$86+ Cheap flights from Ontario

ONT — SYD
19 Nov — 26 Nov1
1 adult
1 adult, Economy, 0 bags

Find flights from Ontario within your budget

 

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Route

Depart

Return

Price

Cheapest return flight

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Wed 18/11

17:56-23:36

1 stop5h 40m

Portland

Wed 31/12

00:00-00:00

Nonstop0h 00m

$126

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Wed 9/12

06:50-13:10

1 stop6h 20m

Portland

Wed 31/12

00:00-00:00

Nonstop0h 00m

$126

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Thu 26/11

13:15-19:38

1 stop6h 23m

Portland

Wed 31/12

00:00-00:00

Nonstop0h 00m

$140

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Mon 26/10

18:55-01:25

1 stop6h 30m

Portland

Wed 31/12

00:00-00:00

Nonstop0h 00m

$140

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Thu 26/11

11:45-14:55

Nonstop2h 10m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$150

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Fri 6/11

18:50-23:55

1 stop5h 05m

San Jose

Wed 31/12

00:00-00:00

Nonstop0h 00m

$152

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Tue 17/11

05:45-11:10

1 stop5h 25m

San Jose

Wed 31/12

00:00-00:00

Nonstop0h 00m

$152

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Sun 15/11

05:55-09:15

1 stop3h 20m

Las Vegas Harry Reid Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$165

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Fri 27/11

16:25-23:35

1 stop6h 10m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$165

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Fri 18/12

18:30-00:25

1 stop4h 55m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$181

Flights are sorted by cheapest return flights first.

Deals found on 15/10

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

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 (159 flights per day), Seattle (115 flights per day) and Atlanta (73 flights per day).

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $138
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $143
Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $300
Oakland
Oakland
From $571

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 $138. Explore other affordable destinations below.

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $138
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $143
Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $300
Houston Hobby
Houston Hobby
From $493

Browse thousands of different options on Cheapflights for your next trip

Related info for your journey

  • 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, Denver. Las Vegas, Dallas/Fort Worth Airport, Guadalajara 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 $138 to Seattle (prices may vary depending on the airline and departure time). On average, users have booked flights for $384 to fly from Ontario.

  • What is the cheapest premium economy flight from Ontario?

    Options for some of the cheapest premium economy flights from Ontario we have found on Cheapflights are as follows:
    Fly from Ontario to Phoenix Sky Harbor Intl Airport starting at $2,259

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

    View the cheapest flight destinations from Ontario:
    Fly from Ontario to Sydney from $1,539 round trip
    Fly from Ontario to Melbourne from $1,616 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

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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