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Cheap flights from Bangkok to Ontario from ฿14,786

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
5 May — 12 May1
1 adult

Cheap flight deals from Bangkok to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Bangkok (TH1) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 April 2025.

Round-trip from

฿28,037

One-way from

฿14,786

Popular in

November

Cheapest in

February

Average price

฿33,978
China Airlines
  • China Airlines
  • 11/10-23/10
  • 2 total stops
  • 47h 20m total
  • Bangkok to Ontario
Search Deals
29/5
  • 29/5
  • 2 total stops
  • 38h 51m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (฿5,431 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿14,262 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Bangkok to Ontario

Cheapest flights from Bangkok to Ontario
Explore the most affordable flight options available from Bangkok to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Sat 11/1010:50BKK - ONT
1 stop21h 10mChina Airlines
Thu 23/1000:10ONT - BKK
1 stop26h 10mChina Airlines
Deal found 28/4฿28,037
Sat 11/1013:10BKK - ONT
1 stop17h 55mSTARLUX Airlines
Fri 24/1023:10ONT - BKK
1 stop27h 20mSTARLUX Airlines
Deal found 28/4฿28,504
Tue 10/609:35BKK - ONT
2 stops40h 39mUnited Airlines
Sun 29/606:10ONT - BKK
2 stops56h 25mUnited Airlines
Deal found 28/4฿29,539
Thu 1/517:30BKK - ONT
1 stop38h 30mMultiple Airlines
Thu 8/506:00ONT - BKK
2 stops27h 40mMultiple Airlines
Deal found 30/4฿35,480
Sun 26/1001:00BKK - ONT
2 stops35h 42mKorean Air
Wed 11/207:00ONT - BKK
2 stops39h 15mKorean Air
Deal found 29/4฿45,460
Wed 19/1103:00BKK - ONT
2 stops34h 37mQatar Airways
Sun 7/1206:00ONT - BKK
2 stops32h 55mQatar Airways
Deal found 29/4฿56,808

Cheapflights Fare Finder

Customise your flight search to find flights from Bangkok 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 17,341 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Bangkok to Ontario that are best for you.

Fly from

Bangkok

Fly to

Ontario

Route

Depart

Return

Price

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 11/10

10:50-18:00

1 stop21h 10m

Ontario

Thu 23/10

00:10-16:20

1 stop26h 10m

฿28,037

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 11/10

13:10-17:05

1 stop17h 55m

Ontario

Fri 24/10

23:10-16:30

1 stop27h 20m

฿28,504

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 10/6

09:35-12:14

2 stops40h 39m

Ontario

Wed 25/6

06:00-04:35

2 stops56h 35m

฿29,539

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 13/6

03:00-17:05

2 stops28h 05m

Ontario

Sat 21/6

23:10-18:25

2 stops29h 15m

฿36,381

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 26/10

01:00-22:42

2 stops35h 42m

Ontario

Wed 11/2

07:00-13:15

2 stops39h 15m

฿45,460

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 10/7

02:30-18:04

2 stops29h 34m

Ontario

Tue 12/8

12:00-06:15

2 stops28h 15m

฿64,118

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 12/6

20:55-21:59

2 stops39h 04m

Ontario

Sat 28/6

23:59-07:10

2 stops41h 11m

฿86,915

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 29/5

22:45-23:36

2 stops38h 51m

฿14,786

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Sun 25/5

02:45-23:36

2 stops34h 51m

฿16,622

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 19/5

02:40-18:00

1 stop29h 20m

฿17,423

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 16 results
1
2

Best time to book a flight from Bangkok to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Bangkok with our price prediction graph.
Estimated return 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 Bangkok to Ontario

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 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

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 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

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 30 April 2025.
To help decide which airline to fly from Bangkok to Ontario, see what other customers have to say about STARLUX Airlines, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

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
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

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
1,068 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

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
1,459 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

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
Check prices

Food

8.9

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

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.
เดลต้า
8.0
Very Good
7,934 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Food

8.9

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Comfort

9.0

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 Bangkok 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 Bangkok?

    If you book a flight to Ontario from Bangkok, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 4.9 km from the centre of Ontario. There are 0 flights from Bangkok to Ontario per day from 1 airline.

  • What are the cheapest airlines flying from Bangkok to Ontario round-trip?

    Cheapflights users have booked flights from Bangkok to Ontario return from ฿28,037. Other airlines that can offer you cheap pricing are STARLUX Airlines, from ฿28,504, and United Airlines, from ฿29,539. You may be able to fly from Bangkok to Ontario for 13% less than the average price by searching for these airlines.

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

    ฿17,423 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on STARLUX Airlines and United Airlines, with prices starting from ฿17,657 and ฿21,295, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Bangkok 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Bangkok to Ontario

Discover the top airline that operate flights from Bangkok 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 17,341 searches. Data last updated 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest฿27,799Average฿30,900FlexibilityNo cancel feeOn-time70%
Search China Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Bangkok to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Bangkok to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Bangkok to Ontario?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Bangkok to Ontario for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Bangkok to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Bangkok to Ontario with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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