$363 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 3/26. 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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Cheap Flights from Ontario to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop$724
Phuket City
Phuket City2 stops$810
Chiang Mai
Chiang Mai2 stops$695
Krabi
Krabi2 stops$1,039
Bangkok
Bangkok1 stop$724
Phuket City
Phuket City2 stops$810
Chiang Mai
Chiang Mai2 stops$695
Krabi
Krabi2 stops$1,039

Book Cheap Ontario to Thailand Plane Tickets

 
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

Mon, Mar 16 - Wed, Mar 18
Korean Air Logo
6:00 am - 10:55 pmONT-CNX
26h 55m2 stops
Korean Air Logo
12:15 am - 10:34 pmCNX-ONT
36h 19m2 stops
$695Korean Air
Find Deal
Mon, Mar 16 - Wed, Mar 18
Delta Logo
6:00 am - 10:55 pmONT-CNX
26h 55m2 stops
Delta Logo
12:15 am - 10:34 pmCNX-ONT
36h 19m2 stops
$710Delta
Find Deal
Sat, Jan 10 - Sat, Jan 24
China Airlines Logo
10:50 pm - 1:35 amONT-BKK
35h 45m1 stop
China Airlines Logo
2:05 pm - 4:50 pmBKK-ONT
17h 45m1 stop
$724China Airlines
Find Deal
Tue, Mar 10 - Wed, Apr 1
China Airlines Logo
11:50 pm - 4:45 pmONT-BKK
26h 55m1 stop
China Airlines Logo
2:40 am - 6:00 pmBKK-ONT
29h 20m1 stop
$728China Airlines
Find Deal
Tue, Jan 20 - Tue, Feb 24
China Airlines Logo
10:50 pm - 1:05 pmONT-BKK
23h 15m1 stop
China Airlines Logo
10:55 am - 4:50 pmBKK-ONT
20h 55m1 stop
$731China Airlines
Find Deal
Mon, Mar 30 - Sat, Apr 18
China Airlines Logo
12:10 am - 10:20 amONT-CNX
20h 10m1 stop
China Airlines Logo
11:20 am - 6:00 pmCNX-ONT
20h 40m1 stop
$732China Airlines
Find Deal
Tue, Mar 24 - Sat, May 30
United Airlines Logo
1:50 pm - 12:20 amONT-BKK
44h 30m2 stops
United Airlines Logo
7:00 am - 8:17 pmBKK-ONT
27h 17m2 stops
$735United Airlines
Find Deal
Thu, Jan 15 - Wed, May 27
United Airlines Logo
1:53 pm - 11:25 amONT-BKK
54h 32m2 stops
United Airlines Logo
9:35 am - 11:06 pmBKK-ONT
27h 31m2 stops
$737United Airlines
Find Deal
Sun, Mar 29 - Sun, Apr 5
Multiple Airlines Logo
12:10 am - 5:35 pmONT-DMK
27h 25m2 stops
Multiple Airlines Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$989Multiple Airlines
Find Deal
Sat, Mar 28 - Mon, Apr 13
Multiple Airlines Logo
12:10 am - 5:35 pmONT-DMK
27h 25m2 stops
Multiple Airlines Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$1,020Multiple Airlines
Find Deal
Booking Insights

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 October, when tickets cost $808 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,456 and $1,337 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 2 weeks before departure, which saves you about 8% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$363
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Ontario to Chiang Mai

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 3 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.
8.9
STARLUX AirlinesOverall score based on 239 reviews
9.0Boarding
8.7Food
9.2Crew
8.9Entertainment
8.9Comfort
Airline reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

10.0 ExcellentBrian, Oct 2025SIN - TPE
Read more STARLUX Airlines reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

Flight cancelled due to inclement weather yet rival airline EVA Air with the same route departed 2 hours later and landed safely while our flight was cancelled and rescheduled for 36 hours later.

The staff in air and on land went above and beyond! I would definately recommend and we will fly Starlux again!

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

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.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

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.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

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.

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

Information on your arrival and departure airports