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Cheap flights from Bangkok to Ontario from ฿14,321

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 24/3. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
16 Mar — 23 Mar1
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 February 2026.

Mon 23/310:55
BKK
-
ONT
1 stop20h 55m
China Airlines
Mon 6/400:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 13/2฿23,175
Wed 16/913:20
BKK
-
ONT
1 stop18h 40m
China Airlines
Tue 29/900:10
ONT
-
BKK
1 stop35h 15m
China Airlines
Deal found 11/2฿24,013
Sat 20/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Mon 27/700:45
ONT
-
BKK
1 stop25h 35m
China Airlines
Deal found 11/2฿24,045
Wed 17/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Sun 21/600:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 12/2฿24,076
Tue 14/413:20
BKK
-
ONT
1 stop18h 40m
China Airlines
Tue 21/400:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 13/2฿24,138
Fri 13/310:55
BKK
-
ONT
1 stop20h 55m
China Airlines
Mon 16/323:50
ONT
-
BKK
1 stop20h 00m
China Airlines
Deal found 13/2฿24,169
Thu 12/314:05
BKK
-
ONT
1 stop17h 45m
China Airlines
Sun 15/323:50
ONT
-
BKK
1 stop20h 00m
China Airlines
Deal found 13/2฿24,200
Fri 20/314:05
BKK
-
ONT
1 stop17h 45m
China Airlines
Mon 23/323:50
ONT
-
BKK
1 stop26h 55m
China Airlines
Deal found 13/2฿24,231
Wed 6/502:40
BKK
-
ONT
1 stop29h 20m
China Airlines
Wed 24/600:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 13/2฿24,262
Fri 20/314:05
BKK
-
ONT
1 stop17h 45m
China Airlines
Sun 29/300:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 12/2฿24,324
Sat 18/413:20
BKK
-
ONT
1 stop18h 40m
China Airlines
Mon 27/400:10
ONT
-
BKK
1 stop22h 00m
China Airlines
Deal found 13/2฿24,479
Thu 12/314:05
BKK
-
ONT
1 stop17h 45m
China Airlines
Sun 13/900:45
ONT
-
BKK
1 stop21h 25m
China Airlines
Deal found 13/2฿24,510

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 February 2026.

Round-trip from

฿24,045

One-way from

฿14,321

Popular in

April

Cheapest in

March

Average price

฿23,703
China Airlines
  • China Airlines
  • 20/6-27/7
  • 2 total stops
  • 64h 05m total
  • Bangkok to Ontario
Search Deals
China Airlines
  • China Airlines
  • 24/3
  • 1 total stop
  • 20h 55m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (฿60,052 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿21,028 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 February 2026.
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

Mon 13/4

17:30-18:00

1 stop38h 30m

Ontario

Fri 24/4

00:10-16:20

1 stop26h 10m

฿25,940

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 13/4

17:30-18:00

1 stop38h 30m

Ontario

Thu 23/4

00:10-16:20

1 stop26h 10m

฿25,940

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 23/4

10:50-18:00

1 stop21h 10m

Ontario

Sun 26/4

00:10-16:20

1 stop26h 10m

฿26,126

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 21/4

02:40-18:00

1 stop29h 20m

Ontario

Wed 29/4

00:10-16:20

1 stop26h 10m

฿26,126

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 18/4

10:50-18:00

1 stop21h 10m

Ontario

Wed 29/4

00:10-16:20

1 stop26h 10m

฿27,306

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 15/5

13:20-18:00

1 stop18h 40m

Ontario

Mon 25/5

00:10-12:10

1 stop22h 00m

฿27,306

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 21/4

02:40-18:00

1 stop29h 20m

Ontario

Tue 28/4

00:10-09:45

1 stop19h 35m

฿27,306

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 20/4

13:20-18:00

1 stop18h 40m

Ontario

Sat 2/5

00:10-09:45

1 stop19h 35m

฿27,306

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 17/4

13:20-18:00

1 stop18h 40m

Ontario

Sat 2/5

00:10-12:10

1 stop22h 00m

฿27,306

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 18/5

10:50-18:00

1 stop21h 10m

Ontario

Sun 24/5

00:10-01:25

1 stop35h 15m

฿27,306

Flights are sorted by cheapest return flights first.

Deals found on 13/2

Showing 1-10 of 44 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.

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 ฿16,061). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿23,019). 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.

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 38h 30m. 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 ฿16,061). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿23,019). 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

Browse thousands of different options on Cheapflights for your next trip

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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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