GTF to SLC flight delays & on-time performance
Nonstop flights from Great Falls International Airport to Salt Lake City International Airport · 463 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at GTF or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Great Falls (GTF) to Salt Lake City (SLC) arrived on time 92% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.7% were cancelled, and 2% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 5am did best (96% on time); around 6pm did worst (89%).
- Tuesday was the most reliable day to fly (99% on time) and Sunday the least (89%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (56%).
Which airline is most on time from GTF to SLC?
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. | 92% | 0.7% | 6 min | 2.0% | 1,071 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am96%365 flights
- 11am95%41 flights
- 1pm92%323 flights
- 6pm89%342 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday90%0.0% cancelled
- Tuesday99%0.0% cancelled
- Wednesday95%1.3% cancelled
- Thursday91%0.7% cancelled
- Friday90%0.6% cancelled
- Saturday93%2.1% cancelled
- Sunday89%0.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)56%
- Extreme weather38%
- Air traffic control & airport congestion6%
- Late-arriving aircraft0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Air traffic control & airport congestion50%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
GTF to SLC: common questions
- How often are GTF to SLC flights on time?
- 92% 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 Great Falls to Salt Lake City cancelled?
- 0.7% of scheduled flights were cancelled (8 of 1,071).
- How long are typical delays?
- Across all flights the average arrival delay was 6 min (early arrivals count as zero). Flights that were late arrived 76 min behind schedule on average, and 2.0% of flights were an hour or more late.
- How long is taxi time at GTF?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: GTF → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.