Question 1

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

Accepted Answer

For the current month, the most popular flights from Ontario are Las Vegas, Dallas/Fort Worth Airport, Denver. Las Vegas, Dallas/Fort Worth Airport, Guadalajara are the most popular locations from Ontario year round.

Question 2

When is the best time to book a flight from Ontario?

Accepted Answer

The best time to book flights from Ontario is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 3

What is the cheapest month to book a flight from Ontario?

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from Ontario (average of ₱45,697). Flying from Ontario in December will prove the most costly (average of ₱85,188). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Question 4

Which airlines fly from Ontario?

Accepted Answer

Only one airline operates round-trip flights from Ontario: China Airlines. This airline flies to the following popular destinations: Manila.

Question 5

What are popular destinations to fly to from Ontario?

Accepted Answer

If you’re flying from Ontario, these routes are more frequently taken by airlines Dallas (113 flights per day), Seattle (94 flights per day) and Atlanta (69 flights per day).

Question 6

What is the cheapest place to fly to from Ontario?

Accepted Answer

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at ₱9,400. Explore other affordable destinations below.

Question 7

What is the cheapest flight from Ontario to anywhere?

Accepted Answer

Users have flown out of Ontario for as low as ₱9,400 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for ₱27,243 to fly from Ontario.

Question 8

What is the cheapest premium economy flight from Ontario?

Accepted Answer

If you're looking for an elevated level of comfort for your next adventure, premium economy flights from Ontario may suit your needs. The cheapest premium economy flights from Ontario are:
Fly from Ontario to Taipei City Taiwan Taoyuan Intl Airport starting at ₱122,133

Question 9

What is the cheapest month to fly from Ontario?

Accepted Answer

February is currently the cheapest month to fly from Ontario. At this moment in time December is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

Question 10

Where are the cheapest places to fly to from Ontario?

Accepted Answer

Check out the cheapest flights from Ontario to embark to:
Fly from Ontario to Manila from ₱46,198
Fly from Ontario to Angeles City from ₱48,455
Fly from Ontario to Cebu City from ₱48,643

Question 11

How does Cheapflights help users find flights from Ontario?

Accepted Answer

Cheapflights makes it easy to find flights from Ontario by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Question 12

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

Accepted Answer

Cheapflights helps you find that perfect flight from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 13

Can Cheapflights find flights from Ontario with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario flexibly with Cheapflights today.

Question 14

Can Cheapflights notify me if prices for flights from Ontario become cheaper?

Accepted Answer

Yes! Start tracking prices for flights from Ontario today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

₱7,459+ Cheap flights from Ontario

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. 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.

Find flights from Ontario within your budget

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.

Travel insights for flights from Ontario

What is the cheapest month to book a flight from Ontario?

Which airlines fly from Ontario?

Only one airline operates round-trip flights from Ontario: China Airlines. This airline flies to the following popular destinations: Manila.

What are popular destinations to fly to from Ontario?

If you’re flying from Ontario, these routes are more frequently taken by airlines Dallas (113 flights per day), Seattle (94 flights per day) and Atlanta (69 flights per day).

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at ₱9,400. Explore other affordable destinations below.

When is the best time to book a flight from Ontario?

The best time to book flights from Ontario is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Airline reviews for flights from Ontario

Get a feel of what it's like to fly with China Airlines from Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

Fly your favorite airline from Ontario

Browse through various options for flying your favorite airline from Ontario. Flight routes are based on user searches made on Cheapflights and were last updated on September 17, 2026.

Direct flights from California

Book a non-stop flight from one of these other cities located in California.

Airports servicing Ontario

Fly out of one of these airports located in Ontario.

Fly from other United States cities

Consider departing from one of these cities also located in United States. Flight origins are based on user searches made on Cheapflights and were last updated on September 17, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Related info for your journey

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

What is the cheapest flight from Ontario to anywhere?

What is the cheapest premium economy flight from Ontario?

What is the cheapest month to fly from Ontario?

Where are the cheapest places to fly to from Ontario?

How does Cheapflights help users find flights from Ontario?

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

Can Cheapflights find flights from Ontario with no change fees?

Can Cheapflights notify me if prices for flights from Ontario become cheaper?

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario?

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

Can Cheapflights find flights from Ontario with no change fees?

Can Cheapflights notify me if prices for flights from Ontario become cheaper?

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