Flight number record
DL 2618
Delta Air Lines · Austin to Salt Lake City
- Route
- AUS → SLC
- Departs
- 08:15
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2618, check with Delta Air Lines.
DL 2618 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 3.1 hours. That rests on 365 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 2618's record is 17 points better than the US average of 77.3%. That gap is worth roughly 172 fewer late arrivals for every thousand flights.
Key figures
On time
94.5%
Arrivals under 15 minutes late, of 363 completed flights
Avg delay
184 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
3.3%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 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.
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Schedule
When DL 2618 flies
DL 2618 flies AUS to SLC without a single fixed slot. Its most common scheduled departure was 08:15, used on 115 of 365 flights, with 08:10 (57 flights) and 08:05 (50 flights) next.
- Departs 08:15115 flights31.5%
- Departs 08:1057 flights15.6%
- Departs 08:0550 flights13.7%
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 08:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2618 runs 11 points better at 94.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 2618 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 2618 is 13 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 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2618 | 365 | 94.5% | 184 min | 0.55% | A+ |
| 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 2618 quarter by quarter
Quarter by quarter DL 2618 held fairly steady: 100.0% in Jul–Sep 2025, 97.8% in Oct–Dec 2025, 90.9% in Jan–Mar 2026, 92.3% in Apr–Jun 2026 and 95.2% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights100.0%
- Oct–Dec 202592 flights97.8%
- Jan–Mar 202690 flights90.9%
- Apr–Jun 202691 flights92.3%
- Jul–Sep 202662 flights95.2%
Scale runs 80% to 100%.
By weekday, DL 2618 ranged from 90.2% on Thursday to 100.0% on Monday. 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 2618 runs when it is late
DL 2618 often beats the schedule: 134 of 363 completed flights, 37%, arrived 15 minutes or more early. When DL 2618 is late it tends to be very late: 12 of its 20 late arrivals were an hour or more behind, and 9 were two hours or more.
- 15+ min early134 flights36.9%
- Within 15 min209 flights57.6%
- 15–29 min late6 flights1.7%
- 30–59 min late2 flights0.6%
- 1–2 hours late3 flights0.8%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 363 completed flights by arrival against schedule.
6 of 23 late departures made up the time and arrived on time, 26% of them. Only 3 left on time and still arrived late.
The worst days
Worst days for DL 2618
The latest arrival of the period was on 15 February 2026, 9 hours 15 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 February 2026 | 9 hours 15 minutes | Carrier |
| 8 November 2025 | 8 hours 11 minutes | Carrier |
| 20 December 2025 | 7 hours 19 minutes | Carrier |
| 7 May 2026 | 5 hours 28 minutes | Late-arriving aircraft |
| 26 February 2026 | 5 hours 24 minutes | Late-arriving aircraft |
Delay causes
Why DL 2618 runs late
Carrier accounts for 65% of the 3,674 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 17%Late-arriving aircraft
- 11%Extreme weather
- 8%National Airspace System
The largest share of delay minutes, 65%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,371 of the 3,674 delay minutes reported here. The split is drawn from 3,674 delay minutes reported on DL 2618.
Cancellations are rare at 0.55%, 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
Badly late arrivals are rare here: only 3.3% 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.
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.
Every one of the 365 flights under DL 2618 in the data flew AUS to SLC. 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. 365 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 2618
For a booking, DL 2618 has one of the better records a US domestic flight can show: 94.5% on time and 0.55% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- AUS to SLC, every carrier and departure
- SLC to AUS, the return direction
- Delta Air Lines 2873 on the same route83.4%
- 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
- 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.