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Ontario

$397+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Round-trip from

$846
(Gotogate)

One-way from

$397
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$855
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. 4% potential increase in price ($41 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 April 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 April 17, 2025.

This Gotogate deal was found by Cheapflights users on 4/17. 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 6/65:50 pmBKK - ONT
1 stop37h 15mSTARLUX Airlines
Mon 6/1611:10 pmONT - BKK
1 stop27h 30mSTARLUX Airlines
Deal found 4/17$846
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 12/169:25 amBKK - ONT
2 stops44h 15mUnited Airlines
Sun 1/116:00 amONT - BKK
2 stops56h 10mUnited Airlines
Deal found 4/17$897
This Gotogate deal was found by Cheapflights users on 4/16. 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.
Mon 10/61:20 pmBKK - ONT
1 stop18h 40mChina Airlines
Fri 10/3111:45 pmONT - BKK
1 stop23h 20mChina Airlines
Deal found 4/16$910
This Trip.com deal was found by Cheapflights users on 4/17. 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.
Fri 5/21:20 pmBKK - ONT
1 stop18h 40mMultiple Airlines
Mon 5/198:24 amONT - BKK
2 stops46h 46mMultiple Airlines
Deal found 4/17$1,019
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/36:20 amDMK - ONT
2 stops25h 40mMultiple Airlines
Sat 5/1712:10 amONT - DMK
2 stops22h 30mMultiple Airlines
Deal found 4/16$1,097
This Gurufare deal was found by Cheapflights users on 4/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2111:30 pmBKK - ONT
2 stops32h 50mKorean Air
Wed 7/26:30 amONT - BKK
2 stops26h 55mKorean Air
Deal found 4/17$1,359
This Ovago deal was found by Cheapflights users on 4/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/248:05 amBKK - ONT
2 stops21h 45mJapan Airlines
Tue 7/16:00 amONT - BKK
2 stops27h 00mJapan Airlines
Deal found 4/17$1,395
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/199:50 amBKK - ONT
2 stops26h 45mDelta
Sat 6/2811:05 amONT - BKK
2 stops48h 00mDelta
Deal found 4/17$1,423
This StudentUniverse deal was found by Cheapflights users on 4/17. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/12:30 amBKK - ONT
2 stops29h 53mQatar Airways
Wed 10/811:30 amONT - BKK
2 stops28h 45mQatar Airways
Deal found 4/17$1,845
This oojo deal was found by Cheapflights users on 4/17. 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.
Sat 5/108:55 pmBKK - ONT
2 stops38h 16mEtihad Airways
Sun 5/2510:59 pmONT - BKK
2 stops34h 56mEtihad Airways
Deal found 4/17$2,603
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/38:05 amBKK - ONT
2 stops24h 56mAmerican Airlines
Thu 7/311:59 pmONT - BKK
2 stops49h 11mAmerican Airlines
Deal found 4/16$4,183

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 April 17, 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 6/6

5:50 pm-5:05 pm

1 stop37h 15m

Ontario

Mon 6/16

11:10 pm-4:40 pm

1 stop27h 30m

$846

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 9/2

1:20 pm-6:40 pm

1 stop19h 20m

Ontario

Tue 10/7

12:10 am-9:45 am

1 stop19h 35m

$897

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 5/19

9:35 am-2:25 pm

2 stops42h 50m

Ontario

Mon 6/30

6:00 am-11:55 pm

2 stops27h 55m

$900

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 5/2

1:20 pm-6:00 pm

1 stop18h 40m

Ontario

Mon 5/19

8:24 am-9:10 pm

2 stops46h 46m

$1,019

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Sat 5/3

6:20 am-6:00 pm

2 stops25h 40m

Ontario

Sat 5/17

12:10 am-12:40 pm

2 stops22h 30m

$1,097

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 5/21

11:30 pm-6:20 pm

2 stops32h 50m

Ontario

Wed 7/2

6:30 am-11:25 pm

2 stops26h 55m

$1,359

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 5/24

8:05 am-3:50 pm

2 stops21h 45m

Ontario

Tue 7/1

6:00 am-11:00 pm

2 stops27h 00m

$1,395

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 5/19

9:50 am-10:35 pm

2 stops26h 45m

Ontario

Sat 6/28

11:05 am-1:05 am

2 stops48h 00m

$1,423

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/1

2:30 am-6:23 pm

2 stops29h 53m

Ontario

Wed 10/8

11:30 am-6:15 am

2 stops28h 45m

$1,845

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 5/10

8:55 pm-9:11 pm

2 stops38h 16m

Ontario

Sun 5/25

10:59 pm-11:55 pm

2 stops34h 56m

$2,603

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 20 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, 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 April 17, 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 April 17, 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
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
154 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Korean Air
8.4
Very good
1,064 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,447 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
China Airlines
8.2
Very good
729 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Delta
8.0
Very good
7,917 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Crew

9.3

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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 ($524), United Airlines ($646), and Korean Air ($1,001).

  • 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$872Average$954FlexibilityNo cancel feeOn-time70%

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