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Cheap flights from Bangkok to Ontario from ฿15,283

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 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
12 Sep — 19 Sep1
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 13 August 2026.

Thu 3/913:20 -
1 stop19h 20m
Sun 6/900:45 -
1 stop21h 25m
Deal found 9/8฿26,133
Tue 8/902:40 -
1 stop30h 00m
Thu 24/900:10 -
1 stop22h 00m
Deal found 10/8฿26,464
Wed 2/913:20 -
1 stop19h 20m
Tue 15/900:10 -
1 stop26h 10m
Deal found 11/8฿26,497
Wed 2/913:20 -
1 stop19h 20m
Tue 8/900:45 -
1 stop25h 35m
Deal found 9/8฿26,530
Mon 7/913:20 -
1 stop19h 20m
Sun 13/900:45 -
1 stop34h 40m
Deal found 10/8฿26,761
Tue 13/1013:20 -
1 stop18h 40m
Tue 27/1023:50 -
1 stop26h 55m
Deal found 8/8฿26,828
Wed 9/913:20 -
1 stop19h 20m
Sun 22/1122:50 -
1 stop23h 15m
Deal found 12/8฿26,993
Tue 1/917:30 -
1 stop39h 10m
Mon 7/900:45 -
1 stop19h 00m
Deal found 9/8฿27,125
Mon 16/1114:05 -
1 stop18h 00m
Mon 7/1222:50 -
1 stop35h 45m
Deal found 10/8฿27,423
Sat 12/913:10 -
1 stop17h 55m
Fri 27/1121:45 -
1 stop23h 50m
Deal found 10/8฿27,688
Sat 26/913:10 -
1 stop17h 55m
Sat 3/1023:30 -
1 stop22h 30m
Deal found 12/8฿27,919
Thu 3/908:35 -
2 stops24h 05m
Sun 6/900:45 -
1 stop28h 45m
Deal found 9/8฿36,024

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 13 August 2026.

Round-trip from

฿26,133

One-way from

฿15,283

Popular in

April

Cheapest in

February

Average price

฿28,118
China Airlines
  • China Airlines
  • 3/9-6/9
  • 2 total stops
  • 40h 45m total
  • Bangkok to Ontario
Search Deals
China Airlines
  • China Airlines
  • 23/11
  • 1 total stop
  • 21h 10m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿132,197 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (฿59,069 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 13 August 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 Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Mon 14/9

02:40-18:40

1 stop30h 00m

Ontario

Tue 24/11

22:50-16:45

1 stop26h 55m

฿28,151

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Tue 15/9

13:20-18:40

1 stop19h 20m

Ontario

Thu 26/11

22:50-01:35

1 stop35h 45m

฿28,151
Fastest return journey

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Wed 20/1

10:55-17:05

1 stop21h 10m

Ontario

Sun 31/1

22:50-16:45

1 stop26h 55m

฿31,161

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Tue 1/9

09:35-20:01

2 stops48h 26m

Ontario

Mon 7/9

19:13-04:35

2 stops43h 22m

฿32,451

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Fri 25/9

09:35-17:46

2 stops46h 11m

Ontario

Mon 28/9

06:06-23:55

2 stops27h 49m

฿32,550

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Tue 1/9

09:35-20:01

2 stops24h 26m

Ontario

Fri 4/9

05:00-23:55

2 stops28h 55m

฿32,749

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Thu 10/9

09:35-20:01

2 stops24h 26m

Ontario

Fri 18/9

13:56-09:35

2 stops29h 39m

฿32,914

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Wed 9/9

09:35-20:01

2 stops24h 26m

Ontario

Fri 25/9

18:32-09:35

2 stops25h 03m

฿32,947

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Wed 2/9

09:35-20:01

2 stops24h 26m

Ontario

Wed 16/9

13:56-09:35

2 stops29h 39m

฿32,947

BangkokOntario

BKK Bangkok Suvarnabhumi - ONT Ontario

BKKONT

Bangkok Suvarnabhumi

Tue 1/9

17:50-18:40

2 stops38h 50m

Ontario

Mon 7/9

00:45-16:20

1 stop25h 35m

฿34,469

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 35 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

No data available for this route at this time. Please check back soon.

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 18h 26m. 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.

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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