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Route on-time record

SLC to GTF: most on-time flights and the best time to fly

Salt Lake City (Salt Lake City International Airport) to Great Falls (Great Falls International Airport). 1,071 nonstop flights in Jun 2025 to May 2026, 93% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was SkyWest 3845 at 8:55 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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SLC → GTF

Salt Lake City to Great Falls: 1,071 nonstop flights a year

On time (12 months)

93%

Cancelled

0.7%

avg delay 4 min

Best time to leave

6 to 9 PM

96% on time vs 88% 3 to 6 PM

Most reliable airline

SkyWest

93% chance on time

Check SLC to GTF fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · SkyWest 3845 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:55 PM → 10:30 PM1h 34m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    95%

    chance on time

    On time (history)
    96%
    Cancelled
    0.3%
    Avg arrival delay
    2 min
    • Arrived on time 96% of the time (361 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (6 to 9 PM: 96% on time; 3 to 6 PM: 88%).

    Strong track record · 361 flights

    Find 8:55 PM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 3859 · sold as United Express, Delta Connection, American Eagle or Alaska

    10:45 AM → 12:24 PM1h 39m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    94%

    chance on time

    On time (history)
    96%
    Cancelled
    1.4%
    Avg arrival delay
    4 min
    • Arrived on time 96% of the time (359 flights, Jun 2025 to May 2026).

    Strong track record · 359 flights

    Find 10:45 AM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 3934 · sold as United Express, Delta Connection, American Eagle or Alaska

    4:03 PM → 5:39 PM1h 36m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 90% of the time (86 flights, Jun 2025 to May 2026).
    • Never cancelled in 86 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 88% on time; 6 to 9 PM: 96%).

    Moderate track record · 86 flights

    Find 4:03 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)93%

    1,071 flights · 93% on time as flown · 0.7% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • 9 AM to noon96%

    364 flights · avg delay 4 min

  • 3 to 6 PM88%

    343 flights · avg delay 7 min

  • 6 to 9 PM96%

    223 flights · avg delay 2 min

  • After 9 PM94%

    141 flights · avg delay 3 min

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
90
F
92
M
93
A
92
M
91
J
95
J
95
A
93
S
96
O
98
N
93
D
90

What delays this route

  • Airline (crew, maintenance, boarding)67%
  • Severe weather26%
  • Air traffic control and airport volume7%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from SLC to GTF…

SLC to GTF questions

What time of day is best to fly SLC to GTF?
6 to 9 PM: 96% of flights arrived on time, against 88% for departures 3 to 6 PM.
Which airline is most on time from SLC to GTF?
SkyWest, with a season-adjusted 93% chance of operating and arriving on time over 1,071 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on SLC to GTF?
December (90% on time); the best was October (98%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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