Flight number record
DL 2873
Delta Air Lines · Austin to Salt Lake City
- Route
- AUS → SLC
- Departs
- 12:25
- Flights
- 279
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2873, check with Delta Air Lines.
DL 2873 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 an hour and a half on average. That rests on 279 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 2873's record is 6 points better than the US average of 77.3%. That gap is worth roughly 61 fewer late arrivals for every thousand flights.
Key figures
On time
83.4%
Arrivals under 15 minutes late, of 277 completed flights
Avg delay
87 min
Across delayed arrivals only, not all flights
Cancelled
0.72%
National rate is 1.89%
1 hour+ late
6.9%
National rate is 8.3%
These figures cover 279 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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Schedule
When DL 2873 flies
DL 2873 flies AUS to SLC without a single fixed slot. Its most common scheduled departure was 12:25, used on 57 of 279 flights, with 12:00 (38 flights) and 11:56 (31 flights) next.
- Departs 12:2557 flights20.4%
- Departs 12:0038 flights13.6%
- Departs 11:5631 flights11.1%
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 12:25 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2873 runs 5 points better at 83.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2873 next to AUS to SLC
Every carrier on AUS to SLC combined arrived on time 81.1% of the time across 1,798 flights, so DL 2873 is 2 points ahead of it. Delta flew 1,072 flights on the same city pair under all its flight numbers, including this one, and those ran 86.0% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2873thin sample | 279 | 83.4% | 87 min | 0.72% | B+ |
| All Delta Air Lines on AUS–SLC | 1,072 | 86.0% | 94 min | 0.84% | A+ |
| All carriers on AUS–SLC | 1,798 | 81.1% | 76 min | 0.72% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2873 quarter by quarter
DL 2873 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 78.9%, a swing of 18 points on roughly 70 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202592 flights81.5%
- Jan–Mar 202690 flights78.9%
- Apr–Jun 202667 flights86.2%
Scale runs 70% to 100%.
By weekday, DL 2873 did best on Tuesday at 92.5% on time and worst on Friday at 74.4%. Each day rests on about 40 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2873 runs when it is late
DL 2873 often beats the schedule: 99 of 277 completed flights, 36%, arrived 15 minutes or more early. The 46 late arrivals split 12 under half an hour, 15 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early99 flights35.7%
- Within 15 min132 flights47.7%
- 15–29 min late12 flights4.3%
- 30–59 min late15 flights5.4%
- 1–2 hours late6 flights2.2%
- 2+ hours late13 flights4.7%
Scale runs 0% to 100%.
Share of 277 completed flights by arrival against schedule.
12 of 54 late departures made up the time and arrived on time, 22% of them. Only 4 left on time and still arrived late.
The worst days
Worst days for DL 2873
The latest arrival of the period was on 11 December 2025, 6 hours 38 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 |
|---|---|---|
| 11 December 2025 | 6 hours 38 minutes | Carrier |
| 1 October 2025 | 5 hours 42 minutes | Carrier |
| 9 January 2026 | 4 hours 15 minutes | Carrier |
| 2 November 2025 | 3 hours 26 minutes | Carrier |
| 8 December 2025 | 3 hours 17 minutes | Late-arriving aircraft |
Delay causes
Why DL 2873 runs late
Carrier accounts for 48% of the 3,986 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 45%Late-arriving aircraft
- 6%National Airspace System
- 2%Extreme weather
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,986 reported delay minutes here, that single category outweighs weather by 28 to one. The split is drawn from 3,986 delay minutes reported on DL 2873.
Cancellations are rare at 0.72%, 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 routes
What a delay on this flight costs
6.9% 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 an hour and a half, which a normal layover absorbs.
The 1,086 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.
The same number turns up on one other city pair in the data, including DFW to MSP (67), but none flew often enough under DL 2873 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to AUS to SLC only.
One caution: this is a thin sample. 279 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 2873
For a booking, read DL 2873 as 83.4% on time with 0.72% cancelled over 279 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- AUS to SLC, every carrier and departure
- SLC to AUS, the return direction
- Delta Air Lines 2618 on the same route94.5%
- Austin-Bergstrom International (AUS) delay statistics
- Salt Lake City International (SLC) 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
- Why the first flight of the morning is statistically safest
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.