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Ontario

$490+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
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 June 26, 2025.

Round-trip from

$790
(Gotogate)

One-way from

$490
(flugladen.de)

Popular in

July

Cheapest in

October

Average price

$884
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 ($77 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 June 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 June 26, 2025.

This Gotogate deal was found by Cheapflights users on 6/24. 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
Wed 11/1210:45 pmONT - BKK
1 stop27h 00mChina Airlines
Deal found 6/24$790
This Gotogate deal was found by Cheapflights users on 6/26. 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 12/191:45 pmBKK - ONT
1 stop17h 05mSTARLUX Airlines
Fri 12/269:45 pmONT - BKK
1 stop27h 45mSTARLUX Airlines
Deal found 6/26$851
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 6/259:35 amBKK - ONT
2 stops46h 08mUnited Airlines
Fri 6/276:10 amONT - BKK
2 stops32h 25mUnited Airlines
Deal found 6/24$888
This Travelocity deal was found by Cheapflights users on 6/26. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/249:35 pmBKK - ONT
2 stops40h 40mMultiple Airlines
Mon 8/186:00 amONT - BKK
2 stops32h 35mMultiple Airlines
Deal found 6/26$977
This Mytrip deal was found by Cheapflights users on 6/25. 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.
Fri 7/47:30 amDMK - ONT
2 stops25h 10mMultiple Airlines
Wed 7/1612:45 amONT - DMK
2 stops32h 30mMultiple Airlines
Deal found 6/25$1,089
This Gotogate deal was found by Cheapflights users on 6/25. 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 8/189:25 amKBV - ONT
2 stops47h 15mChina Airlines
Sun 8/3112:45 amONT - KBV
2 stops42h 00mChina Airlines
Deal found 6/25$1,231

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 June 26, 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

Thu 10/30

10:55 am-5:50 pm

1 stop20h 55m

Ontario

Wed 11/12

10:45 pm-4:45 pm

1 stop27h 00m

$790

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 12/19

1:45 pm-3:50 pm

1 stop17h 05m

Ontario

Fri 12/26

9:45 pm-4:30 pm

1 stop27h 45m

$851

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 8/25

7:00 am-8:33 pm

2 stops27h 33m

Ontario

Fri 9/19

6:50 pm-4:35 am

2 stops43h 45m

$892

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 7/24

9:35 pm-12:15 am

2 stops40h 40m

Ontario

Mon 8/18

6:00 am-4:35 am

2 stops32h 35m

$977

KrabiOntario

KBV - ONT

KBVONT

Krabi

Mon 8/18

9:25 am-6:40 pm

2 stops47h 15m

Ontario

Sun 8/31

12:45 am-8:45 am

2 stops42h 00m

$1,231

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 7/21

2:30 am-6:04 pm

2 stops29h 34m

Ontario

Thu 8/21

6:00 am-6:15 am

2 stops34h 15m

$1,327

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 12/6

1:45 pm-3:50 pm

1 stop17h 05m

$490

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 10/2

5:30 pm-6:00 pm

1 stop38h 30m

$504

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Sat 9/6

7:30 am-5:05 pm

2 stops23h 35m

$554

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 9/17

9:35 am-8:33 pm

2 stops24h 58m

$558

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 13 results
1
2

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 June 26, 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.

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 June 26, 2025.
Read reviews from past customers who have flown STARLUX Airlines, China Airlines, and Delta 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
9.1
Wonderful
185 reviews

Entertainment

9.0

Boarding

9.1

Crew

9.3

Overall

9.1

Comfort

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
185 reviews
STARLUX Airlines
9.1
Wonderful
185 reviews

Entertainment

9.0

Boarding

9.1

Crew

9.3

Overall

9.1

Comfort

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
745 reviews
STARLUX Airlines
9.1
Wonderful
185 reviews

Entertainment

9.0

Boarding

9.1

Crew

9.3

Overall

9.1

Comfort

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Delta
8.0
Very good
7,963 reviews
STARLUX Airlines
9.1
Wonderful
185 reviews

Entertainment

9.0

Boarding

9.1

Crew

9.3

Overall

9.1

Comfort

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Qatar Airways
7.4
Good
3,595 reviews
STARLUX Airlines
9.1
Wonderful
185 reviews

Entertainment

9.0

Boarding

9.1

Crew

9.3

Overall

9.1

Comfort

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
United Airlines
7.4
Good
8,838 reviews
STARLUX Airlines
9.1
Wonderful
185 reviews

Entertainment

9.0

Boarding

9.1

Crew

9.3

Overall

9.1

Comfort

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 STARLUX Airlines ($490), China Airlines ($504), and United Airlines ($558).

  • 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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$872Average$961FlexibilityNo cancel feeOn-time70%

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