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$85+ Cheap flights from Ontario

ONT — SYD
4 Nov — 11 Nov1
1 adult
1 adult, Economy, 0 bags

Find flights from Ontario within your budget

 

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Wed 3/2

07:10-14:07

1 stop5h 57m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$128

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Tue 24/11

13:45-20:40

1 stop5h 55m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$128

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Wed 30/12

14:00-20:10

1 stop5h 10m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$128

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Mon 2/11

05:35-12:50

2 stops6h 15m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$135

OntarioDenver

ONT Ontario - DEN Denver Intl

ONTDEN

Ontario

Thu 26/11

05:50-12:40

2 stops5h 50m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

$135

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Sat 31/10

18:00-22:42

1 stop4h 42m

Portland

Wed 31/12

00:00-00:00

Nonstop0h 00m

$141

OntarioSan Jose

ONT Ontario - SJC San Jose

ONTSJC

Ontario

Wed 4/11

07:05-08:25

Nonstop1h 20m

San Jose

Wed 11/11

11:55-13:15

Nonstop1h 20m

$168

OntarioSeattle

ONT Ontario - SEA Seattle/Tacoma Intl

ONTSEA

Ontario

Tue 10/11

16:09-18:56

Nonstop2h 47m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$171

OntarioSeattle

ONT Ontario - SEA Seattle/Tacoma Intl

ONTSEA

Ontario

Fri 13/11

20:45-01:20

1 stop4h 35m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$178

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Wed 2/12

17:55-23:39

1 stop5h 44m

Portland

Wed 31/12

00:00-00:00

Nonstop0h 00m

$184

Flights are sorted by cheapest return flights first.

Deals found on 30/9

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 (64 flights per day), Seattle (59 flights per day) and Denver (54 flights per day).

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $138
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $143
Oakland
Oakland
From $572
Houston Hobby
Houston Hobby
From $495

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
Houston Hobby
Houston Hobby
From $495
Oakland
Oakland
From $572

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 $406 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 $2,265

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

    View the cheapest flight destinations from Ontario:
    Fly from Ontario to Sydney from $1,411 round trip
    Fly from Ontario to Melbourne from $1,555 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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