ON TIMEBOARD

DEN → FCA on time

Denver (Denver, CO) to Glacier Park (Kalispell, MT). Every scheduled flight, September 2025 to August 2026.

On time
81%
arrived < 15 min late
Cancelled
0.5%
1,010 flights
Typical arrival
−3 min
median vs schedule
When late
+58 min
average delay
Flights / day
3
1 airline

81% of flights from Denver to Kalispell arrived on time over the past 12 months. That is about the typical U.S. route. The 7 a.m. departures ran on time 91% of the time; the 7 p.m. ones 75%. 6% 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 DEN → FCA: when a flight was late, it was under 45 minutes late 61% of the time. About 1 in 18 flights landed an hour or more late, and 1 in 168 three hours or more; 0.5% were cancelled outright.

Share of all 1,010 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
United Airlines1,01081%0.5%−3 min5.5%+58 minUnited Airlines 80%, SkyWest 20%

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 DEN). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%7 a.m. departures: 91% on time (146 flights)917a8 a.m. departures: too few flights8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights10a11 a.m. departures: 82% on time (352 flights)8211anoon departures: too few flights12p1 p.m. departures: 83% on time (165 flights)831p2 p.m. departures: too few flights2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights4p5 p.m. departures: too few flights5p6 p.m. departures: too few flights6p7 p.m. departures: 75% on time (347 flights)757p
DEN → FCA, 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 DEN → FCA, each airline's last flight of the day was cancelled 0.6% of the time, against 0.5% for its earlier flights, about the same. It arrived 3+ hours late 0.9% of the time (earlier flights: 0.5%). 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
United Airlines7:30 p.m.0.6%0.9%0.5%first flight 7:40 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: October (91%). Worst: January (70%).

40%70%100%Jan: 70% on time (245 flights)70JanFeb: 74% on time (218 flights)74FebMar: 84% on time (244 flights)84MarApr: 84% on time (188 flights)84AprMay: 77% on time (254 flights)77MayJun: 73% on time (334 flights)73JunJul: 77% on time (316 flights)77JulAug: 78% on time (372 flights)78AugSep: 90% on time (300 flights)90SepOct: 91% on time (262 flights)91OctNov: 86% on time (177 flights)86NovDec: 75% on time (247 flights)75Dec

By day of week

DayFlightsOn timeCancelled
Monday15181%0.0%
Tuesday13488%0.0%
Wednesday13379%0.8%
Thursday13684%0.7%
Friday15379%1.3%
Saturday15276%0.7%
Sunday15179%0.0%

Why flights were late

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

Late inbound plane 49%Airline (crew, maintenance, ops) 30%Air traffic & airport (NAS) 14%Severe weather 7%

Cancellations: weather 5

Month by month

60%80%100%Sep 2023Jan 2024Jan 2025Jan 2026Jul 2024: 79% on time, 0.0% cancelledAug 2024: 75% on time, 0.0% cancelledJun 2025: 67% on time, 0.0% cancelledJul 2025: 77% on time, 1.6% cancelledAug 2025: 81% on time, 0.8% cancelledSep 2025: 92% on time, 0.0% cancelledOct 2025: 90% on time, 0.0% cancelledJun 2026: 78% on time, 0.0% cancelledAug 2026: 77% on time, 0.8% cancelled
Share of flights on time, by month (hover a point for cancellations)
DEN → FCA, 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
UA 54767:40 a.m.14691%0.0%−9 minSkyWest
UA 154711:15 a.m.32181%0.6%−3 minUnited Airlines
UA 6967:35 p.m.34775%0.6%0 minUnited Airlines

Worst days in the past year

DateFlightsOn timeCancelled
Oct 18, 2025425%0
Aug 17, 2026425%0
Oct 11, 2025425%0
Aug 21, 2026425%0
May 24, 2026425%0

Questions

How often are flights from DEN to FCA on time?

81% of 1,010 scheduled flights from Denver, CO to Kalispell, MT arrived within 15 minutes of schedule between September 2025 and August 2026. 0.5% were cancelled.

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

Flights scheduled to leave at 7 a.m. were the most reliable (91% on time). The 7 p.m. departures were the least (75%).

What month has the most delays from DEN to FCA?

January (70% on time). The best month is October (91%), over 2023–2026.

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

Not much. Each airline's last DEN–FCA flight of the day was cancelled 0.6% of the time over the past year, against 0.5% 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.