฿18,646 Find Cheap Flights to Ontario – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Thailand to Ontario departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Best Ontario Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto1 stop฿30,595
Ottawa
Ottawa2 stops฿39,144
Toronto
Toronto1 stop฿30,595
Ottawa
Ottawa2 stops฿39,144

Book Cheap Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ontario

Sun 20 Sep - Mon 28 Sep
Korean Air Logo
02:35 - 09:55
BKK
-
YYZ
42h 20m
1 stop
Korean Air Logo
12:30 - 01:05
YYZ
-
BKK
25h 35m
1 stop
฿30,595Korean Air
Tue 22 Sep - Tue 29 Sep
Korean Air Logo
21:40 - 09:55
BKK
-
YYZ
23h 15m
1 stop
Korean Air Logo
12:30 - 01:05
YYZ
-
BKK
25h 35m
1 stop
฿31,099Korean Air
Fri 11 Sep - Fri 25 Sep
แอร์แคนาดา Logo
07:05 - 16:59
BKK
-
YUL
20h 54m
1 stop
แอร์แคนาดา Logo
13:30 - 05:05
YUL
-
BKK
52h 35m
2 stops
฿32,547แอร์แคนาดา
Mon 5 Oct - Fri 26 Feb
Korean Air Logo
21:40 - 09:55
BKK
-
YYZ
23h 15m
1 stop
Korean Air Logo
11:40 - 13:25
YYZ
-
BKK
37h 45m
1 stop
฿32,648Korean Air
Mon 5 Oct - Sun 21 Feb
Korean Air Logo
02:35 - 09:55
BKK
-
YYZ
42h 20m
1 stop
Korean Air Logo
11:40 - 23:20
YYZ
-
BKK
23h 40m
1 stop
฿32,749Korean Air
Wed 9 Sep - Tue 15 Sep
แอร์แคนาดา Logo
07:05 - 17:45
BKK
-
YYZ
21h 40m
1 stop
แอร์แคนาดา Logo
22:25 - 05:05
YYZ
-
BKK
43h 40m
1 stop
฿33,018แอร์แคนาดา
Fri 9 Oct - Sat 20 Feb
Philippine Airlines Logo
13:25 - 22:45
BKK
-
YYZ
20h 20m
1 stop
Philippine Airlines Logo
00:50 - 12:05
YYZ
-
BKK
23h 15m
1 stop
฿33,792Philippine Airlines
Sun 13 Sep - Sat 26 Sep
เอทิฮัดแอร์เวย์ Logo
15:55 - 08:55
BKK
-
YYZ
28h 00m
1 stop
เอทิฮัดแอร์เวย์ Logo
13:40 - 06:45
YYZ
-
BKK
30h 05m
1 stop
฿34,162เอทิฮัดแอร์เวย์
Thu 10 Sep - Sat 26 Sep
Multiple Airlines Logo
01:55 - 21:50
BKK
-
YUL
30h 55m
3 stops
Multiple Airlines Logo
08:20 - 23:55
YUL
-
BKK
28h 35m
2 stops
฿36,451Multiple Airlines
Thu 10 Sep - Sat 26 Sep
Multiple Airlines Logo
01:55 - 20:21
BKK
-
YUL
29h 26m
3 stops
Multiple Airlines Logo
06:00 - 23:55
YUL
-
BKK
30h 55m
3 stops
฿36,586Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Thailand to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Thailand to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Thailand to Ontario is November, when tickets cost ฿17,435 (return) on average. On the other hand, the most expensive months are April and March, when the average cost of round-trip tickets is ฿33,590 and ฿27,835 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Thailand to Ontario, you should book around 5 weeks before departure, which saves you about 18% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low season

January

Cheapest flight

฿18,646
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly and prices are also 18% lower on average.
Flight from Phuket City to Montreal

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Thailand to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Thailand to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Thailand to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Thailand to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Thailand to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Thailand to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Thailand to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Thailand to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top 4 airlines flying to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Thailand to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Thailand to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1221 reviews
8.1Food
8.7Crew
8.2Entertainment
8.5Boarding
8.3Comfort
Airline reviews

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

8.0 ExcellentGary, Apr 2026
ICN - YYZ
Read more Korean Air reviews

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

This was an amazing flight. The crew was great. The service was great. The food provided was great.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

It would be better if flight crew can clearly communicate in english. But they are kind and accommodating. Food is good, especially the sandwiches on the self-serving snack trays. They are better than the ones served. Boarding was organized.

Not accommodating ground staff On board slow service Crew members not very friendly

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

Flight arrived early, fantastic, since it is short flight, no food being served

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

The flight attendants were very helpful, efficient and courteous in helping everyone!

The experience was very good. A little disappointed for the delays and the screen. The touch screen was annoying for being so irresponsive. Not a lot of good movie choices for me. The service is great. Food could have more choices though.

In economy, very cramped. Once the front seat was reclined it was almost impossible to get in and out of our seat. The personnel was excellent.

great experience. better than all other airlines flying this route.

Flight from Hong Kong to LAX was late, the plane was grubby, overcrowded and hot. I recently flew Starlux and that was a MUCH better experience.

The crew, pilots and flight attendants were all amazing. What could be better is reinforcing that seats cannot be reclined at departure and landing. I had a person seated in front of me who had her seat all the way inclined, including during take-off - after the crew asked her to seat upright. Cathay Pacific should reinforce this safety request and perhaps penalize those who don't follow it. I felt very unsafe with this person limiting my space and perhaps putting my life in danger in the "unlikely" case of an emergency.

The staff were so friendly and accommodating. The food was great. Lots of movies to choose from as well as tv shows. Highly recommend.

Better. I took an aisle seat this time. Although the overheard compartment above the seat ahead of me kept opening up during flight.

I have a Peanut Allergy and the Steward staff were very accommodating in ensuring my safety as my allergy is life threatening. Very professional and so vested in their profession.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

No charger and no entertainment on the way back. The plane's super old-like 80s old-with zero TVs. At least the free Wi-Fi works, so definitely bring your iPad. Also, no meal on this 7-hour flight.

The upgraded seats on the smaller flights I guess is a toss up if you get a full meal. We paid less for the ticket on the way there and got a full meal where we got a snack and drink on the way home. The lounge was also in the other terminal too. No entertainment on the seat and no wifi on the plane.

Terrible!!! We did not get the seats we bought!!! Therefore the trip was not comfortable and we will not buy airline tickets through Kayak ever again!

I didn't like that my wife and I had different experiences in the check-in process. We did not book our flights together. My wife had a default seat selection as a window seat whereas my seat defaulted to a middle row, middle seat selection. Why wouldn't I have the option to have a free seat at a window? Is it because my algorithm knows that I'll end up paying for the upgrade?

Unfortunately, my experience was disappointing. The crew were not friendly or welcoming, which made the flight less pleasant. Our flight was delayed, and we almost missed our connecting flight because of it. To make matters worse, the gate number shown on the digital ticket was incorrect, causing unnecessary confusion and stress before departure. Overall, the lack of accurate information and poor customer service made this a frustrating travel experience.

I have flown this route before, so far they have been unable to depart on time, then my connecting flight was canceled, likely due to this vs fake mechanical issues

My entertainment system was not working for the entire trip. I notified the flight attendant but nothing was changed. I did not get chance to have any movie for entertainment for the entire 13 hrs trip.

Cancelled flight, had to rearrange plans independently and no vouchers offered

My experience was good. On my return my screen had a glitch but the movie, show and internet options were good. Seats were comfortable, as comfortable as a plane could get in economy. Friendly service. Only complaint would be high price.

Not the greatest. Our initial flight to Tokyo got cancelled due to mechanical issues, which was unfortunate however they worked quickly to get us on another flight and refunded my seat ticket. We flew with Air Canada back home and it was not a good flight. The crew never gave us our second meal and I was awake the whole flight so I know they did not come by. The flight itself was rocky and seats were uncomfortable. In general, for an international flight, I do not think it is fair that we have to pay extra to pick our own seats. I’ve been on many international flights and always had the option to pick my seat during the booking or at online check-in. Furthermore, if the airline is going to automatically pick your seat, it should seat groups together instead of seating them apart. If I already pay thousands of dollars for a flight, I should have this option included.

Everything you need to know for your flight to Ontario

Cabin class types available on flights to Ontario

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.