Great Falls International Airport (GTF) delays & on-time performance
Great Falls, Montana · 7 nonstop destinations · 3 airlines · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at GTF right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
On-time arrivals
89%
arrived < 15 min late
Cancelled
0.8%
17 flights
Avg arrival delay
11 min
89 min when late
Departed on time
89%
avg taxi-out 15 min
Figures cover 2,168 departures from GTF; on-time is measured at arrival. Arrivals into GTF were on time 87% of the time.
Key facts
- Flights departing Great Falls International Airport (GTF) arrived on time 89% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.8% were cancelled, and 4% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (91% on time); Allegiant Air was the least (82%).
- Departures scheduled around 5am did best (96% on time); around 4pm did worst (77%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (43%).
Most delayed routes from GTF
Lowest on-time arrival rates among regularly flown routes.
- DEN · Denver86%728 flts
- SLC · Salt Lake City92%1,071 flts
Most reliable routes from GTF
Highest on-time arrival rates among regularly flown routes.
- SLC · Salt Lake City92%1,071 flts
- DEN · Denver86%728 flts
Best airline at GTF
Departures from this airport, ranked by on-time arrival.
| Airline | On time | Cancelled | Avg delay | Routes | Flights |
|---|---|---|---|---|---|
| SkyWest Airlines | 91% | 0.8% | 7 min | 5 | 1,439 |
| United Airlines | 83% | 0.9% | 18 min | 1 | 527 |
| Allegiant Air | 82% | 0.5% | 16 min | 2 | 202 |
Best time to fly out of GTF
On-time arrival rate by scheduled departure hour (local time).
- 5am96%365 flts
- 6am92%335 flts
- 7am90%68 flts
- 10am93%60 flts
- 11am94%62 flts
- 1pm92%331 flts
- 2pm80%364 flts
- 4pm77%74 flts
- 5pm87%52 flts
- 6pm88%345 flts
- 9pm70%37 flts
- 10pm80%36 flts
Monthly trend
Why departures were late
- Airline (crew, maintenance, cleaning, fueling)43%
- Extreme weather20%
- Late-arriving aircraft20%
- Air traffic control & airport congestion17%
- Security0%
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.