United AirlinesDepart06:30
Sat, Nov 14GTF → CPR
3h 13m · 1 stop
$375one way, per person
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- Cheapest fare
- $375
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 3h 07m
United Airlines · Sat, Nov 14
from $375
Usually 1+ stop
640 km
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Cheapest month to fly from Great Falls to Casper
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Great Falls to Casper
Great Falls (GTF) and Casper (CPR) are about 640 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 07m. Over the next few months, one-way fares start from $375, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Great Falls to Casper?
The cheapest one-way fare we've seen recently is $375 with United Airlines, departing Saturday, November 14, 2026.
What is the cheapest month to fly from Great Falls to Casper?
November 2026 currently has the lowest fares, from $375 one way.
Are there direct flights from Great Falls to Casper?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Great Falls to Casper?
The quickest journey we've seen takes about 3h 07m. Great Falls and Casper are around 640 km apart.
Which airlines fly from Great Falls to Casper?
Recent fares on this route were with United Airlines.
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