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$101+ 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 2/4. 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
5 Mar — 12 Mar1
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 28 February 2025.

Cheapest one-way flight

$657

Cheapest airline

Alaska Airlines

Most popular destination

Nadi (NAN)

Good one-way deal

$1,172 or less
The cheapest one-way flight from Ontario is currently to Nadi.
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On average, Alaska Airlines currently has the cheapest one-way flight from Ontario (avg. price of $176).
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Nadi (NAN) is currently the most popular flight destination from Ontario (average return price of $674).
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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 28 February 2025.

Mon 28/406:10ONT - PDX
1 stop4h 05mSouthwest
Thu 1/506:10PDX - ONT
1 stop5h 55mSouthwest
Deal found 27/2$291
Thu 20/305:40ONT - PDX
1 stop5h 07mDelta
Wed 26/319:05PDX - ONT
1 stop4h 51mDelta
Deal found 26/2$295
Tue 25/307:00ONT - PDX
Nonstop2h 24mAlaska Airlines
Tue 1/414:45PDX - ONT
Nonstop2h 17mAlaska Airlines
Deal found 27/2$312
Thu 3/407:00ONT - PDX
Nonstop2h 24mHawaiian Airlines
Mon 7/407:05PDX - ONT
Nonstop2h 23mHawaiian Airlines
Deal found 27/2$348
Sat 3/513:50ONT - BZN
1 stop7h 40mSouthwest
Wed 7/514:20BZN - ONT
1 stop6h 45mSouthwest
Deal found 27/2$353
Sun 4/506:00ONT - PDX
1 stop6h 39mUnited Airlines
Sun 11/506:00PDX - ONT
1 stop6h 24mUnited Airlines
Deal found 27/2$374
Wed 30/406:00ONT - GTF
1 stop4h 14mDelta
Sun 4/518:35GTF - ONT
1 stop6h 06mDelta
Deal found 27/2$452
Wed 7/520:59ONT - BIL
1 stop17h 08mAlaska Airlines
Tue 13/513:34BIL - ONT
1 stop7h 55mAlaska Airlines
Deal found 26/2$452
Thu 27/306:00ONT - HLN
1 stop8h 39mAlaska Airlines
Mon 31/316:19HLN - ONT
1 stop8h 40mAlaska Airlines
Deal found 27/2$489
Fri 11/406:00ONT - BZN
1 stop5h 22mDelta
Mon 14/413:10BZN - ONT
1 stop4h 23mDelta
Deal found 27/2$489
Mon 24/317:15ONT - BIL
1 stop6h 01mDelta
Mon 31/318:26BIL - ONT
1 stop6h 30mDelta
Deal found 27/2$489
Thu 17/407:00ONT - BZN
1 stop5h 03mAlaska Airlines
Sun 20/414:53BZN - ONT
1 stop10h 06mAlaska Airlines
Deal found 27/2$535

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 28 February 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

Mon 28/4

06:10-10:15

1 stop4h 05m

Portland

Thu 1/5

06:10-12:05

1 stop5h 55m

$291

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 20/3

05:40-10:47

1 stop5h 07m

Portland

Wed 26/3

19:05-23:56

1 stop4h 51m

$295

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 25/3

07:00-09:24

Nonstop2h 24m

Portland

Tue 1/4

14:45-17:02

Nonstop2h 17m

$312

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 3/4

07:00-09:24

Nonstop2h 24m

Portland

Mon 7/4

07:05-09:28

Nonstop2h 23m

$348

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sat 3/5

13:50-22:30

1 stop7h 40m

Bozeman Gallatin Field

Wed 7/5

14:20-20:05

1 stop6h 45m

$353

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sun 4/5

06:00-12:39

1 stop6h 39m

Portland

Sun 11/5

06:00-12:24

1 stop6h 24m

$374

OntarioGreat Falls

ONT - GTF

ONTGTF

Ontario

Wed 30/4

06:00-11:14

1 stop4h 14m

Great Falls

Sun 4/5

18:35-23:41

1 stop6h 06m

$452

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 7/5

20:59-15:07

1 stop17h 08m

Billings Logan Intl

Tue 13/5

13:34-20:29

1 stop7h 55m

$452

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Thu 27/3

06:00-15:39

1 stop8h 39m

Helena

Mon 31/3

16:19-23:59

1 stop8h 40m

$489

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 11/4

06:00-12:22

1 stop5h 22m

Bozeman Gallatin Field

Mon 14/4

13:10-16:33

1 stop4h 23m

$489

Flights are sorted by cheapest return flights first.

Deals found on 27/2

Showing 1-10 of 59 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 $626). Flying from Ontario in September will prove the most costly (average of $1,272). 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 (70 flights per day), Seattle (66 flights per day), and San Francisco (62 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 $1,172. 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
8.2
Very Good
721 reviews
Check prices

Boarding

8.3

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

China Airlines
8.2
Very Good
721 reviews
China Airlines
8.2
Very Good
721 reviews
Check prices

Boarding

8.3

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Alaska Airlines
8.0
Very Good
9,715 reviews
China Airlines
8.2
Very Good
721 reviews
Check prices

Boarding

8.3

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Delta
8.0
Very Good
8,138 reviews
China Airlines
8.2
Very Good
721 reviews
Check prices

Boarding

8.3

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Hawaiian Airlines
7.9
Good
2,319 reviews
China Airlines
8.2
Very Good
721 reviews
Check prices

Boarding

8.3

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Qatar Airways
7.4
Good
3,584 reviews
China Airlines
8.2
Very Good
721 reviews
Check prices

Boarding

8.3

Crew

8.5

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

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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 28 February 2025.

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

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

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as $1,172 to Honolulu (prices may vary depending on the airline and departure time). On average, users have booked flights for $1,212 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 $2,812 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 $1,105 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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