Carrier route record
OODEN→GTF
SkyWest Airlines · Denver to Great Falls
- Flights
- 201
- Period
- September 2025 to August 2026
- Share of route
- 28%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on DEN to GTF earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 201 flights, with a median arrival 7 minutes early.
Set against the rest of the country, SkyWest's DEN to GTF record is 9 points better than the US average of 77.3%. That gap is worth roughly 86 fewer late arrivals for every thousand flights.
Key figures
On time
85.9%
Arrivals under 15 minutes late, of 199 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
1.00%
National rate is 1.89%
Whole route
76.9%
Every carrier on DEN to GTF, 728 flights
These figures cover 201 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
SkyWest against every carrier on DEN to GTF
SkyWest flew 201 of the 728 flights on DEN to GTF, about 28% of it. Its 85.9% on time is 9 points better than the route as a whole, which runs 76.9%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 85.9% to United at 73.5%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page)thin sample | 201 | 85.9% | 67 min | 1.00% | A |
| United Airlines | 527 | 73.5% | 71 min | 0.38% | C+ |
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Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am—
- 11am–2pm74 flights80.8%
- 2pm–5pm—
- 5pm–8pm73 flights84.7%
- 8pm–5am54 flights94.4%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 80.8% on time against 94.4% for 8pm–5am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 74 flights scheduled in it.
Across the year
SkyWest on DEN to GTF through the year
- Oct–Dec 202580 flights88.8%
- Jan–Mar 2026121 flights84.0%
Scale runs 75% to 95%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 85.9% on time across 201 flights.
Split by quarter, SkyWest on DEN to GTF logged 80 flights in Oct–Dec 2025 and 121 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 85.9% annual figure is the one to use.
Arrival by arrival
How late SkyWest on DEN to GTF runs when it is late
SkyWest on DEN to GTF often beats the schedule: 66 of 199 completed flights, 33%, arrived 15 minutes or more early. The 28 late arrivals split 10 under half an hour, 6 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early66 flights33.2%
- Within 15 min105 flights52.8%
- 15–29 min late10 flights5.0%
- 30–59 min late6 flights3.0%
- 1–2 hours late7 flights3.5%
- 2+ hours late5 flights2.5%
Scale runs 0% to 100%.
Share of 199 completed flights by arrival against schedule.
5 of 25 late departures made up the time and arrived on time, 20% of them. 8 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on DEN to GTF
The latest arrival of the period was on 19 December 2025, 3 hours 43 minutes behind schedule; most of its delay minutes were filed as extreme weather. Three of the five worst days fell in February 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 3 hours 43 minutes | Extreme weather |
| 5 December 2025 | 3 hours 11 minutes | Carrier |
| 25 February 2026 | 3 hours 3 minutes | Late-arriving aircraft |
| 25 February 2026 | 2 hours 21 minutes | National Airspace System |
| 17 February 2026 | 2 hours 15 minutes | National Airspace System |
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,861 reported delay minutes.
- 36%National Airspace System
- 29%Carrier
- 20%Late-arriving aircraft
- 15%Extreme weather
Extreme weather accounts for 15% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.4 times the usual weather exposure. The split is drawn from 1,861 reported delay minutes.
36% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 674 minutes out of 1,861, against a national NAS share of 21%.
Cancellations sit at 1.00% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
6.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 623 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 91.5% on time across 201 flights, 6 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
One caution: this is a thin sample. 201 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on DEN to GTF
Put together: treat all of this as provisional. 201 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 85.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 199 completed flights over 12 months sit behind that.
Related
Where to go next
- DEN to GTF, every carrier
- SkyWest on GTF to DEN, the return leg
- United Airlines on DEN to GTF73.5%
- SkyWest Airlines network-wide record
- Denver International (DEN) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.