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Chiang Mai

$406+ Cheap flights from Ontario (ONT) to Chiang Mai (CNX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CNX
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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Find flight deals from Ontario to Chiang Mai

Cheapest flights from Ontario to Chiang Mai
Explore the most affordable flight options available from Ontario to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 29, 2025.

This oojo deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/2610:50 pmONT - CNX
1 stop20h 35mChina Airlines
jue. 12/411:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/27$772
This FlightHub deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/910:50 pmONT - CNX
1 stop20h 35mChina Airlines
jue. 12/2511:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/27$794
This FlightHub deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1210:50 pmONT - CNX
1 stop20h 35mChina Airlines
mié. 2/1111:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/28$795
This Korean Air deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/126:45 amONT - CNX
2 stops25h 10mKorean Air
mié. 11/2612:15 amCNX - ONT
2 stops33h 03mKorean Air
Deal found 10/27$797
This oojo deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/1010:50 pmONT - CNX
1 stop20h 35mChina Airlines
mié. 11/1911:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/27$814
This China Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2811:50 pmONT - CNX
1 stop20h 35mChina Airlines
jue. 12/1811:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/28$829
This FlightHub deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1210:50 pmONT - CNX
1 stop20h 35mMultiple Airlines
mié. 2/1110:10 amCNX - ONT
2 stops21h 40mMultiple Airlines
Deal found 10/28$845
This Korean Air deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/126:45 amONT - CNX
2 stops25h 10mKorean Air
mar. 2/1012:15 amCNX - ONT
2 stops28h 41mKorean Air
Deal found 10/28$868
This China Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2811:50 pmONT - CNX
1 stop20h 35mChina Airlines
lun. 12/155:35 pmCNX - ONT
1 stop38h 15mChina Airlines
Deal found 10/28$870
This oojo deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1210:50 pmONT - CNX
1 stop20h 35mChina Airlines
jue. 11/2711:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/27$895
This China Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/2911:50 pmONT - CNX
1 stop20h 35mChina Airlines
sáb. 12/1311:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 10/28$906

Cheap flight deals from Ontario to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated octubre 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$709
(Delta)

One-way from

$406
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$895
Provider with most accurate pricing for Ontario-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Chiang Mai flights.
Search Deals
From Ontario to Chiang Mai
Search Deals
One-way flight from Ontario to Chiang Mai
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($91 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated octubre 29, 2025.
Use the filters below to find and compare flights from Ontario to Chiang Mai that are best for you.

Fly from

Ontario

Fly to

Chiang Mai

Route

Depart

Return

Price

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

lun. 3/9

6:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

mié. 3/11

12:15 am-10:38 pm

2 stops36h 23m

$709

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

lun. 3/9

11:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

jue. 3/12

11:25 am-5:50 pm

1 stop20h 25m

$775

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

jue. 1/8

10:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

mar. 1/27

11:25 am-4:50 pm

1 stop20h 25m

$785

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 11/9

10:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

jue. 12/25

11:25 am-4:50 pm

1 stop20h 25m

$794

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

vie. 1/9

10:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

mié. 1/28

11:25 am-4:50 pm

1 stop20h 25m

$795

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

lun. 11/10

6:45 am-10:55 pm

2 stops25h 10m

Chiang Mai

lun. 11/24

12:15 am-5:09 pm

2 stops31h 54m

$797

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 11/11

6:45 am-10:55 pm

2 stops25h 10m

Chiang Mai

mar. 11/25

12:15 am-10:55 pm

2 stops37h 40m

$797

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 11/11

6:45 am-10:55 pm

2 stops25h 10m

Chiang Mai

lun. 11/24

12:15 am-10:55 pm

2 stops37h 40m

$797

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 11/11

6:45 am-10:55 pm

2 stops25h 10m

Chiang Mai

mié. 11/26

12:15 am-6:18 pm

2 stops33h 03m

$797

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

vie. 1/9

10:50 pm-10:25 am

1 stop20h 35m

Chiang Mai

jue. 1/29

11:25 am-4:50 pm

1 stop20h 25m

$810

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 21 results
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Compare providers for flights from Ontario to Chiang Mai

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Chiang Mai in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Chiang Mai flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Chiang Mai flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Chiang Mai flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Chiang Mai flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Chiang Mai?

Currently, September is the cheapest month in which you can book a flight from Ontario to Chiang Mai (average of $671). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $890). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated octubre 29, 2025.
Get a feel of what it's like to fly with China Airlines from Ontario to Chiang Mai by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
776 reviews

Boarding

8.3

Overall

8.3

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very good
776 reviews
China Airlines
8.3
Very good
776 reviews

Boarding

8.3

Overall

8.3

Entertainment

8.0

Crew

8.5

Comfort

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Chiang Mai?

    Delta and China Airlines can get you from Ontario to Chiang Mai in just under 20h 35m. Your travel time can differ by up to 6h 20m. Ontario and Chiang Mai are separated by a distance of 8060 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Ontario to Chiang Mai round-trip?

    China Airlines, at $796, was found to be the cheapest airline from Ontario to Chiang Mai..

  • Can I find deals for flights from Ontario to Chiang Mai that include hotel bookings?

    Yes. In addition to deals on Ontario to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Chiang Mai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Chiang Mai.

  • Can I find deals for business class flights from Ontario to Chiang Mai?

    Yes. Cheapflights offers flight deals from Ontario to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, September is the cheapest month in which you can book a flight from Ontario to Chiang Mai (average of $671). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $890). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Ontario to Chiang Mai

Discover the top airline that operate flights from Ontario to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$796Average$923FlexibilityNo cancel feeOn-time70%

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