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฿2,489+ 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 13/9. 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
21 Aug — 28 Aug1
1 adult

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 16 August 2025.

Cheapest airline

EVA Air
On average, EVA Air currently has the cheapest one-way flight from Ontario (avg. price of ฿28,231).
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Find flights from Ontario

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 16 August 2025.

Wed 22/1022:00ONT - MYR
1 stop8h 51mเดลต้า
Wed 29/1011:29MYR - ONT
2 stops14h 12mเดลต้า
Deal found 16/8฿10,410
Sat 18/1011:36ONT - MYR
1 stop9h 23mเดลต้า
Sat 25/1006:00MYR - ONT
1 stop7h 26mเดลต้า
Deal found 14/8฿10,507
Mon 22/922:00ONT - MYR
1 stop9h 10mเดลต้า
Wed 24/914:20MYR - ONT
1 stop7h 55mเดลต้า
Deal found 16/8฿10,539
Tue 28/1017:50ONT - MYR
2 stops13h 44mเดลต้า
Sun 2/1105:00MYR - ONT
1 stop7h 26mเดลต้า
Deal found 14/8฿10,668
Mon 22/922:00ONT - MYR
1 stop9h 10mเดลต้า
Thu 25/918:55MYR - ONT
1 stop6h 28mเดลต้า
Deal found 16/8฿10,830
Mon 27/1006:35ONT - MYR
1 stop9h 55mเซาท์เวสต์แอร์ไลน์
Thu 30/1006:55MYR - ONT
2 stops10h 20mเซาท์เวสต์แอร์ไลน์
Deal found 15/8฿11,185
Sun 21/922:00ONT - MYR
1 stop9h 10mเดลต้า
Wed 24/918:55MYR - ONT
1 stop6h 28mเดลต้า
Deal found 16/8฿12,026
Fri 10/1022:00ONT - MYR
1 stop8h 51mเดลต้า
Tue 14/1006:00MYR - ONT
2 stops9h 14mเดลต้า
Deal found 16/8฿12,188
Mon 24/1112:00ONT - MYR
1 stop8h 36mเดลต้า
Wed 3/1218:45MYR - ONT
1 stop6h 56mเดลต้า
Deal found 15/8฿12,317
Mon 1/906:00ONT - BKK
2 stops27h 25mKorean Air
Sun 14/923:30BKK - ONT
2 stops31h 30mKorean Air
Deal found 15/8฿23,341
Thu 23/1006:37ONT - BKK
2 stops25h 08mKorean Air
Sat 15/1123:15BKK - ONT
2 stops33h 02mKorean Air
Deal found 15/8฿23,535
Thu 18/906:00ONT - BKK
2 stops25h 45mKorean Air
Thu 2/1002:35BKK - ONT
2 stops28h 25mKorean Air
Deal found 14/8฿23,664

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 16 August 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

Wed 22/10

22:00-09:51

1 stop8h 51m

Myrtle Beach Intl

Wed 29/10

11:29-22:41

2 stops14h 12m

฿10,410

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sat 18/10

11:36-23:59

1 stop9h 23m

Myrtle Beach Intl

Sat 25/10

06:00-10:26

1 stop7h 26m

฿10,507

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Mon 22/9

22:00-10:10

1 stop9h 10m

Myrtle Beach Intl

Wed 24/9

14:20-19:15

1 stop7h 55m

฿10,539

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Tue 28/10

17:50-10:34

2 stops13h 44m

Myrtle Beach Intl

Sun 2/11

05:00-09:26

1 stop7h 26m

฿10,668

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Mon 22/9

22:00-10:10

1 stop9h 10m

Myrtle Beach Intl

Thu 25/9

18:55-22:23

1 stop6h 28m

฿10,830

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Mon 27/10

06:35-19:30

1 stop9h 55m

Myrtle Beach Intl

Thu 30/10

06:55-14:15

2 stops10h 20m

฿11,185

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sun 21/9

22:00-10:10

1 stop9h 10m

Myrtle Beach Intl

Wed 24/9

18:55-22:23

1 stop6h 28m

฿12,026

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Wed 19/11

12:00-23:36

1 stop8h 36m

Myrtle Beach Intl

Sun 23/11

18:45-22:41

1 stop6h 56m

฿12,026

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Fri 10/10

22:00-09:51

1 stop8h 51m

Myrtle Beach Intl

Tue 14/10

06:00-12:14

2 stops9h 14m

฿12,188

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 21/10

06:37-21:45

2 stops25h 08m

Bangkok Suvarnabhumi

Mon 3/11

09:40-17:10

2 stops22h 30m

฿25,151

Flights are sorted by cheapest return flights first.

Deals found on 15/8

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 8 August 2025.

Booking 42 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, September is the cheapest month in which you can book a flight from Ontario (average of ฿19,914). Flying from Ontario in June will prove the most costly (average of ฿25,474). 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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Direct flights from California

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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 16 August 2025.

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

    The most selected flight destinations from Ontario for the current month are Denver, 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 premium economy flight from Ontario?

    If you're looking for an elevated level of comfort for your next adventure, premium economy flights from Ontario may suit your needs. The cheapest premium economy flights from Ontario are:
    Fly Ontario to Taipei City Taiwan Taoyuan Intl Airport from ฿64,856

  • What is the cheapest month to fly from Ontario?

    At the present moment the cheapest month to fly from Ontario is currently September; 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 ฿23,341

  • 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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