Find Deal
Fri, Jan 30 - Sun, Feb 15
Multiple Airlines Logo
9:45 pm - 9:00 pmONT-CNX
32h 15m2 stops
Multiple Airlines Logo
9:40 pm - 4:30 pmCNX-ONT
33h 50m2 stops
$743Multiple Airlines
Find Deal
Sat, Jan 31 - Wed, Apr 22
Multiple Airlines Logo
9:45 pm - 9:00 pmONT-CNX
32h 15m2 stops
Multiple Airlines Logo
10:10 am - 5:05 pmCNX-ONT
20h 55m2 stops
$765Multiple Airlines
Find Deal
Sat, Jan 31 - Wed, Apr 22
China Airlines Logo
10:50 pm - 4:35 pmONT-CNX
26h 45m1 stop
China Airlines Logo
11:20 am - 6:00 pmCNX-ONT
20h 40m1 stop
$780China Airlines
Find Deal
Mon, Nov 17 - Wed, Dec 3
Korean Air Logo
6:45 am - 10:55 pmONT-CNX
25h 10m2 stops
Korean Air Logo
12:15 am - 10:47 pmCNX-ONT
37h 32m2 stops
$797Korean Air
Find Deal
Wed, Nov 12 - Wed, Feb 11
China Airlines Logo
10:50 pm - 10:25 amONT-CNX
20h 35m1 stop
China Airlines Logo
11:25 am - 4:50 pmCNX-ONT
20h 25m1 stop
$813China Airlines
Find Deal
Mon, Mar 9 - Thu, Mar 12
China Airlines Logo
11:50 pm - 10:25 amONT-CNX
20h 35m1 stop
China Airlines Logo
11:25 am - 5:50 pmCNX-ONT
20h 25m1 stop
$814China Airlines
Find Deal
Mon, Nov 10 - Sun, Nov 16
China Airlines Logo
10:50 pm - 10:25 amONT-CNX
20h 35m1 stop
China Airlines Logo
11:25 am - 4:50 pmCNX-ONT
20h 25m1 stop
$850China Airlines
Find Deal
Tue, Jan 13 - Wed, Jan 21
EVA Air Logo
4:03 pm - 10:35 amONT-CNX
27h 32m2 stops
EVA Air Logo
11:50 am - 10:59 amCNX-ONT
38h 09m2 stops
$1,029EVA Air
Find Deal
Wed, Nov 12 - Tue, Feb 10
Delta Logo
5:49 pm - 10:55 pmONT-CNX
38h 06m2 stops
Delta Logo
12:15 am - 3:20 pmCNX-ONT
30h 05m2 stops
$1,530Delta
Find Deal

Everything you should know

Top airlines
Korean Air
Cheapest • from $714 (round-trip)
China Airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$714
Korean Air
Mon 3/9Wed 3/11
ONT - CNX • 2 stops
Cheapest one-way
$376
Delta
Wed 2/18
ONT - CNX • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
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 Korean Air ($714) and China Airlines ($780).

Which airlines fly non-stop between Ontario and Chiang Mai?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Chiang Mai.

There is just one airline that flies from Ontario to Chiang Mai direct and that is China Airlines. The best round-trip deal found from China Airlines for the route is $796.

Good to know

Cheapest flight$376
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 $376 for a one-way ticket and $714 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 768 reviews
7.8Food
8.5Crew
8.0Comfort
8.0Entertainment
8.3Boarding
Airline reviews

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

10.0 ExcellentRains, Sep 2025BNE - TPE
Read more China Airlines reviews

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

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.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

Better organization of boarding procedures. Terrible leadership guiding people to gates.

I did not like how the plane landed. It was not smooth.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Staff was so nice and very helpful with directions aswell!

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

Information on your arrival and departure airports

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