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$132+ 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 7/8. 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
13 Jul — 20 Jul1
1 adult

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 8 July 2025.

Cheapest one-way flight

$321

Cheapest round-trip flight

$81

Cheapest airline

Spirit Airlines

Most popular destination

Nadi (NAN)

Good one-way deal

$1,105 or less
The cheapest one-way flight from Ontario is currently to Calgary.
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The cheapest round-trip flight from Ontario is currently to Las Vegas Harry Reid Intl.
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On average, Spirit Airlines currently has the cheapest one-way flight from Ontario (avg. price of $208).
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Nadi (NAN) is currently the most popular flight destination from Ontario (average return price of $641).
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Price to beat on a one-way flight from Ontario.
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Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 8 July 2025.

Tue 12/811:00ONT - PDX
1 stop6h 00mSouthwest
Wed 13/815:35PDX - ONT
1 stop4h 40mSouthwest
Deal found 7/7$206
Sat 6/906:05ONT - PDX
1 stop6h 08mDelta
Sat 13/905:30PDX - ONT
1 stop6h 47mDelta
Deal found 7/7$251
Sat 11/1007:10ONT - PDX
Nonstop2h 20mAlaska Airlines
Wed 15/1021:30PDX - ONT
Nonstop2h 21mAlaska Airlines
Deal found 8/7$295
Thu 23/1018:36ONT - PDX
1 stop4h 09mUnited Airlines
Sun 23/1113:00PDX - ONT
1 stop4h 34mUnited Airlines
Deal found 8/7$298
Sat 23/810:06ONT - PDX
Nonstop2h 19mHawaiian Airlines
Sun 24/821:30PDX - ONT
Nonstop2h 23mHawaiian Airlines
Deal found 7/7$311
Thu 14/817:05ONT - BZN
1 stop4h 30mSouthwest
Sun 17/805:40BZN - ONT
1 stop3h 55mSouthwest
Deal found 7/7$348
Mon 15/915:06ONT - BZN
1 stop6h 32mAlaska Airlines
Tue 16/911:26BZN - ONT
1 stop8h 21mAlaska Airlines
Deal found 7/7$393
Fri 15/816:50ONT - BZN
1 stop6h 09mDelta
Sun 24/805:30BZN - ONT
1 stop4h 25mDelta
Deal found 8/7$395
Mon 25/815:04ONT - BIL
1 stop8h 07mAlaska Airlines
Tue 2/915:43BIL - ONT
1 stop18h 43mAlaska Airlines
Deal found 7/7$400
Mon 4/817:09ONT - BIL
1 stop5h 58mDelta
Mon 11/805:25BIL - ONT
1 stop4h 30mDelta
Deal found 8/7$401
Sun 10/822:05ONT - GPT
1 stop8h 39mDelta
Tue 19/806:09GPT - ONT
1 stop6h 26mDelta
Deal found 7/7$481
Tue 22/706:00ONT - BZN
1 stop7h 06mHawaiian Airlines
Sat 26/719:25BZN - ONT
1 stop5h 50mHawaiian Airlines
Deal found 8/7$499

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 8 July 2025. In the last 7 days, Cheapflights users made a total of 134,765 searches

Fly to

Auckland

Route

Departure

Return

Price

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 12/8

11:00-17:00

1 stop6h 00m

Portland

Wed 13/8

15:35-20:15

1 stop4h 40m

$206

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 6/9

06:05-12:13

1 stop6h 08m

Portland

Sat 13/9

05:30-12:17

1 stop6h 47m

$251

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 11/10

07:10-09:30

Nonstop2h 20m

Portland

Wed 15/10

21:30-23:51

Nonstop2h 21m

$295

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 23/10

18:36-22:45

1 stop4h 09m

Portland

Sun 23/11

13:00-17:34

1 stop4h 34m

$298

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 9/10

07:10-09:30

Nonstop2h 20m

Portland

Sun 12/10

07:40-10:01

Nonstop2h 21m

$328

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 14/8

17:05-22:35

1 stop4h 30m

Bozeman Gallatin Field

Sun 17/8

05:40-08:35

1 stop3h 55m

$348

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 15/9

15:06-22:38

1 stop6h 32m

Bozeman Gallatin Field

Tue 16/9

11:26-18:47

1 stop8h 21m

$393

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 15/8

16:50-23:59

1 stop6h 09m

Bozeman Gallatin Field

Sun 24/8

05:30-08:55

1 stop4h 25m

$395

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 25/8

15:04-00:11

1 stop8h 07m

Billings Logan Intl

Tue 2/9

15:43-09:26

1 stop18h 43m

$400

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 4/8

17:09-00:07

1 stop5h 58m

Billings Logan Intl

Mon 11/8

05:25-08:55

1 stop4h 30m

$401

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 58 results
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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, April is the cheapest month in which you can book a flight from Ontario (average of $548). Flying from Ontario in September will prove the most costly (average of $1,167). 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: Dallas (120 flights per day), Seattle (110 flights per day), and San Francisco (53 flights per day).

Honolulu
Honolulu
From $664

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Honolulu, with prices starting at $1,105. Explore other affordable destinations below.

Honolulu
Honolulu
From $664

Airline reviews for flights from Ontario

Get insights into the airlines that provide service from Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Ontario. In the last 7 days, Cheapflights users made a total of 134,765 searches.
Check out reviews from past customers who have flown China Airlines, Alaska Airlines, andUnited Airlines from Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very Good
744 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very Good
744 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Alaska Airlines
8.0
Very Good
10,000 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
United Airlines
7.4
Good
8,844 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
American Airlines
7.2
Good
10,000 reviews
China Airlines
8.3
Very Good
744 reviews
Check prices

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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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 8 July 2025.

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

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

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as $1,105 to Honolulu (prices may vary depending on the airline and departure time). On average, users have booked flights for $1,143 to fly from Ontario.

  • What is the cheapest first class flight from Ontario?

    If you’re looking for a cheap first-class flight from Ontario, consider Seattle. Prices start at $2,652 so you can fly first-class even on a budget.

  • What is the cheapest month to fly from Ontario?

    At the present moment the cheapest month to fly from Ontario is currently April; with September being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • 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 $1,313 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!

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