DEN to GTF flight delays & on-time performance
Nonstop flights from Denver International Airport to Great Falls International Airport · 623 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or GTF right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Denver (DEN) to Great Falls (GTF) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 0.5% were cancelled, and 9% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (86% on time); United Airlines was the least (75%).
- Departures scheduled around 8pm did best (95% on time); around 7pm did worst (68%).
- Monday was the most reliable day to fly (84% on time) and Wednesday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from DEN to GTF?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 86% | 1.0% | 11 min | 6.0% | 201 |
| United Airlines | 75% | 0.4% | 18 min | 10.1% | 527 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 11am84%365 flights
- 7pm68%307 flights
- 8pm95%56 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday84%0.0% cancelled
- Tuesday79%1.0% cancelled
- Wednesday71%1.0% cancelled
- Thursday79%0.0% cancelled
- Friday73%0.0% cancelled
- Saturday78%1.9% cancelled
- Sunday82%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion15%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion25%
- Security0%
DEN to GTF: common questions
- How often are DEN to GTF flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Denver to Great Falls cancelled?
- 0.5% of scheduled flights were cancelled (4 of 728).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 67 min behind schedule on average, and 9.0% of flights were an hour or more late.
- How long is taxi time at DEN?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: GTF to DEN — 86% on time
More flights from Denver
More flights to Great Falls
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DEN → GTF, nonstop flights by US airlines that report to the DOT. How we calculate this.