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$86+ 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 15/7. 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
18 Jun — 25 Jun1
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 13 June 2025.

Cheapest one-way flight

$612

Cheapest airline

Spirit Airlines

Most popular destination

Nadi (NAN)

Good one-way deal

$1,098 or less
The cheapest one-way flight from Ontario is currently to Nadi.
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On average, Spirit Airlines currently has the cheapest one-way flight from Ontario (avg. price of $114).
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Nadi (NAN) is currently the most popular flight destination from Ontario (average return price of $621).
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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 13 June 2025.

Wed 13/810:03ONT - PDX
Nonstop2h 16mAlaska Airlines
Tue 19/807:01PDX - ONT
Nonstop2h 22mAlaska Airlines
Deal found 11/6$293
Mon 15/913:42ONT - PDX
1 stop6h 55mUnited Airlines
Wed 17/913:45PDX - ONT
1 stop6h 48mUnited Airlines
Deal found 12/6$294
Sat 18/1009:10ONT - PDX
1 stop5h 30mSouthwest
Wed 22/1017:30PDX - ONT
1 stop3h 55mSouthwest
Deal found 12/6$317
Sat 23/818:05ONT - PDX
1 stop5h 47mDelta
Mon 15/919:14PDX - ONT
1 stop4h 32mDelta
Deal found 12/6$369
Mon 11/812:00ONT - BZN
1 stop5h 31mAlaska Airlines
Thu 14/811:16BZN - ONT
1 stop7h 48mAlaska Airlines
Deal found 11/6$390
Thu 21/817:05ONT - BZN
1 stop4h 30mSouthwest
Mon 25/814:25BZN - ONT
1 stop6h 30mSouthwest
Deal found 12/6$392
Thu 31/714:14ONT - BZN
1 stop7h 31mDelta
Mon 4/805:30BZN - ONT
1 stop4h 17mDelta
Deal found 12/6$395
Wed 3/906:00ONT - BIL
1 stop8h 03mHawaiian Airlines
Thu 11/919:18BIL - ONT
1 stop5h 41mHawaiian Airlines
Deal found 12/6$397
Tue 8/717:09ONT - BIL
1 stop5h 58mDelta
Wed 9/705:20BIL - ONT
1 stop4h 27mDelta
Deal found 12/6$398
Tue 12/816:50ONT - HLN
1 stop4h 23mDelta
Sat 16/805:50HLN - ONT
1 stop4h 05mDelta
Deal found 11/6$441
Sun 24/817:49ONT - PDX
Nonstop2h 23mHawaiian Airlines
Thu 28/821:30PDX - ONT
Nonstop2h 23mHawaiian Airlines
Deal found 12/6$441
Fri 5/906:05ONT - GTF
1 stop3h 58mDelta
Mon 8/905:45GTF - ONT
1 stop4h 10mDelta
Deal found 11/6$456

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 13 June 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

Wed 13/8

10:03-12:19

Nonstop2h 16m

Portland

Tue 19/8

07:01-09:23

Nonstop2h 22m

$293

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Mon 15/9

13:42-20:37

1 stop6h 55m

Portland

Wed 17/9

13:45-20:33

1 stop6h 48m

$294

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 18/10

09:10-14:40

1 stop5h 30m

Portland

Wed 22/10

17:30-21:25

1 stop3h 55m

$317

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 23/8

09:50-16:10

1 stop6h 20m

Portland

Tue 16/9

17:45-22:42

1 stop4h 57m

$369

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 11/8

12:00-18:31

1 stop5h 31m

Bozeman Gallatin Field

Thu 14/8

11:16-18:04

1 stop7h 48m

$390

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 21/8

17:05-22:35

1 stop4h 30m

Bozeman Gallatin Field

Mon 25/8

14:25-19:55

1 stop6h 30m

$392

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 31/7

14:14-22:45

1 stop7h 31m

Bozeman Gallatin Field

Mon 4/8

05:30-08:47

1 stop4h 17m

$395

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 3/9

06:00-15:03

1 stop8h 03m

Billings Logan Intl

Thu 11/9

19:18-23:59

1 stop5h 41m

$397

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 8/7

17:09-00:07

1 stop5h 58m

Billings Logan Intl

Wed 9/7

05:20-08:47

1 stop4h 27m

$398

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sun 24/8

17:49-20:12

Nonstop2h 23m

Portland

Thu 28/8

21:30-23:53

Nonstop2h 23m

$441

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 60 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 $544). Flying from Ontario in December will prove the most costly (average of $1,156). 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 (131 flights per day), Seattle (113 flights per day), and Atlanta (82 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 $1,098. 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.
China Airlines
8.3
Very Good
738 reviews
Check prices

Crew

8.5

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.3

Comfort

8.0

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
738 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Crew

8.5

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.3

Comfort

8.0

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
738 reviews
Check prices

Crew

8.5

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.3

Comfort

8.0

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
Air New Zealand
8.0
Very Good
483 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Crew

8.5

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.3

Comfort

8.0

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
Hawaiian Airlines
7.9
Good
2,494 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Crew

8.5

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.3

Comfort

8.0

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
8,790 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Crew

8.5

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.3

Comfort

8.0

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 13 June 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 $1,098 to Honolulu (prices may vary depending on the airline and departure time). On average, users have booked flights for $1,135 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 $2,634 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 December 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 $1,422 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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