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Flights from Casper to Great Falls

Search cheap flights from Casper to Great Falls in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$214, and round-trip tickets start at US$492.

      • CPR 13:22
        9h 24m
        1 stop
        GTF 22:46
        Casper - Great Falls | Fri, Dec 19 | United Airlines
        GTF 14:35
        7h 50m
        1 stop
        CPR 22:25
        Great Falls - Casper | Tue, Dec 23 | United Airlines
        US$492 US$736
        33% OFF
        33% OFF
        US$736 US$492
      • CPR 05:30
        8h 9m
        1 stop
        GTF 13:39
        Casper - Great Falls | Tue, Dec 23 | United Airlines
        GTF 14:35
        7h 50m
        1 stop
        CPR 22:25
        Great Falls - Casper | Sat, Dec 27 | United Airlines
        US$655 US$736
        11% OFF
        11% OFF
        US$736 US$655
      • CPR 13:00
        17h 25m
        1 stop
        GTF Invalid Date
        Casper - Great Falls | Fri, Dec 12 | Normal Airline
        GTF 15:00
        6h
        Nonstop
        CPR 16:00
        Great Falls - Casper | Sun, Dec 14 | Normal Airline
        Find More Flights
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Displayed flight fares from Casper to Great Falls are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Casper to Great Falls Flight Details

The distance between Casper and Great Falls is about 638.64 km. Based on Trip.com's latest data, travel demand is highest in September. The off-season for travel is November.

Cheapest one-way flight priceUS$214
Cheapest return ticket priceUS$492
Cheapest monthNovember
Peak season for travelSeptember
Flight distance638.64 km

When is the cheapest time to book flights from Casper to Great Falls?

The cheapest time to fly from Casper to Great Falls: Jan 11 to Jan 18 — one-way prices start at US$213.

Cheapest flights
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  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Casper to Great Falls (CPR-GTF)?

    Based on Trip.com data, United Airlines offers one-way fares as low as US$214 on Cheapest nonstop routes (e.g. CPR to GTF on Wed, Jan 14), while United Airlines offers Cheapest nonstop round-trips from US$492 departing on Fri, Dec 19 and returning on Tue, Dec 23.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Casper to Great Falls is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Casper to Great Falls, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Jan 14, with one-way flights priced at just US$214.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Great Falls travel is around September.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Casper to Great Falls is November, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Casper to Great Falls on December 19, 2025 with United Airlines, with prices starting at US$491.
  • The time difference between Great Falls and Casper is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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