Great Falls International Airport (GTF): Delays & On-Time Performance
Data through May 2026
Great Falls International Airport (GTF) runs noticeably smoother than most US airports: 90% of its ~6 daily departures leave on time, 12 points above the national average, with an average departure delay of just 9 minutes. 3 airlines fly from Great Falls, MT to 7 destinations.
- Departures on-time
- 90%
- left <15 min late
- Avg dep delay
- 9 min
- Arrivals on-time
- 86%
- Cancelled
- 0.5%
- Destinations
- 7
- nonstop
- Airlines
- 3
Monthly on-time trend
Best time of day to depart from GTF
Busiest routes from GTF
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| GTF → SLC | 1,071 | 93% | 5 min |
| GTF → DEN | 729 | 85% | 14 min |
| GTF → SEA | 117 | 78% | 12 min |
| GTF → LAS | 111 | 81% | 26 min |
Airline performance at GTF
| Airline | On-time departures | Avg delay | Flights |
|---|---|---|---|
| SkyWest Airlines | 92% | 7 min | 3,487 |
| United Airlines | 86% | 14 min | 802 |
| Allegiant Air | 79% | 24 min | 388 |
Frequently asked questions
- How often are flights delayed at GTF?
- 10% of departures from Great Falls International Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 9 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from GTF?
- Flights scheduled around 5 a.m. depart on time 97% of the time at GTF, versus 72% around 4 p.m.. Booking before noon is the usual rule of thumb here.
- What is the worst month for delays at GTF?
- In this dataset, March 2026 was the weakest month at GTF, with 85% of departures on time.
- How often are flights cancelled at GTF?
- 0.5% of scheduled departures from GTF were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Based on 4,677 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.