Flight number record
DL 1318
Delta Air Lines · Los Angeles to Salt Lake City
- Route
- LAX → SLC
- Departs
- 07:15
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1318, check with Delta Air Lines.
DL 1318 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 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 365 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 1318's record is 14 points better than the US average of 77.3%. That gap is worth roughly 144 fewer late arrivals for every thousand flights.
Key figures
On time
91.7%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
105 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
3.9%
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 1318 flies
DL 1318 flies LAX to SLC without a single fixed slot. Its most common scheduled departure was 07:15, used on 109 of 365 flights, with 07:00 (103 flights) and 07:35 (91 flights) next.
- Departs 07:15109 flights29.9%
- Departs 07:00103 flights28.2%
- Departs 07:3591 flights24.9%
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 07:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1318 runs 2 points better at 91.7%. 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 1318 next to LAX to SLC
Every carrier on LAX to SLC combined arrived on time 87.2% of the time across 4,195 flights, so DL 1318 is 5 points ahead of it. Delta flew 2,457 flights on the same city pair under all its flight numbers, including this one, and those ran 88.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1318 | 365 | 91.7% | 105 min | 1.37% | A |
| All Delta Air Lines on LAX–SLC | 2,457 | 88.4% | 80 min | 0.53% | A+ |
| All carriers on LAX–SLC | 4,195 | 87.2% | 72 min | 0.50% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1318 quarter by quarter
DL 1318 did not run the same all year. Its best quarter was Oct–Dec 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 79.8%, a swing of 17 points on roughly 73 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 flights90.0%
- Oct–Dec 202592 flights96.7%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights95.0%
Scale runs 70% to 100%.
By weekday, DL 1318 did best on Thursday at 100.0% on time and worst on Saturday at 86.5%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1318 runs when it is late
DL 1318 often beats the schedule: 126 of 360 completed flights, 35%, arrived 15 minutes or more early. The 30 late arrivals split 9 under half an hour, 7 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early126 flights35.0%
- Within 15 min204 flights56.7%
- 15–29 min late9 flights2.5%
- 30–59 min late7 flights1.9%
- 1–2 hours late7 flights1.9%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
9 of 33 late departures made up the time and arrived on time, 27% of them. Only 6 left on time and still arrived late.
The worst days
Worst days for DL 1318
The latest arrival of the period was on 3 November 2025, 10 hours 41 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 November 2025 | 10 hours 41 minutes | Carrier |
| 28 January 2026 | 8 hours 47 minutes | Carrier |
| 3 March 2026 | 5 hours 55 minutes | Carrier |
| 14 April 2026 | 3 hours 9 minutes | Carrier |
| 18 January 2026 | 2 hours 57 minutes | Carrier |
Delay causes
Why DL 1318 runs late
Carrier accounts for 87% of the 3,163 delay minutes carriers reported here, and the remaining four split what is left.
- 87%Carrier
- 9%Late-arriving aircraft
- 4%National Airspace System
The largest share of delay minutes, 87%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,758 of the 3,163 delay minutes reported here. The split is drawn from 3,163 delay minutes reported on DL 1318.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.9% 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 590 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 1318 in the data flew LAX 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 1318
For a booking, DL 1318 has one of the better records a US domestic flight can show: 91.7% on time and 1.37% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAX to SLC, every carrier and departure
- SLC to LAX, the return direction
- Delta Air Lines 1647 on the same route85.4%
- Delta Air Lines 1194 on the same route88.5%
- Delta Air Lines 1434 on the same route92.0%
- Delta Air Lines 2311 on the same route78.7%
- Delta Air Lines 2906 on the same route95.4%
- Delta Air Lines 1483 on the same route86.6%
- Los Angeles International (LAX) 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.