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

Currently, August is the cheapest month in which you can book a flight from Casper to Ontario (average of $246). Flying from Casper to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 CPR to ONT?

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

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

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

How can I find direct flights from Casper to Ontario?

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

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

Yes. Cheapflights offers flight deals from Casper 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.

$312+ Flights from Casper to Ontario

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Find flight deals from Casper to Ontario

Cheapest flights from Casper to Ontario
Explore the most affordable flight options available from Casper to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Fri 7/41:28 pmCPR - ONT

1 stop8h 26mUnited Airlines

Sun 7/66:10 amONT - CPR

2 stops15h 04mUnited Airlines

Deal found 7/1

$484

Last-minute flights from Casper to Ontario
Discover last-minute flight deals from Casper to Ontario. Data last updated July 1, 2025 and is based on user searches.

Fri 7/41:28 pmCPR - ONT

1 stop8h 26mUnited Airlines

Sun 7/66:10 amONT - CPR

2 stops15h 04mUnited Airlines

Deal found 7/1

$484

One-way flights from Casper to Ontario
Search for one-way flight options from Casper to Ontario. Find affordable one-way fares based on user searches. Data last updated July 1, 2025.

Mon 8/115:59 pmCPR - ONT

1 stop19h 33mUnited Airlines

Deal found 6/30

$312

Cheapflights Fare Finder

Use the filters below to find and compare flights from Casper to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CasperOntario

CPR - ONT

CPRONT

Casper Natrona County

Mon 8/11

5:59 pm-12:32 pm

1 stop19h 33m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Casper to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Casper with our price prediction graph.

Estimated round-trip 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.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown United Airlines from Casper to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,858 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

United Airlines

7.4

Good

8,858 reviews

United Airlines

7.4

Good

8,858 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

Related info for your journey

Can I find deals for flights from Casper to Ontario that include hotel bookings?
Yes. In addition to deals on Casper to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Casper to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Casper to Ontario.
Can I find deals for business class flights from Casper to Ontario?
Yes. Cheapflights offers flight deals from Casper 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.
What is the cheapest month to book a flight from Casper to Ontario?
Currently, August is the cheapest month in which you can book a flight from Casper to Ontario (average of $246). Flying from Casper to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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$312+ Cheap flights from Casper to Ontario (CPR - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Casper 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 Casper to Ontario

Cheapest flights from Casper to OntarioExplore the most affordable flight options available from Casper to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Casper to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Casper to Ontario that are best for you.

Best time to book a flight from Casper to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Casper with our price prediction graph.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown United Airlines from Casper to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Casper to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How can I find direct flights from Casper to Ontario?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Casper to Ontario
Explore the most affordable flight options available from Casper to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.