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Ontario

$438+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Find 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 October 16, 2025.

This Gotogate deal was found by Cheapflights users on 10/16. 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.
Sun 12/212:35 amBKK - ONT
1 stop29h 15mChina Airlines
Sun 12/2810:50 pmONT - BKK
1 stop23h 15mChina Airlines
Deal found 10/16$700
This Gotogate deal was found by Cheapflights users on 10/15. 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.
Thu 10/3010:55 amBKK - ONT
1 stop20h 55mChina Airlines
Thu 11/1310:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 10/15$707
This Gotogate deal was found by Cheapflights users on 10/16. 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.
Wed 10/2910:55 amBKK - ONT
1 stop20h 55mChina Airlines
Thu 11/1310:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 10/16$708
This Gotogate deal was found by Cheapflights users on 10/15. 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.
Tue 11/2510:55 amBKK - ONT
1 stop20h 55mChina Airlines
Tue 12/210:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 10/15$721
This Gotogate deal was found by Cheapflights users on 10/15. 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.
Thu 10/165:30 pmBKK - ONT
1 stop38h 30mChina Airlines
Fri 10/3111:50 pmONT - BKK
1 stop23h 15mChina Airlines
Deal found 10/15$722
This Gotogate deal was found by Cheapflights users on 10/16. 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.
Fri 11/2110:55 amBKK - ONT
1 stop20h 55mChina Airlines
Mon 12/110:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 10/16$724
This Gotogate deal was found by Cheapflights users on 10/15. 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.
Wed 10/2910:55 amBKK - ONT
1 stop20h 55mChina Airlines
Fri 11/710:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 10/15$725
This Vliegwinkel deal was found by Cheapflights users on 10/16. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/92:05 pmBKK - ONT
1 stop17h 45mChina Airlines
Sun 11/2310:50 pmONT - BKK
1 stop20h 00mChina Airlines
Deal found 10/16$726
This Gotogate deal was found by Cheapflights users on 10/14. 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.
Thu 10/302:05 pmBKK - ONT
1 stop17h 45mChina Airlines
Tue 11/1110:50 pmONT - BKK
1 stop26h 55mChina Airlines
Deal found 10/14$727
This Gotogate deal was found by Cheapflights users on 10/16. 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.
Sun 11/1610:55 amBKK - ONT
1 stop20h 55mChina Airlines
Mon 11/2410:50 pmONT - BKK
1 stop23h 15mChina Airlines
Deal found 10/16$736
This oojo deal was found by Cheapflights users on 10/16. 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.
Sun 11/25:40 pmBKK - ONT
1 stop37h 50mSTARLUX Airlines
Mon 1/59:45 pmONT - BKK
1 stop23h 50mSTARLUX Airlines
Deal found 10/16$746
This China Airlines deal was found by Cheapflights users on 10/14. 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.
Thu 11/1310:00 pmKBV - ONT
2 stops33h 50mChina Airlines
Mon 11/1710:50 pmONT - KBV
2 stops31h 25mChina Airlines
Deal found 10/14$1,080

Cheap flight deals from Thailand to Ontario

Keep the following information in mind while searching for Thailand to Ontario flight deals. Data was last updated October 16, 2025.

Round-trip from

$700
(Gotogate)

One-way from

$438
(Gotogate)

Popular in

July

Cheapest in

September

Average price

$681
From Thailand to Ontario
Search Deals
One-way flight from Thailand to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($60 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 October 2025
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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 October 16, 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

Fri 11/21

10:55 am-4:50 pm

1 stop20h 55m

Ontario

Mon 12/1

10:50 pm-4:45 pm

1 stop26h 55m

$724

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 11/3

10:55 am-4:50 pm

1 stop20h 55m

Ontario

Mon 11/24

10:50 pm-4:45 pm

1 stop26h 55m

$725

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 11/16

10:55 am-4:50 pm

1 stop20h 55m

Ontario

Mon 11/24

10:50 pm-1:05 pm

1 stop23h 15m

$736

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 1/28

10:55 am-4:50 pm

1 stop20h 55m

Ontario

Sun 2/8

10:50 pm-9:50 am

1 stop20h 00m

$750

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 12/20

2:35 am-4:50 pm

1 stop29h 15m

Ontario

Fri 1/16

10:50 pm-9:50 am

1 stop20h 00m

$756

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 1/15

2:35 am-4:50 pm

1 stop29h 15m

Ontario

Sun 1/25

10:50 pm-9:50 am

1 stop20h 00m

$762

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 10/29

2:35 am-5:50 pm

1 stop29h 15m

Ontario

Tue 11/11

10:50 pm-4:45 pm

1 stop26h 55m

$767

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 3/17

2:35 am-5:50 pm

1 stop29h 15m

Ontario

Sun 3/22

11:50 pm-4:45 pm

1 stop26h 55m

$788

KrabiOntario

KBV - ONT

KBVONT

Krabi

Thu 11/13

10:00 pm-4:50 pm

2 stops33h 50m

Ontario

Mon 11/17

10:50 pm-9:15 pm

2 stops31h 25m

$1,080

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Tue 11/18

2:35 am-3:17 pm

2 stops27h 42m

Ontario

Wed 1/7

9:45 pm-9:30 pm

1 stop32h 45m

$1,440

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 37 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 $762). 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 October 16, 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 October 16, 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
219 reviews

Food

8.7

Comfort

8.9

Overall

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
STARLUX Airlines
8.9
Very good
219 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Food

8.7

Comfort

8.9

Overall

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
China Airlines
8.3
Very good
768 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Food

8.7

Comfort

8.9

Overall

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

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 20h 55m. China Airlines provides one of the quickest options available for as low as $724. 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 $762). 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapest$771Average$911FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$828Average$995FlexibilityNo cancel feeOn-time70%

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