$406 Find Cheap Flights from Ontario to Thailand

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Thailand departing on 8/22. 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

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Best Thailand Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok2 stops$717
Phuket City
Phuket City2 stops$880
Chiang Mai
Chiang Mai2 stops$784
Krabi
Krabi2 stops$890
Bangkok
Bangkok2 stops$717
Phuket City
Phuket City2 stops$880
Chiang Mai
Chiang Mai2 stops$784
Krabi
Krabi2 stops$890

Cheap Flights from Ontario to Thailand

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Thailand 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 round-trip flight deals from Ontario to Thailand

Sun, Aug 17 - Mon, Sep 1
Korean Air Logo
6:00 am - 11:25 pmONT-BKK
27h 25m2 stops
Korean Air Logo
2:35 am - 5:11 pmBKK-ONT
28h 36m2 stops
$717Korean Air
Find Deal
Sun, Aug 17 - Tue, Sep 2
Korean Air Logo
6:00 am - 9:45 pmONT-BKK
25h 45m2 stops
Korean Air Logo
11:30 pm - 5:11 pmBKK-ONT
31h 41m2 stops
$718Korean Air
Find Deal
Mon, Jul 21 - Mon, Sep 8
Delta Logo
6:00 am - 1:05 amONT-BKK
29h 05m2 stops
Delta Logo
9:50 am - 10:40 pmBKK-ONT
26h 50m2 stops
$779Delta
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Sun, Nov 2 - Mon, Nov 10
Delta Logo
5:45 am - 11:45 pmONT-BKK
27h 00m2 stops
Delta Logo
1:00 am - 5:17 pmBKK-ONT
31h 17m2 stops
$781Delta
Find Deal
Sat, Aug 9 - Thu, Aug 14
STARLUX Airlines Logo
11:45 pm - 4:40 pmONT-BKK
26h 55m1 stop
STARLUX Airlines Logo
5:50 pm - 5:40 pmBKK-ONT
37h 50m1 stop
$810STARLUX Airlines
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Sat, Aug 16 - Sun, Aug 24
STARLUX Airlines Logo
11:45 pm - 12:00 pmONT-BKK
22h 15m1 stop
STARLUX Airlines Logo
5:50 pm - 5:40 pmBKK-ONT
37h 50m1 stop
$811STARLUX Airlines
Find Deal
Sat, Aug 16 - Tue, Sep 2
China Airlines Logo
12:45 am - 12:10 pmONT-BKK
21h 25m1 stop
China Airlines Logo
1:20 pm - 6:40 pmBKK-ONT
19h 20m1 stop
$817China Airlines
Find Deal
Fri, Aug 29 - Sun, Sep 14
China Airlines Logo
12:45 am - 9:45 amONT-BKK
19h 00m1 stop
China Airlines Logo
1:20 pm - 6:40 pmBKK-ONT
19h 20m1 stop
$823China Airlines
Find Deal
Fri, Nov 14 - Sat, Nov 29
 Logo
9:45 pm - 8:00 pmONT-KBV
31h 15m2 stops
 Logo
8:35 am - 3:50 pmKBV-ONT
22h 15m2 stops
Thu, Nov 13 - Tue, Nov 18
 Logo
6:43 am - 9:40 pmONT-HKT
23h 57m2 stops
 Logo
11:20 pm - 5:17 pmHKT-ONT
32h 57m2 stops
Useful Info

KAYAK's insights & trends for Ontario to Thailand flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Thailand, 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 Ontario to Thailand is September, when tickets cost $868 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,476 and $1,371 respectively.

What’s the cheapest day of the week to fly from Ontario to Thailand?

The average price of all round-trip flights from Ontario to Thailand clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Thailand on a Wednesday and more expensive on a Friday. On your return trip to Ontario, you should consider flying back on a Thursday, and avoid Fridays for better deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Thailand, 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 the flight from Ontario to Thailand, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.


Good to know

Low seasonAugust
High seasonNovember
Cheapest flight$406
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Ontario to Bangkok Suvarnabhumi Airport

FAQs - booking Thailand flights

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

    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 Ontario to Thailand.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Thailand 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 Ontario to Thailand?

    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 Ontario to Thailand up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Thailand?

    The cheapest time of day to fly to Thailand is generally in the morning, when round-trip flights cost $911 on average. Morning departures are around 29% cheaper than evening flights, on average. The most expensive time of day to fly to Thailand is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,279.

Reviews of the top 4 airlines serving from Ontario to Thailand

 
Need help choosing which airline to fly with from Ontario to Thailand? 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.
9.0
STARLUX AirlinesOverall score based on 188 reviews
9.0Boarding
8.9Food
9.0Entertainment
9.3Crew
9.0Comfort
Airline reviews

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

2.0 MediocreAnonymous, Jun 2025SFO - TPE
Read more STARLUX Airlines reviews

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

Greetings when you arrive on the plane and good bye when you leave. Very attentive flight attendants.

Serve me a meal, I fell asleep during the flight. So they passed me twice.

Seats are not table comfortable. Crew members are pretty good. Can be much better!!

Very pleasant overall, although the movie selection could have been better.

I usually have ear problems when planes land. But the landing was so smooth I didn’t even notice it landing! The service was excellent!

the aircraft was fine and new. The crews can have better training. Their operations are not as smooth as EVA's. They are VERY stingy with drinking water. Throughout the entire flight, no one offered me any water and snacks. I still prefer EVA after trying out Starlux initially with lots of excitement and expectations.

Everything was smooth and professional. They could improve the raw vegan meal with fresher offerings, but otherwise they are now my favorite way to fly to Asia.

Leg space is small. Need more room for long flight.

Leg space is too small. Need to increase space for long flight.

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Best service I’ve ever had Flight attendants are nicely dressed and look very professional

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

Better organization of boarding procedures. Terrible leadership guiding people to gates.

They need to improve on how the plane lands cause it was not smooth at all.

I did not like how the plane landed. It was not smooth.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

Everything you need to know for your flight from Ontario to Thailand

Information on your arrival and departure airports

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