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Chiang Mai

$434+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CNX
jul. 23 — jul. 301
mié. 7/23
mié. 7/30
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 julio 18, 2025.

Round-trip from

$780
(Delta)

One-way from

$434
(Delta)

Popular in

December

Cheapest in

September

Average price

$1,244
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 ($52 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 18, 2025.

This Delta deal was found by Cheapflights users on 7/17. 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.
mar. 8/196:05 amONT - CNX
2 stops25h 50mDelta
sáb. 9/611:15 pmCNX - ONT
2 stops37h 25mDelta
Deal found 7/17$780
This FlightHub deal was found by Cheapflights users on 7/17. 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. 8/1712:45 amONT - CNX
1 stop19h 35mChina Airlines
dom. 9/711:20 amCNX - ONT
1 stop21h 20mChina Airlines
Deal found 7/17$893
This Travelocity deal was found by Cheapflights users on 7/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/146:05 amONT - CNX
2 stops27h 35mMultiple Airlines
mié. 8/2012:45 amCNX - ONT
2 stops30h 26mMultiple Airlines
Deal found 7/15$931
This FlightHub deal was found by Cheapflights users on 7/17. 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. 11/126:43 amONT - CNX
2 stops25h 22mKorean Air
mar. 2/1012:15 amCNX - ONT
2 stops37h 23mKorean Air
Deal found 7/17$1,069
This oojo deal was found by Cheapflights users on 7/17. 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.
jue. 7/316:00 amONT - CNX
2 stops27h 40mAsiana Airlines
dom. 8/1012:45 amCNX - ONT
2 stops48h 20mAsiana Airlines
Deal found 7/17$1,094
This oojo deal was found by Cheapflights users on 7/17. 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.
jue. 7/316:58 pmONT - CNX
2 stops25h 27mEVA Air
dom. 8/1011:35 amCNX - ONT
2 stops37h 30mEVA Air
Deal found 7/17$1,347

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 julio 18, 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

mar. 8/19

6:05 am-9:55 pm

2 stops25h 50m

Chiang Mai

sáb. 9/6

11:15 pm-10:40 pm

2 stops37h 25m

$780

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

lun. 9/1

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

mar. 9/16

11:20 am-6:00 pm

1 stop20h 40m

$867

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

jue. 8/14

6:05 am-11:40 pm

2 stops27h 35m

Chiang Mai

mié. 8/20

12:45 am-5:11 pm

2 stops30h 26m

$931

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mié. 11/12

6:43 am-11:05 pm

2 stops25h 22m

Chiang Mai

mar. 2/10

12:15 am-10:38 pm

2 stops37h 23m

$1,069

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

jue. 7/31

6:00 am-11:40 pm

2 stops27h 40m

Chiang Mai

dom. 8/10

12:45 am-11:05 am

2 stops48h 20m

$1,094

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 8/19

6:05 am-9:55 pm

2 stops25h 50m

$434

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 8/17

6:05 am-9:55 pm

2 stops25h 50m

$482

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mié. 8/6

6:25 am-11:40 pm

2 stops27h 15m

$487

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 8/17

12:45 am-10:20 am

1 stop19h 35m

$516

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

jue. 8/14

6:58 pm-10:25 am

2 stops25h 27m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

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 $1,009). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $1,635). 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 julio 18, 2025.
Get a feel of what it's like to fly with EVA Air, Korean Air, and 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.
EVA Air
8.4
Very good
1,214 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

8.1

Comfort

8.3

Crew

8.6

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
1,214 reviews
EVA Air
8.4
Very good
1,214 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

8.1

Comfort

8.3

Crew

8.6

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
1,109 reviews
EVA Air
8.4
Very good
1,214 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

8.1

Comfort

8.3

Crew

8.6

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
8.2
Very good
745 reviews
EVA Air
8.4
Very good
1,214 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

8.1

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Asiana Airlines
8.2
Very good
456 reviews
EVA Air
8.4
Very good
1,214 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

8.1

Comfort

8.3

Crew

8.6

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
7,958 reviews
EVA Air
8.4
Very good
1,214 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

8.1

Comfort

8.3

Crew

8.6

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?

    Delta, at $780, was found to be the cheapest airline from Ontario to Chiang Mai.Alternate airlines to your destination round-trip include China Airlines and Korean Air.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $434. Korean Air flights start at $482 while deals on China Airlines start at $516 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 $1,009). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $1,635). 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.

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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 julio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$796Average$886FlexibilityNo cancel feeOn-time70%

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