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Cheap flights from Bangkok to Ontario from ฿16,845

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
28 May — 4 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 28 April 2026.

Fri 8/513:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Mon 11/523:10
ONT
-
BKK
1 stop27h 30m
STARLUX Airlines
Deal found 25/4฿28,808
Wed 20/513:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Wed 27/523:10
ONT
-
BKK
1 stop22h 50m
STARLUX Airlines
Deal found 24/4฿28,905
Wed 7/1010:50
BKK
-
ONT
1 stop21h 10m
China Airlines
Tue 13/1000:10
ONT
-
BKK
1 stop35h 15m
China Airlines
Deal found 28/4฿29,099
Wed 2/913:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Wed 30/923:10
ONT
-
BKK
1 stop22h 50m
STARLUX Airlines
Deal found 25/4฿29,196
Wed 30/917:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Sat 3/1000:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 27/4฿29,260
Mon 7/913:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Mon 28/923:10
ONT
-
BKK
1 stop22h 50m
STARLUX Airlines
Deal found 23/4฿29,293
Sun 14/617:50
BKK
-
ONT
1 stop37h 15m
STARLUX Airlines
Sat 20/623:10
ONT
-
BKK
1 stop22h 50m
STARLUX Airlines
Deal found 27/4฿29,325
Wed 3/617:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Mon 29/600:10
ONT
-
BKK
1 stop35h 15m
China Airlines
Deal found 23/4฿29,422
Sun 6/917:50
BKK
-
ONT
1 stop37h 15m
STARLUX Airlines
Mon 28/923:10
ONT
-
BKK
1 stop27h 30m
STARLUX Airlines
Deal found 23/4฿29,551
Sun 4/1010:50
BKK
-
ONT
1 stop21h 10m
China Airlines
Tue 27/1023:50
ONT
-
BKK
1 stop23h 15m
China Airlines
Deal found 23/4฿29,616
Fri 18/917:30
BKK
-
ONT
1 stop38h 30m
China Airlines
Thu 24/900:10
ONT
-
BKK
1 stop19h 35m
China Airlines
Deal found 24/4฿29,745
Mon 18/513:10
BKK
-
ONT
1 stop17h 55m
STARLUX Airlines
Fri 29/523:10
ONT
-
BKK
1 stop27h 30m
STARLUX Airlines
Deal found 24/4฿29,875

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 28 April 2026.

Round-trip from

฿28,808

One-way from

฿16,845

Popular in

July

Cheapest in

February

Average price

฿25,413
STARLUX Airlines
  • STARLUX Airlines
  • 8/5-11/5
  • 2 total stops
  • 45h 25m total
  • Bangkok to Ontario
Search Deals
STARLUX Airlines
  • STARLUX Airlines
  • 3/6
  • 1 total stop
  • 17h 55m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿145,035 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿22,638 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 28 April 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

Wed 30/9

17:30-18:00

1 stop38h 30m

Ontario

Sat 3/10

00:10-09:45

1 stop19h 35m

฿29,260

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 1/6

17:30-18:00

1 stop38h 30m

Ontario

Thu 16/7

00:45-16:20

1 stop25h 35m

฿30,715

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 30/9

09:35-20:16

2 stops48h 41m

Ontario

Sun 4/10

06:05-04:35

2 stops56h 30m

฿31,297

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 29/5

15:45-12:12

2 stops34h 27m

Ontario

Wed 15/7

18:39-09:35

2 stops48h 56m

฿31,556

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 18/9

07:00-18:11

2 stops25h 11m

Ontario

Fri 25/9

09:39-09:35

2 stops33h 56m

฿33,172

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 20/6

15:45-22:37

2 stops44h 52m

Ontario

Tue 28/7

13:50-23:55

2 stops44h 05m

฿33,528

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 31/5

17:30-18:00

1 stop38h 30m

Ontario

Sun 12/7

00:45-09:45

1 stop19h 00m

฿33,722

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 20/6

17:50-18:00

2 stops38h 10m

Ontario

Mon 27/7

00:45-01:25

1 stop34h 40m

฿37,893

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 26/8

17:30-18:40

1 stop39h 10m

Ontario

Sat 31/10

23:50-13:35

2 stops23h 45m

฿39,283

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Mon 15/6

07:30-18:00

2 stops24h 30m

Ontario

Sun 28/6

00:10-23:05

2 stops32h 55m

฿39,930

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Showing 1-10 of 38 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 ฿15,681). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿30,748). 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 and United Airlines can get you from Bangkok to Ontario in just under 38h 30m. Your travel time can differ by up to 10h 11m. 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 ฿15,681). Flying from Bangkok to Ontario in July is currently the most expensive (average of ฿30,748). 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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