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Chiang Mai

$513+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CNX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$841
(Korean Air)

One-way from

$513
(Korean Air)

Popular in

December

Cheapest in

August

Average price

$1,429
From Ontario to Chiang Mai
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One-way flight from Ontario to Chiang Mai
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Highest demand for flights based on searches. 9% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Korean Air deal was found by Cheapflights users on 6/12. 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.
Wed 11/126:43 amONT - CNX
2 stops25h 22mKorean Air
Tue 2/1012:15 amCNX - ONT
2 stops30h 05mKorean Air
Deal found 6/12$841
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:45 amONT - CNX
2 stops25h 10mDelta
Wed 9/2411:15 pmCNX - ONT
2 stops37h 27mDelta
Deal found 6/10$850
This oojo deal was found by Cheapflights users on 6/10. 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.
Wed 10/2212:10 amONT - CNX
1 stop20h 10mChina Airlines
Tue 12/2311:25 amCNX - ONT
1 stop20h 25mChina Airlines
Deal found 6/10$851
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Wed 11/129:45 pmONT - CNX
2 stops30h 10mMultiple Airlines
Wed 2/1110:10 amCNX - ONT
2 stops20h 40mMultiple Airlines
Deal found 6/11$949
This Qatar Airways deal was found by Cheapflights users on 6/9. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amONT - CNX
3 stops38h 20mQatar Airways
Tue 11/257:45 pmCNX - ONT
3 stops41h 52mQatar Airways
Deal found 6/9$1,592
This oojo deal was found by Cheapflights users on 6/11. 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.
Thu 6/126:58 pmONT - CNX
2 stops25h 27mEVA Air
Thu 6/1911:35 amCNX - ONT
2 stops26h 38mEVA Air
Deal found 6/11$1,645

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 June 12, 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

Sun 8/3

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Tue 9/23

11:20 am-6:00 pm

1 stop20h 40m

$872

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sun 8/3

6:25 am-9:55 pm

2 stops25h 30m

Chiang Mai

Wed 9/24

11:15 pm-10:42 pm

2 stops37h 27m

$914

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sun 8/3

6:25 am-9:55 pm

2 stops25h 30m

Chiang Mai

Mon 9/22

11:15 pm-11:46 pm

2 stops38h 31m

$915

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Thu 7/10

12:45 am-7:25 am

2 stops40h 40m

Chiang Mai

Fri 7/18

8:00 am-6:40 pm

2 stops24h 40m

$1,084

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 6/21

6:00 am-11:15 am

3 stops39h 15m

Chiang Mai

Sun 7/13

10:10 am-12:13 am

3 stops52h 03m

$1,871

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sun 8/10

6:25 am-9:55 pm

2 stops25h 30m

$513

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 7/9

12:45 am-10:20 am

1 stop19h 35m

$579

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 7/21

1:15 pm-9:55 pm

2 stops42h 40m

$584

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 8/9

12:45 am-5:15 pm

2 stops26h 30m

$589

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 8/6

6:58 pm-10:25 am

2 stops25h 27m

$693

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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, April is the cheapest month in which you can book a flight from Ontario to Chiang Mai (average of $1,012). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $1,655). 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.

Rainfall in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chiang Mai ranges from 0.0 - 9.8 inches per month. September is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Chiang Mai when rainfall is around 0.0 in.

Temperature in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chiang Mai, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Ontario to Chiang Mai, such as EVA Air, Korean Air and China Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Delta
8.0
Very good
7,950 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Qatar Airways
7.4
Good
3,584 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

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.

  • What are the cheapest airlines flying from Ontario to Chiang Mai round-trip?

    Korean Air, at $841, was found to be the cheapest airline from Ontario to Chiang Mai.Alternate airlines to your destination round-trip include Delta and China Airlines.

  • What are the cheapest airlines to fly from Ontario to Chiang Mai one-way?

    To fly one-way, consider booking your trip with Korean Air, which is currently one of the cheapest options available, starting at $513. China Airlines flights start at $579 while deals on Delta start at $584 one-way.

  • 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, April is the cheapest month in which you can book a flight from Ontario to Chiang Mai (average of $1,012). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $1,655). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$796Average$929FlexibilityNo cancel feeOn-time70%

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