Carrier route record
DLJAC→SLC
Delta Air Lines · Jackson to Salt Lake City
- Flights
- 694
- Period
- July 2025 to June 2026
- Share of route
- 57%
- Carriers
- 2
Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 694 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 77.6%. That gap is worth roughly 114 fewer late arrivals for every thousand flights.
Key figures
On time
89.0%
Arrivals under 15 minutes late, of 689 completed flights
Avg delay
100 min
Across delayed arrivals only, not all flights
Cancelled
0.72%
National rate is 1.81%
Whole route
87.4%
Every carrier on JAC to SLC, 1,218 flights
These figures cover 694 flights between July 2025 and June 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.
Carrier by carrier
Delta against every carrier on JAC to SLC
Delta flew 694 of the 1,218 flights on JAC to SLC, most of the route. Its 89.0% on time is 2 points better than the route as a whole, which runs 87.4%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Delta at 89.0% to SkyWest at 85.3%.
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) | 694 | 89.0% | 100 min | 0.72% | A+ |
| SkyWest Airlines | 524 | 85.3% | 80 min | 1.15% | A |
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 694 flights.
- 5am–8am146 flights84.9%
- 8am–11am—
- 11am–2pm371 flights88.9%
- 2pm–5pm—
- 5pm–8pm177 flights92.6%
- 8pm–5am—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 92.6% on time. The full set of windows spans 8 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 94.9% on time and Sunday the weakest at 80.2%. 15 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Delta runs late on this route
One category carries most of the weight here. Carrier accounts for 45% of the 7,583 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 45%Carrier
- 37%Late-arriving aircraft
- 10%Extreme weather
- 8%National Airspace System
37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 7,583 reported delay minutes here, that single category outweighs weather by 4 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 7,583 reported delay minutes.
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,415 of the 7,583 delay minutes reported here.
Cancellations are rare at 0.72%, below the national 1.81% 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
5.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
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 88.2% on time across 694 flights, within about 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. 694 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. 694 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 89.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 689 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.