Find flights
Deals

$146+ Cheap flights from Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/9. 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 — AKL
14 Sep — 21 Sep1
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 15 August 2026. In the last 7 days, Cheapflights users made a total of 134,765 searches

Fly to

Route

Departure

Return

Price

Cheapest return flight

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Mon 12/10

18:55-01:20

1 stop6h 25m

Portland

Tue 13/10

17:30-21:15

1 stop3h 45m

$447

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Fri 23/10

13:24-18:12

1 stop4h 48m

Portland

Sun 25/10

15:31-22:43

1 stop7h 12m

$457

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Fri 18/9

16:00-21:50

1 stop5h 50m

Portland

Mon 21/9

05:00-13:25

2 stops8h 25m

$485

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Thu 1/10

19:05-23:45

1 stop4h 40m

Portland

Fri 2/10

05:30-14:00

2 stops8h 30m

$485

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Sat 5/9

13:18-21:05

1 stop7h 47m

Portland

Sun 6/9

05:30-12:12

1 stop6h 42m

$519

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Sat 29/8

10:15-17:40

2 stops7h 25m

Portland

Mon 31/8

05:00-13:25

2 stops8h 25m

$539

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Tue 1/12

07:30-09:44

Nonstop2h 14m

Portland

Tue 1/12

10:47-17:42

1 stop6h 55m

$542
Fastest return journey

OntarioGreat Falls

ONT Ontario - GTF Great Falls

ONTGTF

Ontario

Tue 22/9

17:15-22:37

1 stop4h 22m

Great Falls

Sat 3/10

13:15-16:35

1 stop4h 20m

$568

OntarioGreat Falls

ONT Ontario - GTF Great Falls

ONTGTF

Ontario

Fri 25/9

17:15-22:37

1 stop4h 22m

Great Falls

Sat 3/10

13:15-16:35

1 stop4h 20m

$568

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Wed 4/11

15:20-21:25

2 stops6h 05m

Portland

Mon 9/11

15:35-23:35

2 stops8h 00m

$568

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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?

Some of the most frequent flights departing from Ontario everyday are: Dallas (131 flights per day), Seattle (105 flights per day), and Denver (70 flights per day).

Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $197
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $469

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Phoenix Sky Harbor Intl, with prices starting at $197. Explore other affordable destinations below.

Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $197
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $469

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Direct flights from California

Book a direct flight from one of these other cities located in California.
Direct flights from Los Angeles
Direct flights from San Francisco
Direct flights from San Diego
Direct flights from San Jose
Direct flights from Palm Springs

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 15 August 2026.

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

    The most popular destinations from Ontario this month are Las Vegas, Denver, Dallas/Fort Worth Airport. The top year-round destinations include Las Vegas, Dallas/Fort Worth Airport, Guadalajara.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as $197 to Phoenix Sky Harbor Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for $334 to fly from Ontario.

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

    Here are some of the cheapest flight destinations from Ontario:
    Fly from Ontario to Auckland from $1,802 round trip

  • How does Cheapflights help users find flights from Ontario?

    When you search for this flight from Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

  • Why should you use Cheapflights to find cheap flight tickets from Ontario?

    Millions of users choose and trust Cheapflights to book the best flight deals from Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

  • 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?

When you search for this flight from Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.