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฿2,340+ 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 12/11. 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
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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 17 October 2025.

Cheapest one-way flight

฿1,348

Cheapest airline

EVA Air

Most popular destination

Vancouver Intl (YVR)

Good round-trip deal

฿38,278 or less

Good one-way deal

฿4,344 or less
The cheapest one-way flight from Ontario is currently to Vancouver Intl.
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On average, EVA Air currently has the cheapest one-way flight from Ontario (avg. price of ฿28,050).
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Vancouver Intl (YVR) is currently the most popular flight destination from Ontario (average return price of ฿2,404).
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Price to beat on a round-trip flight from Ontario.
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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 17 October 2025.

Thu 6/1111:36ONT - MYR
1 stop9h 21mเดลต้า
Mon 10/1118:50MYR - ONT
1 stop7h 14mเดลต้า
Deal found 15/10฿11,669
Sat 8/1111:36ONT - MYR
1 stop9h 21mเดลต้า
Sat 15/1116:00MYR - ONT
1 stop9h 06mเดลต้า
Deal found 17/10฿14,302
Tue 7/422:30ONT - MYR
1 stop8h 38mเดลต้า
Wed 8/414:15MYR - ONT
1 stop9h 59mเดลต้า
Deal found 15/10฿14,530
Mon 9/305:00ONT - MYR
1 stop5h 55mเซาท์เวสต์แอร์ไลน์
Fri 13/310:35MYR - ONT
2 stops10h 10mเซาท์เวสต์แอร์ไลน์
Deal found 15/10฿16,512
Sat 20/1209:50ONT - MYR
1 stop9h 00mเซาท์เวสต์แอร์ไลน์
Mon 29/1212:40MYR - ONT
2 stops12h 40mเซาท์เวสต์แอร์ไลน์
Deal found 16/10฿17,032
Sat 1/1111:36ONT - MYR
1 stop9h 21mเดลต้า
Wed 5/1114:35MYR - ONT
1 stop7h 44mเดลต้า
Deal found 17/10฿17,780
Mon 9/306:45ONT - CNX
2 stops26h 10mKorean Air
Wed 11/300:15CNX - ONT
2 stops36h 23mKorean Air
Deal found 16/10฿23,208
Mon 3/1122:50ONT - BKK
1 stop23h 15mChina Airlines
Fri 7/1117:50BKK - ONT
1 stop38h 00mChina Airlines
Deal found 15/10฿24,183
Tue 3/222:50ONT - BKK
1 stop23h 15mChina Airlines
Thu 5/217:50BKK - ONT
1 stop38h 00mChina Airlines
Deal found 15/10฿24,216
Tue 25/1122:50ONT - BKK
1 stop35h 45mChina Airlines
Wed 10/1214:05BKK - ONT
1 stop17h 45mChina Airlines
Deal found 16/10฿24,248
Wed 7/122:50ONT - BKK
1 stop20h 00mChina Airlines
Tue 20/102:35BKK - ONT
1 stop29h 15mChina Airlines
Deal found 16/10฿24,313
Thu 13/1122:50ONT - BKK
1 stop20h 00mChina Airlines
Thu 27/1110:55BKK - ONT
1 stop20h 55mChina Airlines
Deal found 17/10฿24,346

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 17 October 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

Thu 6/11

11:36-23:57

1 stop9h 21m

Myrtle Beach Intl

Mon 10/11

18:50-23:04

1 stop7h 14m

฿11,669

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sat 8/11

11:36-23:57

1 stop9h 21m

Myrtle Beach Intl

Sat 15/11

16:00-22:06

1 stop9h 06m

฿14,302

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Tue 7/4

22:30-10:08

1 stop8h 38m

Myrtle Beach Intl

Wed 8/4

14:15-21:14

1 stop9h 59m

฿14,530

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Mon 9/3

05:00-13:55

1 stop5h 55m

Myrtle Beach Intl

Fri 13/3

10:35-17:45

2 stops10h 10m

฿16,512

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sat 20/12

09:50-21:50

1 stop9h 00m

Myrtle Beach Intl

Mon 29/12

12:40-22:20

2 stops12h 40m

฿17,032

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 9/3

06:45-22:55

2 stops26h 10m

Chiang Mai

Wed 11/3

00:15-22:38

2 stops36h 23m

฿23,208

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/11

06:00-11:25

2 stops38h 25m

Bangkok Suvarnabhumi

Thu 13/11

16:55-22:51

2 stops20h 56m

฿24,378

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 25/11

06:00-11:25

2 stops38h 25m

Bangkok Suvarnabhumi

Wed 10/12

16:55-12:18

2 stops34h 23m

฿24,378

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/11

06:00-11:25

2 stops38h 25m

Bangkok Suvarnabhumi

Fri 14/11

16:55-22:51

2 stops20h 56m

฿24,378

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 1/3

18:37-11:25

2 stops25h 48m

Bangkok Suvarnabhumi

Sun 15/3

16:55-12:17

2 stops33h 22m

฿24,378

Flights are sorted by cheapest return flights first.

Deals found on 15/10

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 10 October 2025.

Booking 46 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 ฿19,275). Flying from Ontario in June will prove the most costly (average of ฿25,581). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from Ontario?

If you’re flying from Ontario, these routes are more frequently taken by airlines Dallas (128 flights per day), Seattle (115 flights per day) and Atlanta (94 flights per day).

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From ฿38,278

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Seattle/Tacoma Intl, with prices starting at ฿38,278. Explore other affordable destinations below.

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From ฿38,278

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Direct flights from California

Book a direct flight from one of these other cities located in California.
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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 17 October 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 ฿4,343 to Phoenix Sky Harbor Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿19,359 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 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 ฿23,013

  • 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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