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$170+ 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 25/7. 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 — SYD
27 Jul — 3 Aug1
1 adult
1 adult, Economy, 0 bags

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 27 June 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Thu 10/9

07:00-18:25

1 stop8h 25m

New York LaGuardia

Sat 12/9

13:25-20:53

2 stops10h 28m

$460

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Mon 20/7

23:51-08:13

Nonstop5h 22m

New York John F Kennedy Intl

Fri 21/8

19:30-22:38

Nonstop6h 08m

$525

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 14/10

12:25-23:25

1 stop8h 00m

New York LaGuardia

Thu 22/10

07:15-14:10

2 stops9h 55m

$539

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Fri 21/8

23:59-08:20

Nonstop5h 21m

New York John F Kennedy Intl

Mon 24/8

19:30-22:38

Nonstop6h 08m

$539

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 14/7

23:51-08:13

Nonstop5h 22m

New York John F Kennedy Intl

Fri 21/8

19:30-22:38

Nonstop6h 08m

$554

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 22/7

05:15-17:00

2 stops8h 45m

New York LaGuardia

Wed 29/7

06:55-12:40

1 stop8h 45m

$561

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 15/9

06:00-21:40

2 stops12h 40m

New York LaGuardia

Tue 22/9

17:25-22:59

1 stop8h 34m

$562

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Sun 19/7

23:58-08:20

Nonstop5h 22m

New York John F Kennedy Intl

Wed 19/8

19:29-22:37

Nonstop6h 08m

$583
Fastest return journey

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 14/7

23:51-08:13

Nonstop5h 22m

New York John F Kennedy Intl

Wed 22/7

19:29-22:35

Nonstop6h 06m

$590

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Sat 19/9

07:12-19:27

1 stop9h 15m

New York John F Kennedy Intl

Mon 28/9

09:55-17:18

1 stop10h 23m

$605

Flights are sorted by cheapest return flights first.

Deals found on 26/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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.

What are popular destinations to fly to from Ontario?

Ontario offers frequent flights to Dallas (131 flights per day), Seattle (104 flights per day) and Atlanta (81 flights per day).

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $144
Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From $331
Oakland
Oakland
From $578

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at $144. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $144
Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From $331
Oakland
Oakland
From $578

Browse thousands of different options on Cheapflights for your next trip

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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 27 June 2026.

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

    For the current month, the most popular flights from Ontario are Las Vegas, Guadalajara, Dallas/Fort Worth Airport. Las Vegas, Dallas/Fort Worth Airport, Denver are the most popular locations from Ontario year round.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as $144 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for $385 to fly from Ontario.

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

    View the cheapest flight destinations from Ontario:
    Fly from Ontario to Sydney from $1,470 round trip
    Fly from Ontario to Melbourne from $1,534 round trip

  • 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?

    It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario.

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

    Certainly. Search results for flights from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

    Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from Ontario today and book when you’re ready!

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?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario.

Can Cheapflights find flights from Ontario with no change fees?

Certainly. Search results for flights from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from Ontario today and book when you’re ready!

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