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Cheap flights from Bangkok to Ontario from ฿16,860

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 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
17 2月 — 24 2月1
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 12 2月 2025.

Round-trip from

฿28,134

One-way from

฿16,860

Popular in

July

Cheapest in

February

Average price

฿29,701
China Airlines
  • China Airlines
  • 12/4-15/5
  • 2 total stops
  • 60h 30m total
  • Bangkok to Ontario
STARLUX Airlines
  • STARLUX Airlines
  • 18/6
  • 1 total stop
  • 17h 55m total
  • Bangkok to Ontario
Highest demand for flights based on searches. 5% potential increase in price (฿61,762 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (฿23,866 potential savings vs. average return price).
Average for round-trip flights in February 2025

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 12 2月 2025.

週四 13/217:50BKK - ONT
1 stop38h 00mChina Airlines
週四 20/222:45ONT - BKK
1 stop35h 50mChina Airlines
Deal found 11/2฿28,032
週三 1/1007:00BKK - ONT
2 stops22h 46mUnited Airlines
週三 22/1005:45ONT - BKK
2 stops28h 10mUnited Airlines
Deal found 10/2฿30,110
週三 18/613:10BKK - ONT
1 stop17h 55mSTARLUX Airlines
週三 18/623:10ONT - BKK
1 stop27h 30mSTARLUX Airlines
Deal found 11/2฿31,063
週三 28/509:35BKK - ONT
2 stops22h 50mMultiple Airlines
週四 12/618:55ONT - BKK
2 stops43h 40mMultiple Airlines
Deal found 11/2฿35,253
週一 24/201:00BKK - ONT
2 stops29h 25mKorean Air
週二 4/306:00ONT - BKK
2 stops26h 20mKorean Air
Deal found 11/2฿47,651
週二 28/1003:00BKK - ONT
2 stops29h 17mQatar Airways
週三 19/1111:30ONT - BKK
2 stops27h 25mQatar Airways
Deal found 11/2฿49,729
週日 29/608:05BKK - ONT
2 stops27h 38mAmerican Airlines
週六 12/700:57ONT - BKK
2 stops32h 03mAmerican Airlines
Deal found 11/2฿63,183
週五 14/322:55BKK - ONT
2 stops34h 06mบริติชแอร์เวย์
週日 30/316:30ONT - BKK
2 stops33h 25mบริติชแอร์เวย์
Deal found 11/2฿81,030
週三 30/402:45BKK - ONT
2 stops32h 37mเอทิฮัดแอร์เวย์
週日 11/522:40ONT - BKK
2 stops35h 15mเอทิฮัดแอร์เวย์
Deal found 11/2฿89,920
週二 11/308:05BKK - ONT
2 stops27h 22mJapan Airlines
週三 19/306:00ONT - BKK
2 stops27h 35mJapan Airlines
Deal found 12/2฿133,109
週四 13/307:35BKK - ONT
2 stops29h 10mแอร์แคนาดา
週日 23/306:00ONT - BKK
2 stops33h 15mแอร์แคนาดา
Deal found 12/2฿194,895

Find flights from Bangkok to Ontario within your budget

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 12 2月 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週六 12/4

17:30-18:00

1 stop38h 30m

Ontario

週四 15/5

00:10-12:10

1 stop22h 00m

฿28,134

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週三 18/6

13:10-17:05

1 stop17h 55m

Ontario

週三 18/6

23:10-16:40

1 stop27h 30m

฿31,063

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週二 27/5

07:00-22:45

2 stops29h 45m

Ontario

週六 15/11

13:55-00:05

2 stops43h 10m

฿31,370

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週三 28/5

09:35-18:25

2 stops22h 50m

Ontario

週四 12/6

18:55-04:35

2 stops43h 40m

฿35,253

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週一 24/2

01:00-15:25

2 stops29h 25m

Ontario

週二 4/3

06:00-23:20

2 stops26h 20m

฿47,651

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週日 29/6

08:05-21:43

2 stops27h 38m

Ontario

週六 12/7

00:57-23:00

2 stops32h 03m

฿63,183

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週六 26/7

02:30-22:37

2 stops34h 07m

Ontario

週日 10/8

14:59-13:10

2 stops32h 11m

฿65,907

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週五 14/3

22:55-19:01

2 stops34h 06m

Ontario

週日 30/3

16:30-15:55

2 stops33h 25m

฿81,030

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週三 30/4

02:45-21:22

2 stops32h 37m

Ontario

週日 11/5

22:40-23:55

2 stops35h 15m

฿89,920

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

週二 11/3

08:05-21:27

2 stops27h 22m

Ontario

週三 19/3

06:00-23:35

2 stops27h 35m

฿133,109

Flights are sorted by cheapest return flights first.

Deals found on 11/2

Showing 1-10 of 21 results
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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.

Travel insights for flights from Bangkok to Ontario

Get recent, data-driven insights about flights from Bangkok to Ontario including ideal travel times, pricing trends, and more.

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 12 2月 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

Boarding

9.1

Food

9.0

Crew

9.3

Overall

9.1

Comfort

9.0

Entertainment

9.1

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
STARLUX Airlines
9.1
Wonderful

Boarding

9.1

Food

9.0

Crew

9.3

Overall

9.1

Comfort

9.0

Entertainment

9.1

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

Boarding

9.1

Food

9.0

Crew

9.3

Overall

9.1

Comfort

9.0

Entertainment

9.1

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

Boarding

9.1

Food

9.0

Crew

9.3

Overall

9.1

Comfort

9.0

Entertainment

9.1

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

Boarding

9.1

Food

9.0

Crew

9.3

Overall

9.1

Comfort

9.0

Entertainment

9.1

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

Boarding

9.1

Food

9.0

Crew

9.3

Overall

9.1

Comfort

9.0

Entertainment

9.1

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 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 ฿28,134. Other airlines that can offer you cheap pricing are STARLUX Airlines, from ฿31,063, and United Airlines, from ฿31,370. You may be able to fly from Bangkok to Ontario for 15% less than the average price by searching for these airlines.

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

    ฿16,860 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on China Airlines and United Airlines, with prices starting from ฿17,064 and ฿21,424, 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