Carrier route record
DLJAC→SLC
Delta Air Lines · Jackson to Salt Lake City
- Flights
- 742
- Period
- September 2025 to August 2026
- Share of route
- 61%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on JAC to SLC earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 742 flights, with a median arrival 15 minutes early.
Set against the rest of the country, Delta's JAC to SLC record is 11 points better than the US average of 77.3%. That gap is worth roughly 106 fewer late arrivals for every thousand flights.
Key figures
On time
87.9%
Arrivals under 15 minutes late, of 735 completed flights
Avg delay
91 min
Across delayed arrivals only, not all flights
Cancelled
0.81%
National rate is 1.89%
Whole route
86.6%
Every carrier on JAC to SLC, 1,217 flights
These figures cover 742 flights between September 2025 and August 2026. The median arrival is 15 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 JAC to SLC
Delta flew 742 of the 1,217 flights on JAC to SLC, most of the route. Its 87.9% on time is about level with the route as a whole at 86.6%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Delta at 87.9% to SkyWest at 84.6%.
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 |
|---|---|---|---|---|---|
| Delta Air Lines (this page) | 742 | 87.9% | 91 min | 0.81% | A+ |
| SkyWest Airlines | 475 | 84.6% | 76 min | 1.26% | B |
Flight by flight
Delta flight numbers on JAC 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 742 flights.
- 5am–8am126 flights84.9%
- 8am–11am—
- 11am–2pm378 flights88.2%
- 2pm–5pm—
- 5pm–8pm238 flights88.9%
- 8pm–5am—
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 88.9% on time. The full set of windows spans 4 points.
Across the year
Delta on JAC to SLC through the year
May is the best month on the calendar at 96.8% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. September was the busiest month here, with 70 flights.
Across the week, Tuesday is the strongest day at 94.2% on time and Sunday the weakest at 80.4%, a spread of 14 points.
Arrival by arrival
How late Delta on JAC to SLC runs when it is late
Delta on JAC to SLC often beats the schedule: 380 of 735 completed flights, 52%, arrived 15 minutes or more early. The 89 late arrivals split 25 under half an hour, 28 between 30 and 60 minutes, and 36 an hour or more.
- 15+ min early380 flights51.7%
- Within 15 min266 flights36.2%
- 15–29 min late25 flights3.4%
- 30–59 min late28 flights3.8%
- 1–2 hours late23 flights3.1%
- 2+ hours late13 flights1.8%
Scale runs 0% to 100%.
Share of 735 completed flights by arrival against schedule.
18 of 90 late departures made up the time and arrived on time, 20% of them. 17 flights left on time and still arrived late.
The worst days
Worst days for Delta on JAC to SLC
The latest arrival of the period was on 8 February 2026, 17 hours 56 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in February 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 February 2026 | 17 hours 56 minutes | Carrier |
| 18 February 2026 | 8 hours 49 minutes | Late-arriving aircraft |
| 15 August 2026 | 8 hours 40 minutes | Late-arriving aircraft |
| 19 December 2025 | 7 hours 35 minutes | Carrier |
| 12 February 2026 | 4 hours 56 minutes | Late-arriving aircraft |
Delay causes
Why Delta runs late on this route
Late-arriving aircraft accounts for 45% of the 8,131 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Late-arriving aircraft
- 36%Carrier
- 10%National Airspace System
- 9%Extreme weather
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,131 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 8,131 reported delay minutes.
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,925 of the 8,131 delay minutes reported here.
Cancellations are rare at 0.81%, 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 4.9% 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.
At 205 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5pm–8pm window matters as much as it does.
The return leg runs 87.2% on time across 741 flights, within half a point 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. 742 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 JAC to SLC
Put together: treat all of this as provisional. 742 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 87.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 735 completed flights over 12 months sit behind that.
Related
Where to go next
- JAC to SLC, every carrier
- Delta on SLC to JAC, the return leg
- SkyWest Airlines on JAC to SLC84.6%
- Delta Air Lines network-wide record
- Salt Lake City International (SLC) delay statistics
- Flying to ski country: which routes into the mountains run on time
- Why the first flight of the morning is statistically safest
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.