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

China Airlines, at $939, was found to be the cheapest airline from Ontario to Chiang Mai.Alternate airlines to your destination round-trip include EVA Air 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 Korean Air, which is currently one of the cheapest options available, starting at $453. Delta flights start at $562 while deals on China Airlines start at $683 one-way.

What is the cheapest day to fly from Ontario to Chiang Mai?

Travelers seeking maximum savings on their Ontario to Chiang Mai flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Wednesday flights are found to be more expensive to fly from Ontario to Chiang Mai. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Chiang Mai.

How far in advance should I book a flight from Ontario to Chiang Mai?

Find a great deal and save up to 4% by booking at least 43 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Chiang Mai within the next two weeks, with the cheapest ticket starting at $785.

What is the cheapest month to fly from Ontario to Chiang Mai?

August can be a great time to fly to Chiang Mai from Ontario with a flight ticket averaging about $1,042. Cheapflights users have found deals in the month of August for as cheap as $738. The most expensive prices can be found in the month of December.

What is the cheapest time of day to fly from ONT to CNX?

When flying from Ontario to Chiang Mai, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Ontario-Chiang Mai flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Chiang Mai flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

$453+ Flights from Ontario to Chiang Mai

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from Ontario to Chiang Mai

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$939 (oojo)
One-way from	$453 (Trip.com)
Popular in	December
Cheapest in	August
Average price	$976

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 ($96 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

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 mayo 1, 2025.

mié. 11/127:00 amONT - CNX

2 stops25h 05mKorean Air

mar. 2/1012:15 amCNX - ONT

2 stops32h 00mKorean Air

Deal found 4/30

$782

sáb. 11/17:00 amONT - CNX

2 stops26h 05mMultiple Airlines

jue. 11/1312:15 amCNX - ONT

2 stops28h 03mMultiple Airlines

Deal found 4/29

$849

mié. 11/1210:45 pmONT - CNX

1 stop20h 40mChina Airlines

mié. 2/1111:25 amCNX - ONT

1 stop20h 25mChina Airlines

Deal found 4/29

$901

dom. 10/196:55 pmONT - CNX

2 stops25h 30mEVA Air

dom. 10/2611:50 amCNX - ONT

2 stops41h 22mEVA Air

Deal found 4/28

$1,181

mié. 11/126:00 amONT - CNX

3 stops40h 45mQatar Airways

mié. 2/1110:10 amCNX - ONT

3 stops42h 34mQatar Airways

Deal found 4/29

$1,622

Best flights from Ontario to Chiang Mai
Discover carefully curated flight deals from Ontario to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mayo 1, 2025.

dom. 9/2112:10 amONT - CNX

1 stop20h 10mChina Airlines

vie. 9/2611:20 amCNX - ONT

1 stop20h 40mChina Airlines

Deal found 4/29

$939

mar. 9/97:00 amONT - CNX

2 stops24h 55mMultiple Airlines

sáb. 9/2711:20 amCNX - ONT

1 stop20h 40mMultiple Airlines

Deal found 4/30

$1,019

dom. 10/196:55 pmONT - CNX

2 stops25h 30mEVA Air

dom. 10/2611:50 amCNX - ONT

2 stops41h 22mEVA Air

Deal found 4/28

$1,181

sáb. 5/316:00 amONT - CNX

2 stops25h 55mKorean Air

jue. 6/1211:15 pmCNX - ONT

2 stops31h 55mKorean Air

Deal found 4/30

$1,627

mar. 5/1311:46 amONT - CNX

3 stops41h 24mQatar Airways

mié. 7/168:00 pmCNX - ONT

3 stops36h 04mQatar Airways

Deal found 4/29

$1,934

Last-minute flights from Ontario to Chiang Mai
Discover last-minute flight deals from Ontario to Chiang Mai. Data last updated mayo 1, 2025 and is based on user searches.

lun. 5/1212:10 amONT - CNX

1 stop20h 10mChina Airlines

mié. 7/1611:20 amCNX - ONT

1 stop21h 20mChina Airlines

Deal found 4/29

$1,167

lun. 5/1212:10 amONT - CNX

2 stops24h 40mMultiple Airlines

mié. 7/1611:20 amCNX - ONT

1 stop21h 20mMultiple Airlines

Deal found 4/29

$1,352

mar. 5/1311:46 amONT - CNX

3 stops41h 24mQatar Airways

mié. 7/168:00 pmCNX - ONT

3 stops36h 04mQatar Airways

Deal found 4/29

$1,934

sáb. 5/316:00 amONT - CNX

2 stops25h 55mKorean Air

jue. 6/1211:15 pmCNX - ONT

2 stops31h 55mKorean Air

Deal found 4/30

$1,627

One-way flights from Ontario to Chiang Mai
Search for one-way flight options from Ontario to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated mayo 1, 2025.

mar. 5/65:45 amONT - CNX

2 stops26h 10mKorean Air

Deal found 4/30

$453

sáb. 6/77:05 pmONT - CNX

2 stops36h 50mDelta

Deal found 4/30

$562

lun. 5/512:10 amONT - CNX

1 stop20h 10mChina Airlines

Deal found 4/30

$683

vie. 7/1112:45 amONT - CNX

2 stops23h 00mMultiple Airlines

Deal found 4/29

$808

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 9/21

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

vie. 9/26

11:20 am-6:00 pm

1 stop20h 40m

$939

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 9/9

7:00 am-9:55 pm

2 stops24h 55m

Chiang Mai

sáb. 9/27

11:20 am-6:00 pm

1 stop20h 40m

$1,019

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 10/19

6:55 pm-10:25 am

2 stops25h 30m

Chiang Mai

dom. 10/26

11:50 am-3:12 pm

2 stops41h 22m

$1,181

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

sáb. 5/31

6:00 am-9:55 pm

2 stops25h 55m

Chiang Mai

jue. 6/12

11:15 pm-5:10 pm

2 stops31h 55m

$1,627

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 5/13

11:46 am-7:10 pm

3 stops41h 24m

Chiang Mai

mié. 7/16

8:00 pm-6:04 pm

3 stops36h 04m

$1,934

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

mar. 5/6

5:45 am-9:55 pm

2 stops26h 10m

$453

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

sáb. 6/7

7:05 pm-9:55 pm

2 stops36h 50m

$562

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

lun. 5/5

12:10 am-10:20 am

1 stop20h 10m

$683

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

vie. 7/11

12:45 am-1:45 pm

2 stops23h 00m

$808

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Compare providers for flights from Ontario to Chiang Mai

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 May.

Provider	Price Accuracy	Trust Score*
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Chiang Mai flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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, April is the cheapest month in which you can book a flight from Ontario to Chiang Mai (average of $1,011). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $1,678). 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

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

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

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

EVA Air

8.4

Very good

1,186 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Korean Air

8.4

Very good

1,068 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

China Airlines

8.3

Very good

732 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Delta

8.0

Very good

7,934 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Qatar Airways

7.4

Good

3,563 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

What are the cheapest airlines flying from Ontario to Chiang Mai round-trip?
China Airlines, at $939, was found to be the cheapest airline from Ontario to Chiang Mai.Alternate airlines to your destination round-trip include EVA Air 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 Korean Air, which is currently one of the cheapest options available, starting at $453. Delta flights start at $562 while deals on China Airlines start at $683 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 $1,011). Flying from Ontario to Chiang Mai in December is currently the most expensive (average of $1,678). 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Ontario to Chiang Mai

Airline	Cheapest	Average	Flexibility	On-time
China Airlines	Cheapest$796	Average$915	FlexibilityNo cancel fee	On-time70%

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$453+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Chiang Mai with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Chiang Mai

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Chiang Mai

Cheapest flights from Ontario to Chiang MaiExplore 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 mayo 1, 2025.

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 mayo 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Chiang Mai that are best for you.

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 May.

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.

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?

Rainfall in Chiang Mai by month

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

Temperature in Chiang Mai by month

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

Reviews of airlines servicing Chiang Mai

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?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Ontario to Chiang Mai

100% Free

Book with Flexibility

Travel Smart

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 mayo 1, 2025.