In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What is the cheapest time of day to fly from REU to ONT?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Westchester County to Ontario as you normally would.

What airport do you fly into for flights to Ontario from Westchester County?

For a flight from Westchester County to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

Can I find deals for flights from Westchester County to Ontario that include hotel bookings?

Yes. In addition to deals on Westchester County to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Westchester County to Ontario?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Westchester County to Ontario.

Can I find deals for business class flights from Westchester County to Ontario?

Yes. Cheapflights offers flight deals from Westchester County to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Westchester County to Ontario

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Find flight deals from Westchester County to Ontario

Most accurate provider	FlightHub 3 stars
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Popular in	June
Cheapest in	January
Average price	$406

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Highest demand for flights based on searches. 10% potential increase in price ($51 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Delta from Westchester County to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,622 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

7.8

Good

8,622 reviews

Delta

7.8

Good

8,622 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to Ontario from Westchester County?
For a flight from Westchester County to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.
Can I find deals for flights from Westchester County to Ontario that include hotel bookings?
Yes. In addition to deals on Westchester County to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Westchester County to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Westchester County to Ontario.
Can I find deals for business class flights from Westchester County to Ontario?
Yes. Cheapflights offers flight deals from Westchester County to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top airline flying from Westchester County to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$263	Average$441	FlexibilityNo cancel fee	On-timeN/A

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Find cheap flights from Westchester County to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Westchester County to Ontario

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Delta from Westchester County to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Ontario from Westchester County?

Can I find deals for flights from Westchester County to Ontario that include hotel bookings?

How can I find direct flights from Westchester County to Ontario?

Can I find deals for business class flights from Westchester County to Ontario?

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.

Alternative routes for Westchester County to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Westchester County to Ontario by cabin class

Find flights from Westchester County to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ontario

Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 2, 2026.

Westchester County and Ontario flights

Browse other Westchester County and Ontario flight options. Last updated on October 2, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top airline flying from Westchester County to Ontario

100% Free

Book with Flexibility

Travel Smart

Cheap flights from Westchester County to Ontario (ONT)

Find cheap flights from Westchester County to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Westchester County to Ontario

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Delta from Westchester County to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Ontario from Westchester County?

Can I find deals for flights from Westchester County to Ontario that include hotel bookings?

How can I find direct flights from Westchester County to Ontario?

Can I find deals for business class flights from Westchester County to Ontario?

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.

Alternative routes for Westchester County to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Westchester County to Ontario by cabin class

Find flights from Westchester County to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ontario

Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 2, 2026.

Westchester County and Ontario flights

Browse other Westchester County and Ontario flight options. Last updated on October 2, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top airline flying from Westchester County to Ontario

100% Free

Book with Flexibility

Travel Smart