Thailand (ภาษาไทย)
ภาษาไทย

฿4,019+ Cheap flights from Ontario

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — BKK
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 4 December 2025.

Cheapest one-way flight

฿7,842

Cheapest airline

EVA Air

Most popular destination

Taipei City Taiwan Taoyuan Intl (TPE)

Good one-way deal

฿4,262 or less
The cheapest one-way flight from Ontario is currently to Incheon Intl.
Search Deals
On average, EVA Air currently has the cheapest one-way flight from Ontario (avg. price of ฿27,320).
Search Deals
Taipei City Taiwan Taoyuan Intl (TPE) is currently the most popular flight destination from Ontario (average return price of ฿14,851).
Search Deals
Price to beat on a one-way flight from Ontario.
Search Deals

Find flights from Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 4 December 2025.

Tue 6/117:45ONT - MYR
2 stops13h 30mเซาท์เวสต์แอร์ไลน์
Tue 13/108:15MYR - ONT
2 stops9h 30mเซาท์เวสต์แอร์ไลน์
Deal found 3/12฿7,496
Tue 10/207:30ONT - MYR
2 stops23h 16mเดลต้า
Sun 15/206:00MYR - ONT
1 stop9h 02mเดลต้า
Deal found 1/12฿10,175
Thu 25/1211:15ONT - MYR
1 stop8h 35mเดลต้า
Wed 31/1206:00MYR - ONT
1 stop7h 00mเดลต้า
Deal found 1/12฿11,451
Wed 4/322:20ONT - MYR
1 stop8h 25mเดลต้า
Sun 8/306:00MYR - ONT
1 stop8h 35mเดลต้า
Deal found 3/12฿11,865
Thu 12/222:20ONT - MYR
1 stop8h 25mเดลต้า
Sun 15/206:00MYR - ONT
1 stop9h 02mเดลต้า
Deal found 1/12฿12,822
Wed 4/315:15ONT - MYR
2 stops15h 45mเซาท์เวสต์แอร์ไลน์
Sun 8/317:45MYR - ONT
2 stops9h 25mเซาท์เวสต์แอร์ไลน์
Deal found 1/12฿12,886
Wed 11/307:05ONT - MYR
2 stops11h 05mเซาท์เวสต์แอร์ไลน์
Wed 18/315:40MYR - ONT
1 stop9h 00mเซาท์เวสต์แอร์ไลน์
Deal found 3/12฿12,982
Wed 22/421:55ONT - MYR
1 stop9h 10mเซาท์เวสต์แอร์ไลน์
Wed 6/516:05MYR - ONT
1 stop7h 30mเซาท์เวสต์แอร์ไลน์
Deal found 3/12฿14,258
Sun 18/107:30ONT - CNX
2 stops24h 25mเดลต้า
Sat 14/200:15CNX - ONT
2 stops36h 29mเดลต้า
Deal found 3/12฿22,008
Mon 16/306:00ONT - CNX
2 stops26h 55mKorean Air
Wed 18/300:15CNX - ONT
2 stops36h 19mKorean Air
Deal found 2/12฿22,168
Mon 16/306:00ONT - CNX
2 stops26h 55mเดลต้า
Wed 18/300:15CNX - ONT
2 stops36h 19mเดลต้า
Deal found 1/12฿22,646
Mon 9/306:00ONT - CNX
2 stops26h 55mKorean Air
Wed 11/300:15CNX - ONT
2 stops36h 18mKorean Air
Deal found 3/12฿22,806

Find flights from Ontario within your budget

 
Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 4 December 2025. In the last 7 days, Cheapflights users made a total of 17,341 searches

Fly to

Suvarnabhumi

Route

Depart

Return

Price

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Tue 6/1

17:45-10:15

2 stops13h 30m

Myrtle Beach Intl

Tue 13/1

08:15-14:45

2 stops9h 30m

฿7,496

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Tue 10/2

07:30-09:46

2 stops23h 16m

Myrtle Beach Intl

Sun 15/2

06:00-12:02

1 stop9h 02m

฿10,175

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 11/2

12:41-23:41

1 stop8h 00m

Myrtle Beach Intl

Sun 15/2

06:00-12:02

1 stop9h 02m

฿10,430

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Thu 25/12

11:15-20:17

1 stop6h 02m

Myrtle Beach Intl

Thu 1/1

06:00-10:00

1 stop7h 00m

฿11,451

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Thu 25/12

06:00-20:17

2 stops11h 17m

Myrtle Beach Intl

Wed 31/12

06:00-10:00

1 stop7h 00m

฿12,567

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Thu 12/2

22:20-09:45

1 stop8h 25m

Myrtle Beach Intl

Sun 15/2

06:00-12:02

1 stop9h 02m

฿12,822

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 11/3

22:30-09:38

1 stop8h 08m

Myrtle Beach Intl

Wed 18/3

14:19-21:04

1 stop9h 45m

฿12,822

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 4/3

15:15-10:00

2 stops15h 45m

Myrtle Beach Intl

Sun 8/3

10:25-20:40

1 stop13h 15m

฿12,886

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 11/3

07:05-21:10

2 stops11h 05m

Myrtle Beach Intl

Wed 18/3

15:40-21:40

1 stop9h 00m

฿12,982

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 19/1

06:00-22:55

2 stops25h 55m

Chiang Mai

Sat 14/2

00:15-21:44

2 stops36h 29m

฿22,008

Flights are sorted by cheapest return flights first.

Deals found on 2/12

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Ontario

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

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Ontario?

Use this chart to determine the optimal time to book a return flight from Ontario to Suvarnabhumi. Price data was last updated on 28 November 2025.

Booking 17 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario?

Currently, November is the cheapest month in which you can book a flight from Ontario (average of ฿18,819). Flying from Ontario in June will prove the most costly (average of ฿25,071). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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.

Direct flights from California

Book a direct flight from one of these other cities located in California.
Direct flights from Los Angeles
Direct flights from San Francisco
Direct flights from San Diego
Direct flights from Fresno
Direct flights from San Jose

Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 4 December 2025.

  • What are the most popular destinations to fly to from Ontario?

    The most selected flight destinations from Ontario for the current month are Dallas/Fort Worth Airport, Denver, Guadalajara. While Dallas/Fort Worth Airport, Denver, Guadalajara are the top choices made by travellers year-round.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as ฿4,262 to Phoenix Sky Harbor Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿9,715 to fly from Ontario.

  • What is the cheapest month to fly from Ontario?

    At the present moment the cheapest month to fly from Ontario is currently November; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Ontario?

    Here are some of the cheapest flight destinations from Ontario:
    Fly from Ontario to Bangkok from ฿20,796

  • How does Cheapflights help users find flights from Ontario?

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

    Cheapflights simply makes it quick and affordable to book flights from Ontario by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

  • Can Cheapflights find flights from Ontario with no change fees?

    Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario, users can toggle the no change fees filter when performing a flight search.

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

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

See more FAQs

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 from Ontario?

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

Cheapflights simply makes it quick and affordable to book flights from Ontario by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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.