Flight number record
DL 2797
Delta Air Lines · Salt Lake City to San Antonio
- Route
- SLC → SAT
- Departs
- 20:50
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2797, check with Delta Air Lines.
DL 2797 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 364 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 2797's record is 6 points better than the US average of 77.3%. That gap is worth roughly 63 fewer late arrivals for every thousand flights.
Key figures
On time
83.6%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.89%
1 hour+ late
5.6%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 8 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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Schedule
When DL 2797 flies
DL 2797 flies SLC to SAT without a single fixed slot. Its most common scheduled departure was 20:50, used on 74 of 364 flights, with 20:40 (73 flights) and 20:55 (51 flights) next.
- Departs 20:5074 flights20.3%
- Departs 20:4073 flights20.1%
- Departs 20:5551 flights14.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 20:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 2797 runs 14 points better at 83.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 2797 next to SLC to SAT
Every carrier on SLC to SAT combined arrived on time 84.5% of the time across 1,013 flights, so DL 2797 is about level with it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2797thin sample | 364 | 83.6% | 79 min | 1.10% | B |
| All Delta Air Lines on SLC–SAT | 1,013 | 84.5% | 62 min | 0.79% | B+ |
| All carriers on SLC–SAT | 1,013 | 84.5% | 62 min | 0.79% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2797 quarter by quarter
Quarter by quarter DL 2797 held fairly steady: 85.6% in Oct–Dec 2025, 83.1% in Jan–Mar 2026, 84.3% in Apr–Jun 2026 and 83.9% in Jul–Sep 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202592 flights85.6%
- Jan–Mar 202690 flights83.1%
- Apr–Jun 202690 flights84.3%
- Jul–Sep 202662 flights83.9%
Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2797 ranged from 78.4% on Friday to 88.2% on Sunday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2797 runs when it is late
DL 2797 often beats the schedule: 115 of 359 completed flights, 32%, arrived 15 minutes or more early. The 59 late arrivals split 14 under half an hour, 25 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early115 flights32.0%
- Within 15 min185 flights51.5%
- 15–29 min late14 flights3.9%
- 30–59 min late25 flights7.0%
- 1–2 hours late10 flights2.8%
- 2+ hours late10 flights2.8%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
20 of 72 late departures made up the time and arrived on time, 28% of them. Only 7 left on time and still arrived late.
The worst days
Worst days for DL 2797
The latest arrival of the period was on 26 February 2026, 10 hours 36 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 February 2026 | 10 hours 36 minutes | Carrier |
| 12 May 2026 | 9 hours 32 minutes | Carrier |
| 29 July 2026 | 3 hours 58 minutes | Late-arriving aircraft |
| 17 December 2025 | 3 hours 34 minutes | Carrier |
| 28 January 2026 | 3 hours 3 minutes | Carrier |
Delay causes
Why DL 2797 runs late
Carrier accounts for 66% of the 4,680 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Carrier
- 25%Late-arriving aircraft
- 6%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 66%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,097 of the 4,680 delay minutes reported here. The split is drawn from 4,680 delay minutes reported on DL 2797.
Cancellations sit at 1.10% against a national 1.89%, which is ordinary. Diversions add another 0.27%.
Connections and routes
What a delay on this flight costs
5.6% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 1,087 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.
Every one of the 364 flights under DL 2797 in the data flew SLC to SAT. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 364 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 DL 2797
For a booking, read DL 2797 as 83.6% on time with 1.10% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SLC to SAT, every carrier and departure
- SAT to SLC, the return direction
- Delta Air Lines 3123 on the same route83.9%
- Salt Lake City International (SLC) delay statistics
- San Antonio International (SAT) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.