ONT - CNX

$434 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 8/26. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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

Wed, Sep 17 - Fri, Sep 19
Delta Logo
6:00 am - 9:55 pmONT-CNX
25h 55m2 stops
Delta Logo
11:15 pm - 10:41 pmCNX-ONT
37h 26m2 stops
$778Delta
Find Deal
Sun, Oct 26 - Sun, Nov 9
Delta Logo
9:50 am - 11:05 pmONT-CNX
47h 15m2 stops
Delta Logo
12:15 am - 5:17 pmCNX-ONT
32h 02m2 stops
$784Delta
Find Deal
Thu, Nov 6 - Thu, Nov 13
Delta Logo
5:50 pm - 11:05 pmONT-CNX
38h 15m2 stops
Delta Logo
12:15 am - 11:46 pmCNX-ONT
38h 31m2 stops
$785Delta
Find Deal
Sat, Feb 14 - Tue, Feb 24
Korean Air Logo
6:45 am - 11:05 pmONT-CNX
25h 20m2 stops
Korean Air Logo
12:15 am - 3:20 pmCNX-ONT
30h 05m2 stops
$819Korean Air
Find Deal
Sun, Oct 26 - Mon, Nov 3
Korean Air Logo
6:37 am - 11:05 pmONT-CNX
26h 28m2 stops
Korean Air Logo
12:15 am - 5:10 pmCNX-ONT
31h 55m2 stops
$820Korean Air
Find Deal
Sat, Feb 14 - Mon, Feb 23
Delta Logo
4:00 pm - 11:05 pmONT-CNX
40h 05m2 stops
Delta Logo
12:15 am - 10:38 pmCNX-ONT
37h 23m2 stops
$833Delta
Find Deal
Mon, Sep 22 - Sat, Oct 4
China Airlines Logo
12:10 am - 10:20 amONT-CNX
20h 10m1 stop
China Airlines Logo
11:20 am - 6:00 pmCNX-ONT
20h 40m1 stop
$839China Airlines
Find Deal
Mon, Oct 27 - Thu, Nov 6
China Airlines Logo
11:50 pm - 10:25 amONT-CNX
20h 35m1 stop
China Airlines Logo
11:25 am - 4:50 pmCNX-ONT
20h 25m1 stop
$849China Airlines
Find Deal
Wed, Jan 7 - Tue, Mar 10
Logo
9:45 pm - 7:00 pmONT-CNX
30h 15m2 stops
Logo
7:45 pm - 4:50 pmCNX-ONT
35h 05m2 stops
$882
Find Deal
Wed, Nov 12 - Wed, Feb 11
Logo
9:45 pm - 7:00 pmONT-CNX
30h 15m2 stops
Logo
10:10 am - 4:30 pmCNX-ONT
21h 20m2 stops
$902
Find Deal
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 Delta ($778) and Korean Air ($819).

Find deals

Good to know

Cheapest flight$434
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 $434 for a one-way ticket and $778 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, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Chiang Mai, with SkyTeam being the most commonly used for this route.

  • 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 764 reviews
7.8Food
8.5Crew
8.0Comfort
8.3Boarding
8.0Entertainment
Airline reviews

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

10.0 ExcellentAshley, Jul 2025LAX - DFW
Read more China Airlines reviews

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.

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!

Most relaxing long distance flight I have been on. And I have flown on many.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

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

Information on your arrival and departure airports

Ontario (ONT)
Chiang Mai (CNX)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.