฿4,920+ 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 8/4. 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
17 Feb — 24 Feb1
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 18 January 2026.

Cheapest airline

EVA Air

Good one-way deal

฿4,188 or less
On average, EVA Air currently has the cheapest one-way flight from Ontario (avg. price of ฿26,514).
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Price to beat on a one-way flight from Ontario.
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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 18 January 2026.

Tue 17/321:55
ONT
-
MYR
1 stop9h 10m
เซาท์เวสต์แอร์ไลน์
Tue 24/315:40
MYR
-
ONT
1 stop9h 00m
เซาท์เวสต์แอร์ไลน์
Deal found 16/1฿12,316
Fri 20/305:00
ONT
-
MYR
1 stop11h 30m
เซาท์เวสต์แอร์ไลน์
Tue 24/315:40
MYR
-
ONT
1 stop9h 00m
เซาท์เวสต์แอร์ไลน์
Deal found 16/1฿12,943
Wed 3/606:30
ONT
-
MYR
2 stops11h 05m
เซาท์เวสต์แอร์ไลน์
Tue 9/607:00
MYR
-
ONT
1 stop8h 40m
เซาท์เวสต์แอร์ไลน์
Deal found 16/1฿14,165
Wed 8/422:25
ONT
-
MYR
1 stop8h 08m
เดลต้า
Sun 12/414:16
MYR
-
ONT
1 stop9h 44m
เดลต้า
Deal found 17/1฿15,983
Mon 13/422:15
ONT
-
MYR
2 stops10h 40m
เดลต้า
Thu 16/417:14
MYR
-
ONT
2 stops9h 30m
เดลต้า
Deal found 17/1฿16,516
Sun 21/605:55
ONT
-
MYR
1 stop8h 10m
เซาท์เวสต์แอร์ไลน์
Sat 27/606:35
MYR
-
ONT
1 stop10h 45m
เซาท์เวสต์แอร์ไลน์
Deal found 16/1฿16,892
Mon 2/306:00
ONT
-
HKT
2 stops25h 10m
เดลต้า
Mon 6/423:25
HKT
-
ONT
2 stops37h 09m
เดลต้า
Deal found 16/1฿22,282
Tue 24/306:00
ONT
-
HKT
2 stops26h 10m
Korean Air
Tue 31/323:25
HKT
-
ONT
2 stops31h 48m
Korean Air
Deal found 17/1฿22,439
Sun 1/313:10
ONT
-
HKT
2 stops42h 00m
เดลต้า
Wed 18/323:40
HKT
-
ONT
2 stops36h 54m
เดลต้า
Deal found 18/1฿22,470
Tue 3/306:10
ONT
-
BKK
2 stops32h 00m
United Airlines
Tue 10/307:10
BKK
-
ONT
2 stops24h 31m
United Airlines
Deal found 17/1฿22,533
Thu 19/306:15
ONT
-
BKK
2 stops39h 10m
United Airlines
Thu 23/409:35
BKK
-
ONT
2 stops27h 10m
United Airlines
Deal found 17/1฿22,689
Sun 1/206:00
ONT
-
BKK
2 stops32h 10m
United Airlines
Sat 7/209:10
BKK
-
ONT
2 stops47h 33m
United Airlines
Deal found 16/1฿22,721

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 18 January 2026. 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 17/3

21:55-10:05

1 stop9h 10m

Myrtle Beach Intl

Tue 24/3

15:40-21:40

1 stop9h 00m

฿12,316

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Fri 20/3

05:00-19:30

1 stop11h 30m

Myrtle Beach Intl

Tue 24/3

15:40-21:40

1 stop9h 00m

฿12,943

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 3/6

06:30-20:35

2 stops11h 05m

Myrtle Beach Intl

Tue 9/6

07:00-12:40

1 stop8h 40m

฿14,165

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 8/4

22:25-09:33

1 stop8h 08m

Myrtle Beach Intl

Sun 12/4

14:16-21:00

1 stop9h 44m

฿15,983

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sun 21/6

05:55-17:05

1 stop8h 10m

Myrtle Beach Intl

Sat 27/6

06:35-14:20

1 stop10h 45m

฿16,892

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Wed 22/4

07:30-22:10

2 stops24h 40m

Phuket City

Sun 3/5

23:25-22:37

2 stops37h 12m

฿22,282

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Mon 2/3

06:00-22:10

2 stops25h 10m

Phuket City

Mon 6/4

23:25-22:34

2 stops37h 09m

฿22,282

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Mon 20/4

07:30-22:10

2 stops24h 40m

Phuket City

Sun 3/5

23:25-17:15

2 stops31h 50m

฿22,282

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Sat 25/4

07:30-22:10

2 stops24h 40m

Phuket City

Sun 3/5

23:25-22:37

2 stops37h 12m

฿22,439

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Sun 1/3

13:10-22:10

2 stops42h 00m

Phuket City

Wed 18/3

23:40-22:34

2 stops36h 54m

฿22,470

Flights are sorted by cheapest return flights first.

Deals found on 18/1

Showing 1-10 of 60 results
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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 16 January 2026.

Booking 83 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, January is the cheapest month in which you can book a flight from Ontario (average of ฿16,014). Flying from Ontario in June will prove the most costly (average of ฿24,476). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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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 18 January 2026.

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

    The most selected flight destinations from Ontario for the current month are Guadalajara, Dallas/Fort Worth Airport, Honolulu. 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 ฿4,188 to Phoenix Sky Harbor Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿9,545 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 January; 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 ฿19,148

  • 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!

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