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Find cheap flights from Ontario to Thailand from $440

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 7/18. 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
0 bags
Fri 6/7
Fri 6/14

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Best Thailand Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Bangkok
Bangkok1 stop$809
Phuket City
Phuket City2 stops$1,003
Chiang Mai
Chiang Mai2 stops$987
Krabi
Krabi2 stops$1,286

Good to know

Low season

May

High season

November

Cheapest flight

$440
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 17% 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 to Thailand from Ontario 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 to Thailand with an airline and back to Ontario 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 to Thailand from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Thailand

  • Morning departure is around 4% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 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.
9.1
STARLUX AirlinesOverall score based on 103 reviews
9.3Crew
9.1Entertainment
9.0Food
9.1Boarding
9.1Comfort
Airline reviews

An excellent experience. The aircraft, crew, services, and amenities were all top notch for an economy class ticket. It has been quite a while since I've had this level of service on an airline.

10.0 ExcellentDavid, Apr 2024KUL - TPE
Read more about STARLUX Airlines reviews

An excellent experience. The aircraft, crew, services, and amenities were all top notch for an economy class ticket. It has been quite a while since I've had this level of service on an airline.

Everything about this airline I like! Will definitely choose Starlux over any other airlines out there when it is available!

My husband and I like this airlines , lt looks new ,clean & good service. Then we will fly with STARLUX again. And I love their time , it is perfect for my family. See you soon.

Great experience! Food, staff, Entertainment Center, leg room was great!

Very new plane with premium economy seats reclining to 45 degrees, more than most other competitors. Staff service was excellent and friendly.

The plane is very clean. The selection of movies is excellent!

Starlux has now won me over from all other airline for Asia. They are friendly and very serviced focus with us passengers.

Great ! The services of crew members were excellent. The pilot did landing smoothly.

First time on Starlux. I was impressed. Very eager to assist flight crew

Premium Economy on Starlux- a worthwhile way to cross the Pacific. This is a great premium economy experience. The seats are comfortable, wide and provide decent foot rests. The seatback TV is large, high resolution and plenty of content. Bluetooth connection for your headset and control from your phone is available. Food was decent and in line with the cabin class. The seat could be improved by providing more lower leg support especially for taller guests (6ft myself). Cabin crew will be moving up and down the aisle a lot since the galley is in front.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Eva Air's Business Class is pretty decent. With the given price, I think that the food can be better.

Pleasant, comfortable, and entertaining. All told, ZERO issues with it. And sadly, so far the flight was WAY more comfortable than the hellhole that is "Lambug Beach Resort" at Badian Beach!

It was a pleasant fly with Eva Air from NYC to Taipei. The crew were friendly and the food was exceeded my expectation.

Eva air is a good airline. The seats on the way to Taipei could have certainly been more comfortable, but all in all it was a pretty good experience.

Boarding is fast and easy for economy class, food was ok baggage policies are good

Overall the flight was what might be expected for a long haul flight to Asia in economy class. The cabin crew was attentive and the food was good. Boarding was fairly fast and easy. The one thing I found frustrating was the EVA app. It is terrible. Trying to do anything on it was almost impossible.

EVA would not help with ticket issue since they were purchased through a travel agency. Even though it was EVA ticket stock. Travel agency Budget Air didn't reissue ticket after airline change which I didn’t learn until trying to checkin on Christmas Day and there was no contact number for the agency to help. I will never use Budget Air to purchase flight again and disappointed in EVA’s refusal to help. Thankfully just under 12 hrs before departure someone from the agency was available to reissue tickets. I was starting to think we would not be flying and the stress trying to resolve was completely unacceptable.

seamless check in/ friendly staff, food is good, always love flying Eva Air

Very uncomfortable and crowded seats in economy. Flight attendant refused request to move to nearby unused seat with more legroom because “It was more money for that seat”. It was also near impossible to reach airline directly by phone. Waits upwards of an hour and not very helpful customer service representatives after long wait. Cannot recommend this airline.

Staff was excellent. Food could use more variety. -More vegetable options. Menu didn't have juice or soda listed. -The croissants were outstanding!

Asian Vegitarian food was test less No Salt or pepper served Need to improve with Chef who can caters for Peaple from India I am sure Chef knows different varieties of food Indian People like

Flight attendants rude, they disappear for almost 3 hours not doing rounds to see what people needed. The laboratories were full of empty water cups, because they never come back to collect them.

The flight attendant, where kind of rude, there where hiding for almost 3 hours, without doing rounds to see if people needed water or pickup the water cups, the toilets were full of water cups, because they never come back to pick them up.

Flew on an Airbus 350-900. Excellent aircraft properly cleaned and serviced. Flight crew was excellent plane departed and arrived on time. The A350 has excellent air circulation far better than the 777. I would recommend Asiana to anyone looking to fly in a clean comfortable environment. This is my second round trip flight from New York to Bangkok via Asiana and I will book Asiana again!

Amazing service and fabulous syaff. Loved the jumbo jet too, comfortable.

The entertainment screens are dated and needs to be changed to new screens. Then when we got home, I found out 2 of our luggage’s were damaged (huge) and some items stolen.

I could not choose my seat prior to check in

JetBlue's check-in was great, but there was an in-flight attendant who was very rude and unkind. I didn't realize that the bathrooms were already locked 30 mins prior to landing and needed to use the restroom. Instead of politely asking me to return, she rudely told me, 'NO, bathrooms are locked! Go back to your seat!' The JetBlue flight was more than an hour delay, which made me almost miss my connecting flight with Asiana. I understand the reasoning, but the action they took to get a hold of maintenance was time consuming. It took them more than 30 mins to get a hold of maintenance and for maintenance to get started. The Asiana flight and crew were wonderful, in general. They waited for us who were delayed from the previous flight before they took off and were very kind to take my checked baggage's info. Seats were a little uncomfortable for such long flight, but service and flight attendants were great! However, my 3 checked baggages are missing! They're lost somewhere in the transition. I'm writing this review 3 days after my arrival to the Philippines, and my 3 checked baggages, where my wedding dress is, are all still missing! I and the CEB airport crew have sent multiple emails to both JetBlue and Asiana, and neither has responded to any of our emails. Although, I was able to get in contact with JetBlue's Interline Department who confirmed that the bags were turned over to Asiana without confirmation details.

The full flat bed was not that comfortable, hard and lumpy., too much space wasted with those bulky walls and divisions instead of making the bed 3-4 inches wider. The compartment where you put your feet is like a shoebox, poor design. Toilets of A350 are just too small, sink is too small

It was a 2 hour flight to Taiwan. Lunch was served. China Airlines goes above and beyond for their passengers.

They were helpful, considerate with asking us for standby preboarding with our infant, gave us toys and excellent service onboard. They were always on time, even early boarding once! All our luggage arrived intact, and they even brought our baby car seat to oversized for us. We love China Airlines!

Great flight, although I flew out of ONT and that is where my car is, lol

Free Wi-Fi could have been better in the Airport.

3 of the 4 flights had delays despite the weather being fine, but still managed to make all connections

Ask flight attendant for water during flight and she was a little rude get the water.

Baggage made it successfully to destination despite short layover. Appreciate that.

Staff were good and nice. There should me 3 meals instead of only 2 and snacks.

Excellent staff made the boarding process fast and easy. Friendly crews on both flights from Saigon to Taipei and Taipei to Los Angeles. Will fly China Airlines again.

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

Book cheap flights from Ontario to Thailand

Recent round-trip flight deals

9/29Sun
1 stopChina Airlines
26h 10mONT-BKK
10/13Sun
1 stopChina Airlines
38h 35mBKK-ONT
$809
9/4Wed
1 stopChina Airlines
21h 25mONT-BKK
9/13Fri
1 stopChina Airlines
21h 40mBKK-ONT
$841
9/25Wed
2 stopsDelta
26h 35mONT-BKK
11/20Wed
2 stopsDelta
28h 46mBKK-ONT
$906
10/24Thu
2 stopsKorean Air
26h 35mONT-BKK
11/6Wed
2 stopsKorean Air
32h 03mBKK-ONT
$911
10/3Thu
2 stopsKorean Air
26h 35mONT-BKK
10/17Thu
2 stopsKorean Air
46h 13mBKK-ONT
$955
9/1Sun
2 stopsDelta
43h 35mONT-BKK
9/13Fri
2 stopsDelta
34h 23mBKK-ONT
$963
9/24Tue
2 stopsJapan Airlines
27h 00mONT-BKK
10/7Mon
2 stopsJapan Airlines
21h 16mBKK-ONT
$1,002
8/30Fri
2 stops
24h 45mONT-BKK
9/13Fri
2 stops
34h 23mBKK-ONT
$1,003
8/31Sat
2 stops
24h 55mONT-CNX
9/13Fri
2 stops
32h 48mCNX-ONT
$1,003
9/23Mon
2 stopsJapan Airlines
27h 00mONT-BKK
10/20Sun
2 stopsJapan Airlines
31h 16mBKK-ONT
$1,010

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Recent one-way flight deals

7/18Thu
2 stopsKorean Air
24h 00mONT-BKK
$440
7/23Tue
2 stopsKorean Air
24h 00mONT-BKK
$441
7/23Tue
2 stopsDelta
25h 50mONT-BKK
$443
7/22Mon
2 stopsDelta
38h 36mONT-BKK
$455
8/16Fri
1 stopChina Airlines
19h 00mONT-BKK
$523
8/14Wed
1 stopChina Airlines
19h 00mONT-BKK
$528
10/5Sat
2 stops
26h 35mONT-BKK
$558
5/15Wed
2 stops
41h 27mONT-BKK
$563
9/4Wed
2 stopsUnited Airlines
30h 55mONT-BKK
$588
8/19Mon
2 stopsUnited Airlines
43h 50mONT-BKK
$589

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Last minute flights from Ontario to Thailand

Last minute flight, train and bus deals

5/12Sun
multi-stopUnited Airlines
32h 35mONT-BKK
5/28Tue
multi-stopUnited Airlines
65h 10mBKK-ONT
$1,076
5/13Mon
multi-stop
43h 30mONT-BKK
6/12Wed
multi-stop
23h 39mBKK-ONT
$1,077
5/12Sun
multi-stopQatar Airways
45h 06mONT-BKK
6/11Tue
multi-stopQatar Airways
30h 44mBKK-ONT
$1,347
5/13Mon
multi-stopChina Airlines
19h 35mONT-BKK
6/13Thu
multi-stopChina Airlines
38h 35mBKK-ONT
$1,444
5/13Mon
multi-stopQatar Airways
34h 10mONT-BKK
5/27Mon
multi-stopQatar Airways
52h 13mBKK-ONT
$1,462
5/13Mon
multi-stopChina Airlines
19h 35mONT-BKK
6/10Mon
multi-stopChina Airlines
29h 25mBKK-ONT
$1,477
5/13Mon
multi-stopKorean Air
26h 45mONT-BKK
5/21Tue
multi-stopKorean Air
22h 12mBKK-ONT
$2,619
5/9Thu
multi-stopKorean Air
24h 55mONT-BKK
5/16Thu
multi-stopKorean Air
22h 12mBKK-ONT
$2,767
5/12Sun
multi-stopEtihad Airways
42h 10mONT-BKK
5/18Sat
multi-stopEtihad Airways
33h 34mBKK-ONT
$4,474
5/13Mon
multi-stopEtihad Airways
42h 10mONT-BKK
5/22Wed
multi-stopEtihad Airways
38h 44mBKK-ONT
$8,818

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Ontario - Thailand Flights

Departure:

Ontario (ONT)United States

Return flight deals:

Thailand - Ontario

Cabin classes: