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Ontario

$357+ Cheap flights from Thailand to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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Cheap flight deals from Thailand to Ontario

Cheapest flights from Thailand to Ontario
Explore the most affordable flight options available from Thailand to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 4, 2025.

This China Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/2510:55 amBKK - ONT
1 stop20h 55mChina Airlines
jue. 1/810:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 12/3$844
This Trip.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/162:05 pmBKK - ONT
1 stop17h 45mChina Airlines
dom. 1/410:50 pmONT - BKK
1 stop35h 45mChina Airlines
Deal found 12/2$907
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/164:55 pmBKK - ONT
2 stops20h 54mUnited Airlines
jue. 1/16:39 pmONT - BKK
2 stops25h 46mUnited Airlines
Deal found 12/3$933
This oojo deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/291:45 pmBKK - ONT
1 stop17h 05mSTARLUX Airlines
vie. 1/169:45 pmONT - BKK
1 stop27h 45mSTARLUX Airlines
Deal found 12/3$1,042
This China Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/152:35 amBKK - ONT
1 stop29h 15mChina Airlines
jue. 1/110:50 pmONT - BKK
1 stop23h 15mChina Airlines
Deal found 12/3$1,044
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/297:10 amBKK - ONT
2 stops25h 33mUnited Airlines
vie. 1/166:39 pmONT - BKK
2 stops38h 41mUnited Airlines
Deal found 12/3$1,095
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/297:10 amBKK - ONT
2 stops41h 51mUnited Airlines
jue. 1/151:53 pmONT - BKK
2 stops30h 32mUnited Airlines
Deal found 12/3$1,100
This Gotogate deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/291:45 pmBKK - ONT
1 stop17h 05mMultiple Airlines
jue. 1/1510:50 pmONT - BKK
1 stop26h 55mMultiple Airlines
Deal found 12/3$1,143
This United Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/164:55 pmBKK - ONT
2 stops20h 54mUnited Airlines
dom. 1/46:00 amONT - BKK
2 stops32h 10mUnited Airlines
Deal found 12/2$1,159
This STARLUX Airlines deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/75:40 pmBKK - ONT
1 stop37h 10mSTARLUX Airlines
sáb. 12/139:45 pmONT - BKK
1 stop27h 45mSTARLUX Airlines
Deal found 12/4$1,234
This United Airlines deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/77:10 amBKK - ONT
2 stops28h 32mUnited Airlines
sáb. 12/135:05 amONT - BKK
2 stops28h 15mUnited Airlines
Deal found 12/4$1,283

Find flight deals from Thailand to Ontario

Keep the following information in mind while searching for Thailand to Ontario flight deals. Data was last updated diciembre 4, 2025.

Round-trip from

$678
(FlightHub)

One-way from

$357
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$850
From Thailand to Ontario
Search Deals
One-way flight from Thailand to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Thailand to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 4, 2025.
Use the filters below to find and compare flights from Thailand to Ontario that are best for you.

Fly from

Thailand

Fly to

Ontario

Route

Depart

Return

Price

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

mar. 5/5

1:20 pm-6:00 pm

1 stop18h 40m

Ontario

lun. 5/25

12:10 am-12:10 pm

1 stop22h 00m

$782

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

mié. 5/6

10:50 am-6:00 pm

1 stop21h 10m

Ontario

lun. 5/25

12:10 am-4:20 pm

1 stop26h 10m

$782

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

dom. 4/12

5:30 pm-6:00 pm

1 stop38h 30m

Ontario

sáb. 4/18

12:10 am-9:45 am

1 stop19h 35m

$791

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

jue. 12/25

10:55 am-4:50 pm

1 stop20h 55m

Ontario

jue. 1/8

10:50 pm-4:45 pm

1 stop26h 55m

$844

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

mar. 1/27

2:05 pm-4:50 pm

1 stop17h 45m

Ontario

dom. 2/8

10:50 pm-9:50 am

1 stop20h 00m

$852

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

sáb. 1/17

1:45 pm-3:50 pm

1 stop17h 05m

Ontario

sáb. 1/24

9:45 pm-12:35 pm

1 stop23h 50m

$862

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

lun. 1/26

5:50 pm-4:50 pm

1 stop38h 00m

Ontario

jue. 1/29

10:50 pm-1:35 am

1 stop35h 45m

$898

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

lun. 1/26

7:10 am-8:58 pm

2 stops28h 48m

Ontario

jue. 1/29

6:00 am-12:20 am

2 stops27h 20m

$911

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

mar. 1/27

7:10 am-5:43 pm

2 stops25h 33m

Ontario

dom. 2/8

6:00 am-12:20 am

2 stops27h 20m

$914

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

dom. 4/12

3:40 pm-12:20 pm

2 stops34h 40m

Ontario

dom. 4/19

6:00 am-4:35 am

2 stops32h 35m

$928

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 33 results
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Best time to book a flight from Thailand to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Thailand with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Thailand to Ontario?

Currently, September is the cheapest month in which you can book a flight from Thailand to Ontario (average of $588). Flying from Thailand to Ontario in January is currently the most expensive (average of $766). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TH to ONT?

Find hourly flight availability from Thailand to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 4, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 55% on flights from Thailand to Ontario by exploring options for tickets in the afternoon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated diciembre 4, 2025.
Read reviews from past customers who have flown STARLUX Airlines and China Airlines from Thailand to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
243 reviews

Boarding

8.9

Food

8.7

Entertainment

8.9

Crew

9.2

Comfort

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
STARLUX Airlines
8.9
Very good
243 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Boarding

8.9

Food

8.7

Entertainment

8.9

Crew

9.2

Comfort

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
China Airlines
8.3
Very good
787 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Boarding

8.9

Food

8.7

Entertainment

8.9

Crew

9.2

Comfort

8.9

Overall

8.9

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Related info for your journey

Find useful and relevant information for your journey from Thailand to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Thailand?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Thailand. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Thailand to Ontario?

    A quick flight from Thailand to Ontario can take about 18h 40m. China Airlines provides one of the quickest options available for as low as $782. There are 8280 mi between Thailand and Ontario.

  • What are the most popular routes from Thailand to Ontario?

    Most travelers choose Bangkok Suvarnabhumi - Ontario, Bangkok Don Mueang Intl - Ontario or Krabi - Ontario when deciding on the best route from Thailand to Ontario.

  • Can I find deals for flights from Thailand to Ontario that include hotel bookings?

    Yes. In addition to deals on Thailand to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Thailand to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Ontario.

  • Can I find deals for business class flights from Thailand to Ontario?

    Yes. Cheapflights offers flight deals from Thailand to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Thailand to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Thailand to Ontario (average of $588). Flying from Thailand to Ontario in January is currently the most expensive (average of $766). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Thailand to Ontario

Discover the top 2 airlines that operate flights from Thailand to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$735Average$960FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$750Average$911FlexibilityNo cancel feeOn-timeN/A

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