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Cheap flights from Bangkok to Ontario from ฿16,980

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
13 Jun — 20 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Bangkok to Ontario

Enter your travel dates to find the best prices.

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 14 May 2026.

Thu 14/502:40
BKK
-
ONT
1 stop29h 20m
China Airlines
Wed 27/500:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 13/5฿28,657
Mon 15/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Sat 27/600:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 9/5฿28,689
Wed 3/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Fri 5/600:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 9/5฿28,786
Sun 13/917:50
BKK
-
ONT
1 stop37h 15m
STARLUX Airlines
Sat 7/1121:45
ONT
-
BKK
1 stop23h 50m
STARLUX Airlines
Deal found 12/5฿28,818
Wed 3/613:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Mon 17/823:55
ONT
-
BKK
1 stop26h 45m
STARLUX Airlines
Deal found 13/5฿28,851
Fri 19/613:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Sat 27/623:10
ONT
-
BKK
1 stop27h 30m
STARLUX Airlines
Deal found 10/5฿28,915
Wed 17/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Wed 24/600:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 13/5฿29,142
Fri 19/613:20
BKK
-
ONT
1 stop18h 40m
China Airlines
Fri 10/700:45
ONT
-
BKK
1 stop19h 00m
China Airlines
Deal found 12/5฿29,174
Mon 1/610:50
BKK
-
ONT
1 stop21h 10m
China Airlines
Sun 14/600:10
ONT
-
BKK
1 stop22h 00m
China Airlines
Deal found 9/5฿29,206
Tue 8/917:50
BKK
-
ONT
1 stop37h 15m
STARLUX Airlines
Mon 21/923:30
ONT
-
BKK
1 stop22h 30m
STARLUX Airlines
Deal found 12/5฿29,239
Wed 11/1113:45
BKK
-
ONT
1 stop17h 45m
STARLUX Airlines
Mon 30/1121:45
ONT
-
BKK
1 stop23h 50m
STARLUX Airlines
Deal found 11/5฿29,303
Wed 3/606:40
DMK
-
ONT
2 stops25h 20m
Multiple Airlines
Fri 5/600:10
ONT
-
DMK
2 stops32h 30m
Multiple Airlines
Deal found 9/5฿34,770

Find 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 14 May 2026.

Round-trip from

฿28,657

One-way from

฿16,980

Popular in

June

Cheapest in

February

Average price

฿31,050
China Airlines
  • China Airlines
  • 15/6-27/6
  • 2 total stops
  • 38h 15m total
  • Bangkok to Ontario
Search Deals
STARLUX Airlines
  • STARLUX Airlines
  • 4/6
  • 1 total stop
  • 37h 15m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (฿193,173 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿21,072 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 14 May 2026.
Use the filters below to find and compare flights from Bangkok to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 4/6

02:40-18:00

1 stop29h 20m

Ontario

Thu 11/6

00:10-12:10

1 stop22h 00m

฿29,174

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 19/6

02:40-18:00

1 stop29h 20m

Ontario

Mon 27/7

00:45-12:10

1 stop21h 25m

฿29,562
Fastest return journey

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 1/10

13:20-18:00

1 stop18h 40m

Ontario

Sun 1/11

22:50-09:50

1 stop20h 00m

฿29,595

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 2/10

13:20-18:00

1 stop18h 40m

Ontario

Thu 29/10

23:50-09:50

1 stop20h 00m

฿29,595

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 11/6

17:30-18:00

1 stop38h 30m

Ontario

Sun 12/7

00:45-09:45

1 stop19h 00m

฿29,595

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 4/10

13:20-18:00

1 stop18h 40m

Ontario

Fri 30/10

23:50-09:50

1 stop20h 00m

฿29,595

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 4/10

13:20-18:00

1 stop18h 40m

Ontario

Sat 31/10

23:50-09:50

1 stop20h 00m

฿29,595

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 17/9

09:35-22:58

2 stops27h 23m

Ontario

Sun 20/9

06:00-04:35

2 stops56h 35m

฿31,212

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 1/10

09:35-20:16

2 stops24h 41m

Ontario

Thu 15/10

06:05-23:55

2 stops27h 50m

฿31,762

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 16/9

09:35-20:04

2 stops24h 29m

Ontario

Wed 30/9

18:32-09:35

2 stops25h 03m

฿31,859

Flights are sorted by cheapest return flights first.

Deals found on 13/5

Showing 1-10 of 40 resultsSorted by cheapest first
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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.

Cheapflights Insights

Everything you need to know about your flight from Bangkok to Ontario

What is the cheapest month to book a flight from Bangkok to Ontario?

Currently, February is the cheapest month in which you can book a flight from Bangkok to Ontario (average of ฿15,687). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿30,759). 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.

How much does it cost for a return flight from Bangkok to Ontario?

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 0 different airlines.

  • How long is the flight from Bangkok to Ontario?

    China Airlines can get you from Bangkok to Ontario in just under 29h 20m. Your travel time can differ by up to . There are 13325 km between Bangkok and Ontario.

  • 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.

  • What is the cheapest month to book a flight from Bangkok to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Bangkok to Ontario (average of ฿15,687). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿30,759). 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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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.

Can Cheapflights notify me if prices for flights from Bangkok to Ontario become cheaper?

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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