Carrier route record
DLSLC→SBA
Delta Air Lines · Salt Lake City to Santa Barbara
- Flights
- 157
- Period
- July 2025 to June 2026
- Share of route
- 15%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on SLC to SBA earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 157 flights, with a median arrival 11 minutes early.
Set against the rest of the country, Delta's SLC to SBA record is 7 points better than the US average of 77.6%. That gap is worth roughly 73 fewer late arrivals for every thousand flights.
Key figures
On time
84.9%
Arrivals under 15 minutes late, of 152 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
2.55%
National rate is 1.81%
Whole route
93.4%
Every carrier on SLC to SBA, 1,060 flights
These figures cover 157 flights between July 2025 and June 2026. The median arrival is 11 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 SLC to SBA
Delta flew 157 of the 1,060 flights on SLC to SBA, about 15% of it. Its 84.9% on time is 9 points worse than the route as a whole, which runs 93.4%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 94.8% to Delta at 84.9%.
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 | 903 | 94.8% | 48 min | 0.78% | A+ |
| Delta Air Lines (this page)thin sample | 157 | 84.9% | 60 min | 2.55% | B |
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 157 flights.
There are not enough flights in each departure window to split Delta's SLC to SBA record by time of day without the percentages moving on noise. The headline rate of 84.9% is the reliable figure here.
Across the year
Delta on SLC to SBA through the year
- Jul–Sep 202554 flights81.5%
- Oct–Dec 202584 flights85.2%
- Jan–Mar 202619 flights—
Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 84.9% on time across 157 flights.
Split by quarter, Delta on SLC to SBA logged 54 flights in Jul–Sep 2025, 84 flights in Oct–Dec 2025 and 19 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 84.9% annual figure is the one to use.
Delay causes
Why Delta runs late on this route
One category carries most of the weight here. Carrier accounts for 58% of the 1,385 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.
- 58%Carrier
- 38%Late-arriving aircraft
- 5%National Airspace System
38% 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 1,385 reported delay minutes here, that single category outweighs weather by 38 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 1,385 reported delay minutes.
The largest share of delay minutes, 58%, 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 800 of the 1,385 delay minutes reported here.
Cancellations run at 2.55%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
7.2% 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 about an hour, which a normal layover absorbs.
The 615 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 90.8% on time across 157 flights, 6 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
One caution: this is a thin sample. 157 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 SBA
Put together: treat all of this as provisional. 157 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 84.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 152 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.