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KAYAK's insights & trends for Bangkok to Ontario flights

Get data-powered insights and trends into flights from Bangkok 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 Bangkok to Ontario?

The cheapest month for flights from Bangkok to Ontario is November, when tickets cost ฿34,691 (return) on average. On the other hand, the most expensive months are April and August, when the average cost of return tickets is ฿51,868 and ฿47,413 respectively.

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

To get a below-average price on a flight from Bangkok to Ontario, you should book around 5 weeks before departure, which saves you about 28% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Bangkok 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 Bangkok to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Bangkok 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 Bangkok 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 Bangkok 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 Bangkok 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 Bangkok to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Bangkok to Ontario

 
Need help choosing which airline to fly with from Bangkok 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 1218 reviews
8.1Food
8.7Crew
8.3Comfort
8.5Boarding
8.2Entertainment
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
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.

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

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

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

So far one of the good one , whenever I go to Korea , I always use Korean airline .

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

Delayed 30 mins but to final destination so I didn't miss a connecting flight like I did on the initial journey that added over 12 hours to my trip.

Food was not great. Crew was lovely. There was no whisky on the first leg (BKK - ICN). And it took forever for my luggage to come out at LAX.

Excellent service in business class. Well worth the slightly higher fare as it includes lounge access, additional luggage weight and a full hot meal on board.

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.

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 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.

They downgraded me from premium economy to regular economy and me had 2 major lay over and had to have an emergency landing due to engine failure mid flight Don’t use them worst experience I have ever had still dealing with the trauma

Worst experience I have ever had with any airline in over 25 years.

very professional and very attentive to my Special Needs as I required a Wheel Chair and assistance to board

When comes to Taiwan airlines China airlines is the best rest are pure trash

Customer service was exceptional. I heard it wasn’t a great airline, my opinion has changed after flying with them

The meals were not the greatest and lacking of appetite but everything else was spot on

Overall, excellent: check-in, boarding, service, and food. The Business Class seating is a little less private and spacious than the world's premier airlines, but still very good for a long haul flight.

Your staff was exceptional. Could teach the other airlines-rules on etiquette, and service. Excellent landings on flights, carried out by your pilots. Only complaint is long delay on return flight in Beijing, onto Vancouver.

Nothing to complain of, the only reason I am not giving better marks is that I am used to flying with ANA and they are the top.

Food and service are good. Bathroom was lack of lotions and cleaning. That should be improved.

Food & service very good next I will pick up again

Everything was not satisfactory - the flight was delayed, staffs were ok but they didn't speak English well. I am from east Asia (not Chinese) and they didn't care enough to remember that I wasn't Chinese but persistently spoke chinese to me. The flight announcement in english wasn't clear to understand.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

Plane was ancient, poor seating, layover time for flight to Raleigh was insanely short and total disaster, plane arrived in Vancouver late, luggage did not arrive in Raleigh with Raleigh flight. I lost cell phone in customs because of rushing to catch next flight.

The seats can always be bigger and have more leg room.

The flight to PHL was cancelled. They couldn't find luggage. Long lines, staff was disorganized, didn't care. Luggage still not found.

Everything good except food! Much less appealing compared to trip from Canada to Asia…rolls and sandwich still semi-frozen, etc

In flight entertainment was good. Food tasted terrible. Service was adequate but largely unhelpful. For example, we had a short layover after the flight. When I inquired about the possibility of exiting more quickly (we were in the back), we were informed that this was not possible. On our next flight, the captain made an announcement requesting that people who did not have connecting flights to allow those who did to exit first. If given a choice in the future, I would not fly Air Canada.

Do something about that crying baby the whole flight. lol

Appointment wasn’t so bad I think we really made us uncomfortable was that we had a lot of late flights going and coming back but overall the service was great

Air.Canada assisted passengers with hotels, cabs, and accommodations when the flight was delayed because of mechanical problems.

Everything is very good, No need to be changed. Thank you

Easy boarding, smooth flight, professional crew, and great meals. Still, 15 hours in a plane.

More options for your flight from Bangkok to Ontario

Complete your trip to Ontario with a hotel stay or car hire