Carrier route record
DLSLC→JAC
Delta Air Lines · Salt Lake City to Jackson
- Flights
- 741
- 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 SLC to JAC 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 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 741 flights, with a median arrival 9 minutes early.
Set against the rest of the country, Delta's SLC to JAC record is 10 points better than the US average of 77.3%. That gap is worth roughly 99 fewer late arrivals for every thousand flights.
Key figures
On time
87.2%
Arrivals under 15 minutes late, of 733 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
0.54%
National rate is 1.89%
Whole route
86.8%
Every carrier on SLC to JAC, 1,219 flights
These figures cover 741 flights between September 2025 and August 2026. The median arrival is 9 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 SLC to JAC
Delta flew 741 of the 1,219 flights on SLC to JAC, most of the route. Its 87.2% on time is about level with the route as a whole at 86.8%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Delta at 87.2% to SkyWest at 86.1%.
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) | 741 | 87.2% | 59 min | 0.54% | A+ |
| SkyWest Airlines | 478 | 86.1% | 71 min | 1.26% | A |
Flight by flight
Delta flight numbers on SLC to JAC
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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 741 flights.
- 5am–8am—
- 8am–11am57 flights90.9%
- 11am–2pm331 flights84.8%
- 2pm–5pm245 flights87.6%
- 5pm–8pm1 flights—
- 8pm–5am107 flights91.5%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 84.8% on time against 91.5% for 8pm–5am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 331 flights scheduled in it.
Across the year
Delta on SLC to JAC through the year
July is the worst month at 80.0% on time, 12 points below April, the best at 91.7%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. September was the busiest month here, with 70 flights.
Across the week, Tuesday is the strongest day at 95.1% on time and Saturday the weakest at 80.0%, a spread of 15 points.
Arrival by arrival
How late Delta on SLC to JAC runs when it is late
Delta on SLC to JAC often beats the schedule: 206 of 733 completed flights, 28%, arrived 15 minutes or more early. The 94 late arrivals split 38 under half an hour, 22 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early206 flights28.1%
- Within 15 min433 flights59.1%
- 15–29 min late38 flights5.2%
- 30–59 min late22 flights3.0%
- 1–2 hours late23 flights3.1%
- 2+ hours late11 flights1.5%
Scale runs 0% to 100%.
Share of 733 completed flights by arrival against schedule.
17 of 88 late departures made up the time and arrived on time, 19% of them. 23 flights left on time and still arrived late.
The worst days
Worst days for Delta on SLC to JAC
The latest arrival of the period was on 12 February 2026, 5 hours 15 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across February, January, December and September, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 February 2026 | 5 hours 15 minutes | Extreme weather |
| 18 February 2026 | 4 hours 49 minutes | Extreme weather |
| 15 January 2026 | 3 hours 59 minutes | Late-arriving aircraft |
| 21 December 2025 | 3 hours 8 minutes | Late-arriving aircraft |
| 18 September 2025 | 2 hours 45 minutes | Carrier |
Delay causes
Why Delta runs late on this route
Carrier accounts for 45% of the 5,529 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Carrier
- 27%Late-arriving aircraft
- 14%National Airspace System
- 14%Extreme weather
Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 5,529 reported delay minutes.
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,470 of the 5,529 delay minutes reported here.
Cancellations are rare at 0.54%, 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 4.6% 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 8pm–5am window matters as much as it does.
The return leg runs 87.9% on time across 742 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. 741 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 SLC to JAC
Put together: treat all of this as provisional. 741 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 87.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 733 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.