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$173+ 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 2/6. 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
3 May — 10 May1
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 3 April 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 - PDX

ONTPDX

Ontario

Sat 2/5

07:00-09:24

Nonstop2h 24m

Portland

Mon 4/5

21:30-23:48

Nonstop2h 18m

$327

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Fri 8/5

07:00-09:24

Nonstop2h 24m

Portland

Wed 13/5

08:00-10:21

Nonstop2h 21m

$379

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 21/5

16:57-23:44

1 stop6h 47m

Portland

Sun 24/5

05:30-12:35

1 stop7h 05m

$453

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Fri 22/5

13:35-21:18

1 stop7h 43m

Portland

Sat 23/5

17:01-22:45

1 stop5h 44m

$453

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Fri 29/5

15:55-22:35

1 stop6h 40m

Portland

Tue 2/6

05:30-11:55

2 stops6h 25m

$462

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sun 19/7

17:16-00:23

1 stop6h 07m

Bozeman Gallatin Field

Tue 21/7

12:13-16:35

1 stop5h 22m

$474

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 17/4

17:05-00:09

1 stop6h 04m

Bozeman Gallatin Field

Tue 21/4

18:34-23:44

1 stop6h 10m

$474

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 24/8

13:00-18:38

1 stop4h 38m

Bozeman Gallatin Field

Mon 31/8

05:45-09:01

1 stop4h 16m

$474

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 8/6

17:24-00:23

1 stop5h 59m

Bozeman Gallatin Field

Mon 15/6

19:30-23:45

1 stop5h 15m

$474

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 28/4

15:30-00:15

2 stops7h 45m

Bozeman Gallatin Field

Thu 30/4

16:20-22:40

1 stop7h 20m

$483

Flights are sorted by cheapest return flights first.

Deals found on 30/3

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 is the cheapest month to book a flight from Ontario?

Currently, October is the cheapest month in which you can book a flight from Ontario (average of $659). Flying from Ontario in June will prove the most costly (average of $1,138). 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?

Some of the most frequent flights departing from Ontario everyday are: Seattle (92 flights per day), Dallas (85 flights per day), and Atlanta (67 flights per day).

Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $202
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $482

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 $202. Explore other affordable destinations below.

Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $202
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $482

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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 3 April 2026.

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

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

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as $202 to Phoenix Sky Harbor Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for $343 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 October; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • 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!

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