ONT - CPR

$428 Find Cheap Flights from Ontario to Casper - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$428
Typical prices: $318-$538
United Airlines
Mon 11/12Fri 11/16
ONT - CPR • 1 stop
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Booking Insights
Flight Deals

Cheap Flights from Ontario to Casper (ONT-CPR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Casper

Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
5:00 am - 10:49 amONT  Ontario-CPR Casper Natrona County
4h 49m1 stop Denver Intl
United Airlines Logo
3:13 pm - 8:51 pmCPR  Casper Natrona County-ONT Ontario
6h 38m1 stop Denver Intl
$428United Airlines
Wed, Oct 14 - Thu, Dec 31
United Airlines Logo
5:00 am - 2:36 pmONT  Ontario-CPR Casper Natrona County
8h 36m1 stop Denver Intl
United Airlines Logo
1:19 pm - 9:00 pmCPR  Casper Natrona County-ONT Ontario
8h 41m1 stop Denver Intl
$443United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
5:00 am - 10:49 amONT  Ontario-CPR Casper Natrona County
4h 49m1 stop Denver Intl
United Airlines Logo
1:29 pm - 8:51 pmCPR  Casper Natrona County-ONT Ontario
8h 22m1 stop Denver Intl
$473United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
5:00 am - 10:49 amONT  Ontario-CPR Casper Natrona County
4h 49m1 stop Denver Intl
United Airlines Logo
5:15 am - 3:33 pmCPR  Casper Natrona County-ONT Ontario
11h 18m2 stops Denver Intl San Francisco
$479United Airlines
Wed, Oct 14 - Thu, Dec 31
United Airlines Logo
5:00 am - 10:48 amONT  Ontario-CPR Casper Natrona County
4h 48m1 stop Denver Intl
United Airlines Logo
11:33 am - 10:53 pmCPR  Casper Natrona County-ONT Ontario
12h 20m2 stops Denver Intl San Francisco
$494United Airlines
Thu, Oct 22 - Thu, Oct 29
United Airlines Logo
5:00 am - 12:39 pmONT  Ontario-CPR Casper Natrona County
6h 39m1 stop Denver Intl
United Airlines Logo
5:15 am - 12:30 pmCPR  Casper Natrona County-ONT Ontario
8h 15m1 stop Denver Intl
$519United Airlines
Booking Insights

Price, demand and travel trends for Ontario to Casper flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to Casper?

Round-trip flights from Ontario to Casper typically range from $318 to $538. The lowest price found in the past 5 days was $428, on United Airlines.

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Key details for Ontario to Casper flights

Cheapest flight

$428
Round-trip flight from Ontario to Casper

When to book flights from Ontario to Casper

Are your dates flexible? Find out the best times to travel from Ontario to Casper based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to Casper flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Casper?

    Only Economy Class is available on flights from Ontario to Casper.

  • Do I need a passport to fly from Ontario to Casper?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Ontario to Casper flight?

    Round-trip flights from Ontario to Casper range from $318 to $538, with an average of $409 over the past 12 months. Anything below $318 counts as a good deal.

  • Have flight prices from Ontario to Casper changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $428 to $685. That means the highest observed fare was about 60% higher than the lowest one.

  • What car rental options are available at Casper Natrona County Airport (CPR)?

    Casper Natrona County Airport (CPR) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:

    • Budget
    • Hertz
    • Avis
    • Enterprise Rent-A-Car
    • Alamo

  • Which airports can I use when flying from Ontario to Casper?

    Flights from Ontario to Casper usually depart from Ontario (ONT) and arrive at Casper Natrona County (CPR).

  • Which airports do connecting flights from Ontario to Casper pass through?

    Most connecting flights from Ontario to Casper pass through Denver Intl (DEN), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Ontario to Casper?

    Yes. Flexible dates can save you up to 68% on flights from Ontario to Casper. Friday is the cheapest departure day at $308 round-trip on average, while Sunday is the most expensive at $941, a difference of $633.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Ontario and Casper?

    Casper is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Ontario to Casper flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Sunday. On this route, Friday flights average $308, about $633 less than Sunday fares (67% savings) based on the last 12 months.

More options for your flight from Ontario to Casper

Complete your trip to Casper with a hotel stay or car rental

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