Carrier route record
DLFCA→SLC
Delta Air Lines · Kalispell to Salt Lake City
- Flights
- 447
- Period
- September 2025 to August 2026
- Share of route
- 40%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on FCA to SLC earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 447 flights, with a median arrival 7 minutes early.
Set against the rest of the country, Delta's FCA to SLC record is 9 points better than the US average of 77.3%. That gap is worth roughly 94 fewer late arrivals for every thousand flights.
Key figures
On time
86.7%
Arrivals under 15 minutes late, of 445 completed flights
Avg delay
122 min
Across delayed arrivals only, not all flights
Cancelled
0.45%
National rate is 1.89%
Whole route
89.4%
Every carrier on FCA to SLC, 1,125 flights
These figures cover 447 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Delta against every carrier on FCA to SLC
Delta flew 447 of the 1,125 flights on FCA to SLC, about 40% of it. Its 86.7% on time is 3 points worse than the route as a whole, which runs 89.4%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 91.2% to Delta at 86.7%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 678 | 91.2% | 91 min | 1.18% | A |
| Delta Air Lines (this page) | 447 | 86.7% | 122 min | 0.45% | A+ |
Flight by flight
Delta flight numbers on FCA to SLC
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Delta runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 447 flights.
- 5am–8am349 flights87.0%
- 8am–11am—
- 11am–2pm97 flights85.6%
- 2pm–5pm—
- 5pm–8pm1 flights—
- 8pm–5am—
Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.
The 5am–8am window is the strongest at 87.0% on time. The full set of windows spans about a point.
Across the year
Delta on FCA to SLC through the year
January is the weak month at 77.4% on time, against 94.3% in July. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. August was the busiest month here, with 62 flights.
Across the week, Saturday is the strongest day at 91.7% on time and Wednesday the weakest at 81.4%, a spread of 10 points.
Arrival by arrival
How late Delta on FCA to SLC runs when it is late
Delta on FCA to SLC often beats the schedule: 131 of 445 completed flights, 29%, arrived 15 minutes or more early. The 59 late arrivals split 22 under half an hour, 17 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early131 flights29.4%
- Within 15 min255 flights57.3%
- 15–29 min late22 flights4.9%
- 30–59 min late17 flights3.8%
- 1–2 hours late8 flights1.8%
- 2+ hours late12 flights2.7%
Scale runs 0% to 100%.
Share of 445 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 41 departures that left 15 minutes late or more, only 4 made it up before arrival. 22 flights left on time and still arrived late.
The worst days
Worst days for Delta on FCA to SLC
The latest arrival of the period was on 12 October 2025, 16 hours 52 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 October 2025 | 16 hours 52 minutes | Carrier |
| 11 February 2026 | 10 hours 55 minutes | Carrier |
| 15 January 2026 | 10 hours 6 minutes | Carrier |
| 23 December 2025 | 9 hours 25 minutes | Carrier |
| 12 January 2026 | 7 hours 45 minutes | Carrier |
Delay causes
Why Delta runs late on this route
Carrier accounts for 82% of the 7,171 delay minutes carriers reported here, and the remaining four split what is left.
- 82%Carrier
- 8%National Airspace System
- 6%Extreme weather
- 4%Late-arriving aircraft
The largest share of delay minutes, 82%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 5,847 of the 7,171 delay minutes reported here. The split is drawn from 7,171 reported delay minutes.
Cancellations are rare at 0.45%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 532 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg runs 84.9% on time across 447 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 447 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Delta on FCA to SLC
Put together: treat all of this as provisional. 447 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 86.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 445 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.