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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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 May 1, 2025.

Round-trip from

$875
(Gotogate)

One-way from

$438
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$879
From Thailand to Ontario
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One-way flight from Thailand to Ontario
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Highest demand for flights based on searches. 8% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This Gotogate deal was found by Cheapflights users on 5/1. 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.
Mon 9/81:10 pmBKK - ONT
1 stop17h 55mSTARLUX Airlines
Wed 9/1011:10 pmONT - BKK
1 stop22h 50mSTARLUX Airlines
Deal found 5/1$875
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Mon 6/169:35 amBKK - ONT
2 stops51h 10mUnited Airlines
Tue 7/221:19 pmONT - BKK
2 stops49h 16mUnited Airlines
Deal found 5/1$889
This Vakatrip deal was found by Cheapflights users on 5/1. 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 Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/810:50 amBKK - ONT
1 stop21h 50mChina Airlines
Tue 9/912:45 amONT - BKK
1 stop19h 00mChina Airlines
Deal found 5/1$893
This Vakatrip deal was found by Cheapflights users on 4/30. 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 Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/15:30 pmBKK - ONT
1 stop38h 30mMultiple Airlines
Thu 5/86:00 amONT - BKK
2 stops27h 40mMultiple Airlines
Deal found 4/30$1,063
This Mytrip deal was found by Cheapflights users on 5/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/167:30 amDMK - ONT
2 stops23h 35mMultiple Airlines
Mon 7/2112:45 amONT - DMK
2 stops29h 35mMultiple Airlines
Deal found 5/1$1,300
This Korean Air deal was found by Cheapflights users on 4/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/162:35 amBKK - ONT
2 stops28h 31mKorean Air
Sun 8/106:30 amONT - BKK
2 stops25h 15mKorean Air
Deal found 4/30$1,642
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/168:05 amBKK - ONT
2 stops28h 57mAmerican Airlines
Mon 7/2112:59 amONT - BKK
2 stops32h 01mAmerican Airlines
Deal found 5/1$1,701

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 May 1, 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

Mon 9/8

1:10 pm-5:05 pm

1 stop17h 55m

Ontario

Wed 9/10

11:10 pm-12:00 pm

1 stop22h 50m

$875

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 6/16

9:35 am-10:45 pm

2 stops51h 10m

Ontario

Tue 7/22

1:19 pm-4:35 am

2 stops49h 16m

$889

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/8

10:50 am-6:40 pm

1 stop21h 50m

Ontario

Tue 9/9

12:45 am-9:45 am

1 stop19h 00m

$893

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 6/28

2:40 am-6:00 pm

1 stop29h 20m

Ontario

Sun 7/13

4:00 pm-9:45 am

2 stops27h 45m

$1,133

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Mon 6/16

7:30 am-5:05 pm

2 stops23h 35m

Ontario

Mon 7/21

12:45 am-8:20 pm

2 stops29h 35m

$1,300

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 7/16

2:35 am-5:06 pm

2 stops28h 31m

Ontario

Sun 8/10

6:30 am-9:45 pm

2 stops25h 15m

$1,642

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 6/16

8:05 am-11:02 pm

2 stops28h 57m

Ontario

Mon 7/21

12:59 am-11:00 pm

2 stops32h 01m

$1,701

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 8/4

2:30 am-6:04 pm

2 stops29h 34m

Ontario

Thu 9/4

11:39 am-6:15 am

2 stops28h 36m

$2,139

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 6/18

8:55 pm-9:59 pm

2 stops39h 04m

Ontario

Sun 6/29

11:59 pm-11:55 pm

2 stops33h 56m

$2,540

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 5/29

10:45 pm-11:36 pm

2 stops38h 51m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 19 results
1
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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, August is the cheapest month in which you can book a flight from Thailand to Ontario (average of $246). Flying from Thailand to Ontario in March is currently the most expensive (average of $328). 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 May 1, 2025.

When flying from Thailand to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 May 1, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, Korean Air and Japan Airlines from Thailand to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
162 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
162 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,069 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,464 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Delta
8.0
Very good
7,934 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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.

  • What are the cheapest airlines to fly from Thailand to Ontario one-way?

    The cheapest airlines for a one-way flight from Thailand to Ontario are China Airlines ($522), STARLUX Airlines ($527), and Japan Airlines ($640).

  • 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, August is the cheapest month in which you can book a flight from Thailand to Ontario (average of $246). Flying from Thailand to Ontario in March is currently the most expensive (average of $328). 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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Alternative routes for Thailand to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Thailand to Ontario

Discover the top airline 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$872Average$955FlexibilityNo cancel feeOn-time70%

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