Your next trip, last seen at €90
Lowest observedAllegiant Air · 2 stops · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €90, departing 14 Dec 2026 (Last checked: 25 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Air Canada, Alaska Airlines, Allegiant Air, Breeze Airways, Frontier Airlines, United Airlines, Volaris, WestJet (8)
- Typical journey time
- 7h 18m
About this route
Explore the fares we observed from Great Falls to Denver. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,001 km
- Typical journey time
- 7h 18m
- Seen on fares with a connection
- Alaska Airlines, Allegiant Air, United Airlines, Frontier Airlines, Air Canada, Volaris
- Alternative airports
- APA
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Great Falls International Airport (GTF) → Great Falls, city gazetteer reference point (47.5002, -111.3008): ≈ 6 km.
- Denver International Airport (DEN) → Denver, city gazetteer reference point (39.7392, -104.9847): ≈ 30 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest one-way fare we saw per airline
Cheapest airline from Great Falls to Denver: Allegiant Air, from €90 (checked 25 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Allegiant Air | €90Dec 14, 2026 | 11 |
| Alaska Airlines | €135Nov 18, 2026 | 67 |
| Frontier Airlines | €216Dec 3, 2026 | 5 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Great Falls to Denver?
The lowest fare Routavio has observed is €90, found on 25 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Great Falls to Denver?
In our observations December 2026 is the cheapest month so far, at €90.
Are there direct flights from Great Falls to Denver?
Our data holds no non-stop flight from Great Falls to Denver. The fares on this page include at least one stop.
Which airlines fly from Great Falls to Denver?
Routavio has seen these carriers on the route: Air Canada, Alaska Airlines, Allegiant Air, Breeze Airways, Frontier Airlines, United Airlines, Volaris, WestJet (8).
How long does the flight from Great Falls to Denver take?
Across the 85 fares Routavio observed, the average journey time is 15h 58m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Great Falls to Denver fares were non-stop?
None of the 85 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Great Falls to Denver?
Cheapest airline from Great Falls to Denver: Allegiant Air, from €90 (checked 25 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.