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฿3,297+ 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 10/12. 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
13 Dec — 20 Dec1
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 13 November 2025.

Cheapest one-way flight

฿14,778

Cheapest airline

EVA Air

Most popular destination

Taipei City Taiwan Taoyuan Intl (TPE)

Good round-trip deal

฿38,063 or less

Good one-way deal

฿4,319 or less
The cheapest one-way flight from Ontario is currently to Taipei City Taiwan Taoyuan Intl.
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On average, EVA Air currently has the cheapest one-way flight from Ontario (avg. price of ฿27,875).
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Taipei City Taiwan Taoyuan Intl (TPE) is currently the most popular flight destination from Ontario (average return price of ฿15,049).
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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 13 November 2025.

Tue 7/422:30ONT - MYR
1 stop8h 38mเดลต้า
Wed 8/414:15MYR - ONT
1 stop9h 59mเดลต้า
Deal found 12/11฿11,862
Sat 13/1212:12ONT - MYR
1 stop8h 31mเดลต้า
Tue 23/1206:00MYR - ONT
1 stop7h 00mเดลต้า
Deal found 13/11฿13,316
Sun 14/1207:05ONT - MYR
1 stop7h 56mเดลต้า
Tue 23/1206:00MYR - ONT
1 stop7h 00mเดลต้า
Deal found 13/11฿14,448
Sun 7/1206:50ONT - MYR
1 stop9h 40mเซาท์เวสต์แอร์ไลน์
Sun 14/1212:40MYR - ONT
2 stops12h 25mเซาท์เวสต์แอร์ไลน์
Deal found 13/11฿15,773
Sun 28/1222:29ONT - MYR
1 stop8h 55mเดลต้า
Fri 2/118:59MYR - ONT
1 stop7h 24mเดลต้า
Deal found 13/11฿16,128
Sat 29/1106:00ONT - MYR
2 stops8h 55mเดลต้า
Wed 3/1211:29MYR - ONT
2 stops14h 35mเดลต้า
Deal found 13/11฿19,813
Mon 23/218:37ONT - MYR
2 stops14h 42mUnited Airlines
Mon 9/318:04MYR - ONT
2 stops21h 39mUnited Airlines
Deal found 12/11฿20,169
Sat 6/1218:41ONT - MYR
2 stops14h 54mUnited Airlines
Wed 10/1213:16MYR - ONT
2 stops34h 26mUnited Airlines
Deal found 12/11฿21,655
Mon 9/306:00ONT - CNX
2 stops26h 55mเดลต้า
Wed 11/300:15CNX - ONT
2 stops36h 23mเดลต้า
Deal found 11/11฿22,916
Thu 26/218:37ONT - MYR
2 stops14h 42mUnited Airlines
Sat 28/212:26MYR - ONT
2 stops12h 33mUnited Airlines
Deal found 12/11฿23,142
Tue 3/222:50ONT - BKK
1 stop26h 55mChina Airlines
Mon 16/210:55BKK - ONT
1 stop20h 55mChina Airlines
Deal found 12/11฿23,692
Thu 27/1122:50ONT - BKK
1 stop20h 00mChina Airlines
Wed 10/1202:35BKK - ONT
1 stop29h 15mChina Airlines
Deal found 12/11฿23,724

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 13 November 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 7/4

22:30-10:08

1 stop8h 38m

Myrtle Beach Intl

Wed 8/4

14:15-21:14

1 stop9h 59m

฿11,862

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sat 13/12

12:12-23:43

1 stop8h 31m

Myrtle Beach Intl

Tue 23/12

06:00-10:00

1 stop7h 00m

฿13,316

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sun 7/12

06:50-19:30

1 stop9h 40m

Myrtle Beach Intl

Sun 14/12

12:40-22:05

2 stops12h 25m

฿15,773

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sun 28/12

22:29-10:24

1 stop8h 55m

Myrtle Beach Intl

Fri 2/1

18:59-23:23

1 stop7h 24m

฿16,128

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sat 29/11

06:00-17:55

2 stops8h 55m

Myrtle Beach Intl

Wed 3/12

11:29-23:04

2 stops14h 35m

฿19,813

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Mon 23/2

18:37-12:19

2 stops14h 42m

Myrtle Beach Intl

Mon 9/3

18:04-12:43

2 stops21h 39m

฿20,169

OntarioMyrtle Beach

ONT - MYR

ONTMYR

Ontario

Sat 6/12

18:41-12:35

2 stops14h 54m

Myrtle Beach Intl

Wed 10/12

13:16-20:42

2 stops34h 26m

฿21,655

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 9/3

06:00-22:55

2 stops26h 55m

Chiang Mai

Wed 11/3

00:15-22:38

2 stops36h 23m

฿22,916

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 2/5

18:53-23:55

2 stops39h 02m

Bangkok Suvarnabhumi

Fri 8/5

07:00-12:20

2 stops43h 20m

฿23,918

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 8/4

00:10-10:20

1 stop20h 10m

Chiang Mai

Fri 1/5

11:20-18:00

1 stop20h 40m

฿23,950

Flights are sorted by cheapest return flights first.

Deals found on 12/11

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 7 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, September is the cheapest month in which you can book a flight from Ontario (average of ฿19,167). Flying from Ontario in June will prove the most costly (average of ฿25,405). 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 Seattle (94 flights per day), Dallas (93 flights per day) and Atlanta (83 flights per day).

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From ฿38,063

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 ฿38,063. Explore other affordable destinations below.

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From ฿38,063

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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 13 November 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 ฿4,319 to Phoenix Sky Harbor Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿19,250 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 ฿22,593

  • 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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