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Cheap Flights from Ontario International to Chiang Mai

Compare Ontario International to Chiang Mai flight deals

Find the cheapest month or even day of the year to fly to Chiang Mai

Book the best Chiang Mai fare with no extra fees

Flight deals from Ontario International to Chiang Mai

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Chiang Mai Airport? If you want to travel next month, return fares start from R 16,285. Find the lowest prices on one-way and return tickets right here.
Chiang Mai.R 6,873 per passenger.Departing Mon, 26 Oct.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Mon, 26 Oct, arriving in Chiang Mai.Price includes taxes and charges.From R 6,873, select.
Chiang Mai.R 6,887 per passenger.Departing Thu, 21 Jan.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Thu, 21 Jan, arriving in Chiang Mai.Price includes taxes and charges.From R 6,887, select.
Chiang Mai.R 6,888 per passenger.Departing Tue, 10 Nov.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Tue, 10 Nov, arriving in Chiang Mai.Price includes taxes and charges.From R 6,888, select.
Chiang Mai.R 7,025 per passenger.Departing Fri, 19 Mar.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Fri, 19 Mar, arriving in Chiang Mai.Price includes taxes and charges.From R 7,025, select.
Chiang Mai.R 7,028 per passenger.Departing Thu, 18 Feb.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Thu, 18 Feb, arriving in Chiang Mai.Price includes taxes and charges.From R 7,028, select.
Chiang Mai.R 7,041 per passenger.Departing Sun, 6 Dec.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Sun, 6 Dec, arriving in Chiang Mai.Price includes taxes and charges.From R 7,041, select.
Chiang Mai.R 7,952 per passenger.Departing Thu, 13 Aug.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Thu, 13 Aug, arriving in Chiang Mai.Price includes taxes and charges.From R 7,952, select.
Chiang Mai.R 8,001 per passenger.Departing Sat, 5 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 5 Sep, arriving in Chiang Mai.Price includes taxes and charges.From R 8,001, select.
Chiang Mai.R 9,729 per passenger.Departing Mon, 13 Jul.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Mon, 13 Jul, arriving in Chiang Mai.Price includes taxes and charges.From R 9,729, select.
Chiang Mai.R 11,707 per passenger.Departing Wed, 7 Apr.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Wed, 7 Apr, arriving in Chiang Mai.Price includes taxes and charges.From R 11,707, select.
Chiang Mai.R 17,475 per passenger.Departing Thu, 27 May.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Ontario International on Thu, 27 May, arriving in Chiang Mai.Price includes taxes and charges.From R 17,475, select.

Find the cheapest month to fly from Ontario International to Chiang Mai

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Chiang Mai flights are currently cheapest in October.
Jul
from R 9,729
Aug
from R 7,952
Sep
from R 8,001
Oct
from R 6,873
Nov
from R 6,888
Dec
from R 7,041
Jan
from R 6,887
Feb
from R 7,028
Mar
from R 7,025
Apr
from R 11,707
May
from R 17,475
Jun
Find prices

Ontario International to Chiang Mai: Alternative routes

Compare routes from Ontario International to Chiang Mai below. You may find an airport to fly into that's cheaper, faster, or easier than Chiang Mai.

Chiang Mai

4km from central Chiang Mai
ClosestCheapest
from R 6,873
Search flights

Lampang

79km from central Chiang Mai
from R 8,193
Search flights

Ontario to Chiang Mai: Flight information

The things to know before you go.
Cheapest flight foundR 6,873
Cheapest month to flyOctober

Finding cheap flights from Ontario International to Chiang Mai: Frequently asked questions

The best price we found for a return flight from Ontario International to Chiang Mai is R 13,484. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Chiang Mai. But we found flights with one or more stops from R 13,484.
As of July 2026, there are no flights flying from Ontario International to Chiang Mai.
The cheapest month to fly from Ontario International to Chiang Mai is usually November.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Chiang Mai Airport on Wednesday, 18 November 2026.
No airlines currently offer direct flights between Ontario International Airport and Chiang Mai Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chiang Mai but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chiang Mai is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Korean Air offers the cheapest flight tickets to Chiang Mai.

Travelling from Ontario International Airport (ONT) to Chiang Mai Airport (CNX): what you need to know

  • The timezone in Chiang Mai is UTC+7, which is 15 hours ahead of Ontario.

  • To ensure you catch your ONT to CNX flight, allow plenty of time to navigate the airport and find your gate. Turning up two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Travelling during a peak month like July? Major public holidays and other popular seasons can result in longer queues and delays at security. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

  • Opt for a stopover if you want to break up your flight. Simply deselect 'Direct flights only' to look at your options for tickets from Ontario International Airport to Chiang Mai Airport. Taipei Taiwan Taoyuan Airport is a top stopover on the ONT to CNX route.

How to find the cheapest flights from Ontario International Airport (ONT) to Chiang Mai Airport (CNX)

  • Right now, R 6,873 is the lowest price we've found for a one-way Ontario International Airport to Chiang Mai Airport flight. The best price for a return plane ticket is R 13,484. Remember that fares can change due to availability at the time of booking.

  • Don't wait until the last moment. You're more likely to get cheap tickets from ONT to CNX if you book early. Airlines often offer some excellent early bird rates.

  • Getting cheap flights from Ontario International Airport to Chiang Mai Airport is easy if you're flexible with your trip dates. Use the 'Whole month' tool to see the best prices across each month and land a great deal.

  • There's no need to check back in every day to see if fares have dropped when you create a Price Alert. We'll update you the moment the price changes on cheap flights from ONT to CNX.

  • Lock in the ideal flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Ontario International Airport to Chiang Mai Airport, use the 'Sort by' tool. You can also filter results by arrival and departure times, airline, and journey duration.

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport maintains a strong on-time record, reducing your chances of a delayed flight. Departures from ONT arrive at their destination as scheduled 83% of the time.

  • Central Ontario to Ontario International Airport is approximately 10 kilometres. Depending on traffic, it'll take about 15 minutes to get there if you're ride-sharing, catching a taxi or driving.

  • The trip on public transport takes roughly 45 minutes.

  • Booked an early flight from Ontario International Airport to Chiang Mai Airport? Avoid the last-minute rush to the terminal (and sneak in some extra snooze time) by choosing one of these hotels near ONT:

Arriving at Chiang Mai Airport (CNX)

  • Book a hotel close to CNX if you're taking a late Ontario International Airport to Chiang Mai Airport flight. Settle into one of these accommodation options and skip the long transfer after landing:

  • Begin your adventure by picking up a Chiang Mai Airport rental car. Grab a set of wheels from Chic Car Rent, asap car rental or Hertz and explore beyond Chiang Mai's main sights.

  • Booking your vehicle from Chiang Mai Airport around two weeks in advance boosts your odds of scoring a great price.

Getting from Chiang Mai Airport (CNX) to central Chiang Mai

  • From Chiang Mai Airport, Chiang Mai is approximately 3 kilometres away. It takes around 15 minutes to reach the centre driving.

  • It takes around 25 minutes if you're using public transport.

When to fly to Chiang Mai Airport (CNX)

  • The quietest month for a flight from Ontario International Airport to Chiang Mai Airport is June, while January is the busiest. Choose the ideal time to visit Chiang Mai based on whether you prefer a faster pace or a more relaxed vibe.

  • Lock in your flight from Ontario International Airport to Chiang Mai Airport for April if you'd like to go to Chiang Mai during its warmest month. Expect temperatures of between 22ºC (72ºF) and 42ºC (108ºF).

  • Search for cheap tickets from ONT to CNX in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 12ºC (54ºF) and 31ºC (88ºF) on average.

Explore more of Thailand

  • Udon Thani is just one of the many cities in Thailand waiting to be explored after you've seen Chiang Mai. Around 434 kilometres away to the east, check out popular attractions including Thai-Chinese Cultural Centre, Wat Pho Chai and Wat Burapa Wanaram.

  • If you're interested in discovering another well-known destination in Thailand, consider Lampang, roughly 80 kilometres south-east of Chiang Mai. Wat Chiang Rai, Wat Phra Kaew Don Tao Suchadaram and Wat Chai Mongkhon are among its highlights.

Plan the rest of your trip from Ontario to Chiang Mai

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.