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Cheap flights from Bangkok to Ontario from ฿14,827

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 16/4. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
10 Apr — 17 Apr1
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 11 March 2026.

Fri 17/413:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Sat 2/523:10
ONT
-
BKK
1 stop27h 30m
STARLUX Airlines
Deal found 7/3฿24,501
Thu 23/402:40
BKK
-
ONT
1 stop29h 20m
China Airlines
Thu 30/400:10
ONT
-
BKK
1 stop35h 15m
China Airlines
Deal found 10/3฿24,595
Sun 6/913:20
BKK
-
ONT
1 stop19h 20m
China Airlines
Wed 16/900:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 7/3฿24,817
Sat 20/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Mon 27/700:45
ONT
-
BKK
1 stop25h 35m
China Airlines
Deal found 9/3฿24,880
Fri 4/910:50
BKK
-
ONT
1 stop21h 50m
China Airlines
Mon 7/900:45
ONT
-
BKK
1 stop21h 25m
China Airlines
Deal found 9/3฿24,912
Fri 30/1017:50
BKK
-
ONT
1 stop38h 00m
China Airlines
Thu 5/1122:50
ONT
-
BKK
1 stop35h 45m
China Airlines
Deal found 9/3฿25,006
Mon 27/413:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Mon 11/523:10
ONT
-
BKK
1 stop27h 30m
STARLUX Airlines
Deal found 10/3฿25,038
Mon 11/502:40
BKK
-
ONT
1 stop29h 20m
China Airlines
Thu 11/600:10
ONT
-
BKK
1 stop26h 10m
China Airlines
Deal found 11/3฿25,164
Wed 20/510:50
BKK
-
ONT
1 stop21h 10m
China Airlines
Mon 25/500:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 11/3฿25,228
Wed 10/613:20
BKK
-
ONT
1 stop18h 40m
China Airlines
Tue 23/600:10
ONT
-
BKK
1 stop22h 00m
China Airlines
Deal found 11/3฿25,259
Sat 20/613:10
BKK
-
ONT
1 stop17h 55m
Multiple Airlines
Tue 28/707:00
ONT
-
BKK
2 stops26h 35m
Multiple Airlines
Deal found 11/3฿25,512
Fri 17/406:40
DMK
-
ONT
2 stops25h 20m
Multiple Airlines
Fri 1/500:10
ONT
-
DMK
2 stops24h 00m
Multiple Airlines
Deal found 6/3฿40,718

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 11 March 2026.

Round-trip from

฿24,501

One-way from

฿14,827

Popular in

April

Cheapest in

February

Average price

฿22,193
STARLUX Airlines
  • STARLUX Airlines
  • 17/4-2/5
  • 2 total stops
  • 45h 25m total
  • Bangkok to Ontario
Search Deals
China Airlines
  • China Airlines
  • 16/4
  • 1 total stop
  • 21h 10m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (฿78,695 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿23,006 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 11 March 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
Fastest return journey

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 4/9

13:20-18:40

1 stop19h 20m

Ontario

Mon 7/9

00:45-12:10

1 stop21h 25m

฿24,880

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 4/9

09:35-18:11

2 stops46h 36m

Ontario

Tue 8/9

08:00-04:35

2 stops54h 35m

฿28,389

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 12/5

09:35-22:59

2 stops27h 24m

Ontario

Mon 18/5

18:59-09:35

2 stops24h 36m

฿28,768

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 25/6

17:50-18:00

2 stops38h 10m

Ontario

Tue 30/6

00:45-16:20

1 stop25h 35m

฿31,993

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 13/4

15:45-12:20

2 stops34h 35m

Ontario

Thu 23/4

05:10-23:55

2 stops28h 45m

฿33,384

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 5/4

15:45-09:56

2 stops56h 11m

Ontario

Tue 14/4

13:27-09:35

2 stops30h 08m

฿33,605

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 14/5

09:35-22:59

2 stops27h 24m

Ontario

Sun 31/5

06:00-09:35

2 stops37h 35m

฿34,427

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 30/5

15:45-12:12

2 stops34h 27m

Ontario

Sat 6/6

13:50-09:35

2 stops53h 45m

฿35,376

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 3/5

02:40-18:00

1 stop29h 20m

Ontario

Sat 16/5

00:10-13:20

2 stops23h 10m

฿39,169

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 17/4

17:50-18:00

2 stops38h 10m

Ontario

Fri 1/5

00:10-12:10

1 stop22h 00m

฿40,497

Flights are sorted by cheapest return flights first.

Deals found on 8/3

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 ฿15,680). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿23,426). 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 and United Airlines can get you from Bangkok to Ontario in just under 30h. Your travel time can differ by up to 16h 36m. There are 13325 km between Bangkok and Ontario. This flight may include one or multiple stops.

  • 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 ฿15,680). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿23,426). 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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