ON TIMEBOARD

FCA → SLC on time

Glacier Park (Kalispell, MT) to Salt Lake City (Salt Lake City, UT). Every scheduled flight, September 2025 to August 2026.

On time
88%
arrived < 15 min late
Cancelled
0.9%
1,125 flights
Typical arrival
−10 min
median vs schedule
When late
+106 min
average delay
Flights / day
3
1 airline

88% of flights from Kalispell to Salt Lake City arrived on time over the past 12 months. That is better than the typical U.S. route. The noon departures ran on time 89% of the time; the 5 a.m. ones 87%. 5% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for FCA → SLC: when a flight was late, it was under 45 minutes late 55% of the time. About 1 in 26 flights landed an hour or more late, and 1 in 59 three hours or more; 0.9% were cancelled outright.

Share of all 1,125 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Delta Air Lines1,12588%0.9%−10 min3.9%+106 minSkyWest 60%, Delta Air Lines 40%

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at FCA). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%5 a.m. departures: 87% on time (349 flights)875a6 a.m. departures: too few flights6a7 a.m. departures: too few flights7a8 a.m. departures: too few flights8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights10a11 a.m. departures: too few flights (35 flights)11anoon departures: 89% on time (314 flights)8912p1 p.m. departures: too few flights (83 flights)1p2 p.m. departures: too few flights (19 flights)2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights4p5 p.m. departures: too few flights (69 flights)5p6 p.m. departures: 88% on time (256 flights)886p
FCA → SLC, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On FCA → SLC, each airline's last flight of the day was cancelled 0.9% of the time, against 0.9% for its earlier flights, about the same. It arrived 3+ hours late 0.6% of the time (earlier flights: 2.2%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
Delta Air Lines6:10 p.m.0.9%0.6%0.9%first flight 5:19 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

By month

Each calendar month pooled over 2023–2026. Best: September (97%). Worst: January (78%).

40%70%100%Jan: 78% on time (262 flights)78JanFeb: 88% on time (237 flights)88FebMar: 94% on time (271 flights)94MarApr: 95% on time (266 flights)95AprMay: 90% on time (314 flights)90MayJun: 94% on time (348 flights)94JunJul: 91% on time (314 flights)91JulAug: 89% on time (336 flights)89AugSep: 97% on time (281 flights)97SepOct: 93% on time (276 flights)93OctNov: 88% on time (257 flights)88NovDec: 85% on time (264 flights)85Dec

By day of week

DayFlightsOn timeCancelled
Monday17591%0.6%
Tuesday15291%0.0%
Wednesday15083%2.7%
Thursday15488%0.7%
Friday16886%0.0%
Saturday15790%1.9%
Sunday16989%0.6%

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 77%Severe weather 14%Air traffic & airport (NAS) 6%Late inbound plane 2%

Cancellations: weather 4 · air traffic/airport 4 · airline 2

Month by month

60%80%100%Sep 2023Jan 2024Jan 2025Jan 2026Jun 2024: 91% on time, 0.0% cancelledJul 2024: 88% on time, 0.8% cancelledAug 2024: 88% on time, 0.0% cancelledMay 2025: 93% on time, 0.0% cancelledJun 2025: 98% on time, 0.0% cancelledJul 2025: 97% on time, 0.0% cancelledAug 2025: 97% on time, 0.0% cancelledMay 2026: 84% on time, 0.0% cancelledJun 2026: 92% on time, 0.0% cancelledAug 2026: 83% on time, 0.0% cancelled
Share of flights on time, by month (hover a point for cancellations)
FCA → SLC, monthly on-time and cancellation rate.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
DL 22015:20 a.m.34987%0.6%−7 minDelta Air Lines
DL 37986:10 p.m.32389%0.9%−12 minSkyWest

Worst days in the past year

DateFlightsOn timeCancelled
Jan 15, 202630%0
Apr 16, 2026333%0
Oct 11, 2025333%0
Jul 17, 2026333%0
Feb 18, 2026333%0

Questions

How often are flights from FCA to SLC on time?

88% of 1,125 scheduled flights from Kalispell, MT to Salt Lake City, UT arrived within 15 minutes of schedule between September 2025 and August 2026. 0.9% were cancelled.

What is the best time of day to fly FCA to SLC?

Flights scheduled to leave at noon were the most reliable (89% on time). The 5 a.m. departures were the least (87%).

What month has the most delays from FCA to SLC?

January (78% on time). The best month is September (97%), over 2023–2026.

Is the last flight of the day from FCA to SLC more likely to be cancelled?

Not much. Each airline's last FCA–SLC flight of the day was cancelled 0.9% of the time over the past year, against 0.9% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.