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฿15,180+ Cheap flights to Ontario

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
4 May — 11 May1
1 adult

Flights to Ontario in 2025

Find the latest flights to Ontario in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 29 April 2025.

Return from

฿25,401

One-way from

฿15,180

Popular in

July

Cheapest in

October

Average price

฿28,785
Cathay Pacific
  • Cathay Pacific
  • 7/10-30/10
  • 2 total stops
  • 39h 40m total
  • Bangkok to Los Angeles
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29/5
  • 29/5
  • 2 total stops
  • 38h 51m total
  • Bangkok to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (฿88,851 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿10,205 potential savings vs. average return price).
Search Deals
Average for return flights in April 2025
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Find flight deals to Ontario

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 29 April 2025.

Sat 11/1010:50BKK - ONT
1 stop21h 10mChina Airlines
Thu 23/1000:10ONT - BKK
1 stop26h 10mChina Airlines
Deal found 28/4฿28,149
Sat 11/1013:10BKK - ONT
1 stop17h 55mSTARLUX Airlines
Fri 24/1023:10ONT - BKK
1 stop27h 20mSTARLUX Airlines
Deal found 28/4฿28,618
Tue 10/609:35BKK - ONT
2 stops40h 39mUnited Airlines
Sun 29/606:10ONT - BKK
2 stops56h 25mUnited Airlines
Deal found 28/4฿29,657
Sat 11/1013:20BKK - ONT
1 stop18h 40mMultiple Airlines
Fri 24/1007:00ONT - BKK
2 stops26h 25mMultiple Airlines
Deal found 28/4฿34,549
Wed 19/1103:00BKK - ONT
2 stops34h 37mQatar Airways
Sun 7/1206:00ONT - BKK
2 stops32h 55mQatar Airways
Deal found 29/4฿57,034
Sat 26/702:35BKK - ONT
2 stops45h 50mเดลต้า
Sun 10/817:50ONT - BKK
2 stops37h 55mเดลต้า
Deal found 28/4฿59,950
Mon 9/607:25DMK - ONT
1 stop23h 40mMultiple Airlines
Mon 16/623:10ONT - DMK
1 stop22h 35mMultiple Airlines
Deal found 28/4฿82,703

Cheapflights Fare Finder

Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 29 April 2025.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Bangkok

Route

Depart

Return

Price

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 11/10

10:50-18:00

1 stop21h 10m

Ontario

Thu 23/10

00:10-16:20

1 stop26h 10m

฿28,149

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 11/10

13:10-17:05

1 stop17h 55m

Ontario

Fri 24/10

23:10-16:30

1 stop27h 20m

฿28,618

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 10/6

09:35-12:14

2 stops40h 39m

Ontario

Wed 25/6

06:00-04:35

2 stops56h 35m

฿29,657

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 11/10

13:20-18:00

1 stop18h 40m

Ontario

Fri 24/10

07:00-23:25

2 stops26h 25m

฿34,549

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 26/7

02:35-10:25

2 stops45h 50m

Ontario

Sun 10/8

17:50-21:45

2 stops37h 55m

฿59,950

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 10/7

02:30-18:04

2 stops29h 34m

Ontario

Tue 12/8

12:00-06:15

2 stops28h 15m

฿64,373

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Mon 9/6

07:25-17:05

1 stop23h 40m

Ontario

Mon 16/6

23:10-11:45

1 stop22h 35m

฿82,703

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 12/6

20:55-21:59

2 stops39h 04m

Ontario

Fri 27/6

23:59-07:10

2 stops41h 11m

฿87,361

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 29/5

22:45-23:36

2 stops38h 51m

฿15,180

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 6/6

13:10-17:05

1 stop17h 55m

฿17,593

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 16 results
1
2

Best time to book a flight to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario 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 to Ontario

How long is the flight to Ontario?

On average, a flight from Bangkok to Ontario takes 20 hours 17 minutes. Flights to Ontario from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ontario?

The most popular airline flying from Bangkok to Ontario is China Airlines.

China Airlines

China Airlines

From ฿833

What are the cheapest airlines that fly to Ontario?

The cheapest airline flying from Bangkok to Ontario is China Airlines.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 mm per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 29 April 2025.
Read reviews from past customers who have flown STARLUX Airlines, Japan Airlines and China Airlines to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
Check prices

Overall

9.1

Boarding

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
STARLUX Airlines
9.1
Wonderful
Check prices

Overall

9.1

Boarding

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very Good
1,459 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Overall

9.1

Boarding

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very Good
729 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Overall

9.1

Boarding

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
เดลต้า
8.0
Very Good
7,929 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Overall

9.1

Boarding

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Qatar Airways
7.4
Good
3,563 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Overall

9.1

Boarding

9.0

Crew

9.3

Comfort

9.0

Food

8.9

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

FAQs about flying to Ontario

  • What airport do you fly into for flights to Ontario?

    Travellers will need to book flights to Ontario (ONT) if they wish to fly to Ontario. The Ontario airport is 4.9 km from the city centre.

  • Can I find cheaper flights to Ontario if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ontario?

    Based on reviews from Cheapflights users, China Airlines is rated the highest out of the airlines that fly to Ontario.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, Bangkok offers the quickest one-way flight (17 hours 55 minutes).

  • Does Ontario have rental cars?

    Yes. Those touching down at Ontario can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ontario?

    Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 km away from Ontario).

See more FAQs

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How does Cheapflights help users find flights to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights 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 to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights to Ontario with no change fees?

Yes, we can. To see specific flights to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can track prices for flights to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals to set up your price alerts.

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