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 5 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).

฿16,004+ Flights to Ontario, California

Flights to Ontario in 2025

Return from	฿23,941
One-way from	฿16,004
Popular in	August
Cheapest in	October
Average price	฿28,671

3/7-8/7
2 total stops
55h 05m total
Bangkok to Los Angeles

Search Deals

China Airlines
7/9
1 total stop
30h 00m total
Bangkok to Ontario

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (฿64,591 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (฿10,632 potential savings vs. average return price).

Search Deals

Average for return flights in June 2025

Search Deals

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 14 June 2025.

Fri 14/1113:45BKK - ONT

1 stop17h 05mSTARLUX Airlines

Fri 14/1121:45ONT - BKK

1 stop27h 45mSTARLUX Airlines

Deal found 12/6฿26,500

Tue 16/902:40BKK - ONT

1 stop29h 20mChina Airlines

Tue 23/900:10ONT - BKK

1 stop26h 10mChina Airlines

Deal found 11/6฿27,083

Wed 17/909:35BKK - ONT

2 stops46h 02mUnited Airlines

Wed 24/918:50ONT - BKK

2 stops43h 45mUnited Airlines

Deal found 11/6฿28,833

Wed 29/1002:35BKK - ONT

1 stop29h 15mMultiple Airlines

Fri 20/322:45ONT - BKK

1 stop23h 50mMultiple Airlines

Deal found 11/6฿33,336

Wed 17/915:55DMK - ONT

2 stops40h 05mMultiple Airlines

Wed 24/923:10ONT - DMK

1 stop22h 35mMultiple Airlines

Deal found 11/6฿42,147

Best flights to Ontario
Discover carefully curated flight deals to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 June 2025.

Fri 14/1113:45BKK - ONT

1 stop17h 05mSTARLUX Airlines

Fri 14/1121:45ONT - BKK

1 stop27h 45mSTARLUX Airlines

Deal found 12/6฿26,500

Tue 16/902:40BKK - ONT

1 stop29h 20mChina Airlines

Tue 23/900:10ONT - BKK

1 stop26h 10mChina Airlines

Deal found 11/6฿27,083

Wed 17/909:35BKK - ONT

2 stops24h 58mUnited Airlines

Fri 26/913:53ONT - BKK

2 stops48h 42mUnited Airlines

Deal found 11/6฿28,833

Wed 29/1002:35BKK - ONT

1 stop29h 15mMultiple Airlines

Fri 20/322:45ONT - BKK

1 stop23h 50mMultiple Airlines

Deal found 11/6฿33,336

Wed 2/709:50BKK - ONT

2 stops26h 55mเดลต้า

Sun 27/713:15ONT - BKK

2 stops45h 50mเดลต้า

Deal found 13/6฿44,836

Wed 17/915:55DMK - ONT

2 stops40h 05mMultiple Airlines

Wed 24/923:10ONT - DMK

1 stop22h 35mMultiple Airlines

Deal found 11/6฿42,147

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 14 June 2025 and is based on user searches.

Fri 13/613:10BKK - ONT

1 stop17h 55mSTARLUX Airlines

Fri 27/623:10ONT - BKK

1 stop27h 30mSTARLUX Airlines

Deal found 12/6฿27,342

Fri 20/613:10BKK - ONT

1 stop17h 55mSTARLUX Airlines

Fri 27/623:10ONT - BKK

1 stop27h 30mSTARLUX Airlines

Deal found 12/6฿27,796

Fri 20/609:35BKK - ONT

2 stops46h 04mUnited Airlines

Fri 27/613:19ONT - BKK

2 stops44h 36mUnited Airlines

Deal found 12/6฿29,092

Fri 20/613:20BKK - ONT

1 stop18h 40mChina Airlines

Thu 26/600:10ONT - BKK

1 stop19h 35mChina Airlines

Deal found 12/6฿32,234

Fri 20/620:55BKK - ONT

2 stops39h 04mเอทิฮัดแอร์เวย์

Thu 3/723:59ONT - BKK

2 stops33h 56mเอทิฮัดแอร์เวย์

Deal found 12/6฿86,012

Fri 27/613:20BKK - ONT

1 stop18h 40mChina Airlines

Thu 3/700:45ONT - BKK

1 stop21h 25mChina Airlines

Deal found 12/6฿29,642

Sat 28/602:35BKK - ONT

2 stops34h 11mKorean Air

Sun 13/706:25ONT - BKK

2 stops40h 50mKorean Air

Deal found 12/6฿53,583

Wed 2/709:50BKK - ONT

2 stops26h 55mเดลต้า

Fri 1/817:59ONT - BKK

2 stops37h 46mเดลต้า

Deal found 13/6฿44,836

Thu 3/707:00BKK - ONT

2 stops43h 14mUnited Airlines

Tue 8/706:10ONT - BKK

2 stops56h 25mUnited Airlines

Deal found 12/6฿29,092

Thu 10/708:05BKK - ONT

2 stops24h 48mAmerican Airlines

Fri 25/700:59ONT - BKK

2 stops32h 01mAmerican Airlines

Deal found 13/6฿46,845

Wed 23/707:30DMK - ONT

2 stops25h 10mMultiple Airlines

Sat 2/800:45ONT - DMK

2 stops32h 30mMultiple Airlines

Deal found 13/6฿42,245

Sun 27/708:40BKK - ONT

2 stops53h 33mQatar Airways

Mon 11/812:00ONT - BKK

2 stops35h 25mQatar Airways

Deal found 12/6฿46,262

One-way flights to Ontario
Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated 14 June 2025.

Sun 7/902:40BKK - ONT

1 stop30h 00mChina Airlines

Deal found 11/6฿16,004

Fri 19/917:50BKK - ONT

1 stop37h 15mSTARLUX Airlines

Deal found 12/6฿16,068

Sun 21/902:40DMK - ONT

2 stops35h 00mMultiple Airlines

Deal found 13/6฿17,364

Thu 18/922:50BKK - ONT

2 stops56h 15mMultiple Airlines

Deal found 13/6฿17,656

Sat 20/909:35BKK - ONT

2 stops46h 02mUnited Airlines

Deal found 13/6฿18,174

Mon 22/902:30BKK - ONT

2 stops29h 58mQatar Airways

Deal found 12/6฿22,807

Tue 24/609:45BKK - ONT

2 stops46h 19mJapan Airlines

Deal found 12/6฿29,059

Thu 30/1023:15BKK - ONT

2 stops37h 27mเดลต้า

Deal found 13/6฿32,914

Cheapflights Fare Finder

Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 14/11

13:45-15:50

1 stop17h 05m

Ontario

Fri 14/11

21:45-16:30

1 stop27h 45m

฿26,500

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 16/9

02:40-18:00

1 stop29h 20m

Ontario

Tue 23/9

00:10-16:20

1 stop26h 10m

฿27,083

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 17/9

09:35-12:13

2 stops40h 38m

Ontario

Sat 27/9

09:36-04:35

2 stops52h 59m

฿28,833

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 29/10

02:35-17:50

1 stop29h 15m

Ontario

Fri 20/3

22:45-12:35

1 stop23h 50m

฿33,336

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Wed 17/9

15:55-18:00

2 stops40h 05m

Ontario

Wed 24/9

23:10-11:45

1 stop22h 35m

฿42,147

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 2/7

09:50-22:45

2 stops26h 55m

Ontario

Fri 1/8

17:59-21:45

2 stops37h 46m

฿44,836

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 7/9

02:40-18:40

1 stop30h 00m

฿16,004

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 19/9

17:50-17:05

1 stop37h 15m

฿16,068

BangkokOntario

DMK - ONT

DMKONT

Bangkok Don Mueang Intl

Sun 21/9

02:40-23:40

2 stops35h 00m

฿17,364

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 18/9

22:50-17:05

2 stops56h 15m

฿17,656

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 14 results

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 28 hours 35 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

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

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

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

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

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

STARLUX Airlines

9.1

Wonderful

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Japan Airlines

8.3

Very Good

1,490 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

China Airlines

8.3

Very Good

738 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

เดลต้า

8.0

Very Good

7,956 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Qatar Airways

7.4

Good

3,584 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 5 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

Browse thousands of different options on Cheapflights for your next trip

Search flights to Ontario by cabin class

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

฿16,004+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 14 June 2025.

Return from

One-way from

Popular in

Cheapest in

Average price

Find flight deals to Ontario

Cheapest flights to OntarioExplore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 14 June 2025.

Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 14 June 2025.

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 14 June 2025.

Use the filters below to find and compare flights to Ontario that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight to Ontario

How long is the flight to Ontario?

What are the most popular airlines that fly to Ontario?

What are the cheapest airlines that fly to Ontario?

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

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.

FAQs about flying to Ontario

What airport do you fly into for flights to Ontario?

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

What is the best airline to fly to Ontario?

Where does the fastest flight to Ontario depart from?

Does Ontario have rental cars?

Are there hotels close to Ontario?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Ontario by cabin class

Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Ontario?

Why should you use Cheapflights to find cheap flight tickets to Ontario?

Can Cheapflights find flights to Ontario with no change fees?

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

100% Free

Book with Flexibility

Travel Smart

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 14 June 2025.