Flight number record
DL 1185
Delta Air Lines · Santa Ana to Salt Lake City
- Route
- SNA → SLC
- Departs
- 07:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1185, check with Delta Air Lines.
DL 1185 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 about 2.4 hours. That rests on 365 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 1185's record is 14 points better than the US average of 77.3%. That gap is worth roughly 139 fewer late arrivals for every thousand flights.
Key figures
On time
91.2%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
145 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
4.7%
National rate is 8.3%
These figures cover 365 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 1185 flies
DL 1185 flies SNA to SLC without a single fixed slot. Its most common scheduled departure was 07:00, used on 184 of 365 flights, with 07:15 (48 flights) and 07:10 (42 flights) next.
- Departs 07:00184 flights50.4%
- Departs 07:1548 flights13.2%
- Departs 07:1042 flights11.5%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1185 runs level with that at 91.2%. 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 1185 next to SNA to SLC
Every carrier on SNA to SLC combined arrived on time 86.3% of the time across 1,859 flights, so DL 1185 is 5 points ahead of it. Delta flew 1,606 flights on the same city pair under all its flight numbers, including this one, and those ran 86.5% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1185 | 365 | 91.2% | 145 min | 0.27% | A+ |
| All Delta Air Lines on SNA–SLC | 1,606 | 86.5% | 99 min | 0.68% | A+ |
| All carriers on SNA–SLC | 1,859 | 86.3% | 97 min | 0.70% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1185 quarter by quarter
DL 1185 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.7% on time and its weakest Jul–Sep 2025 at 86.7%, a swing of 10 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 flights86.7%
- Oct–Dec 202592 flights89.1%
- Jan–Mar 202690 flights88.9%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights91.8%
Scale runs 80% to 100%.
By weekday, DL 1185 did best on Friday at 98.1% on time and worst on Monday at 84.9%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1185 runs when it is late
DL 1185 often beats the schedule: 96 of 364 completed flights, 26%, arrived 15 minutes or more early. When DL 1185 is late it tends to be very late: 17 of its 32 late arrivals were an hour or more behind, and 13 were two hours or more.
- 15+ min early96 flights26.4%
- Within 15 min236 flights64.8%
- 15–29 min late8 flights2.2%
- 30–59 min late7 flights1.9%
- 1–2 hours late4 flights1.1%
- 2+ hours late13 flights3.6%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
A late pushback is often recovered here: of 40 departures that left 15 minutes late or more, 12 still arrived on time. Only 4 left on time and still arrived late.
The worst days
Worst days for DL 1185
The latest arrival of the period was on 11 January 2026, 11 hours 11 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 January 2026 | 11 hours 11 minutes | Carrier |
| 25 June 2026 | 7 hours 32 minutes | Carrier |
| 26 July 2026 | 7 hours 15 minutes | Carrier |
| 20 October 2025 | 6 hours 9 minutes | Carrier |
| 8 January 2026 | 5 hours 49 minutes | Late-arriving aircraft |
Delay causes
Why DL 1185 runs late
Carrier accounts for 73% of the 4,635 delay minutes carriers reported here, and the remaining four split what is left.
- 73%Carrier
- 21%Late-arriving aircraft
- 6%National Airspace System
- 0%Extreme weather
The largest share of delay minutes, 73%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,392 of the 4,635 delay minutes reported here. The split is drawn from 4,635 delay minutes reported on DL 1185.
Cancellations are rare at 0.27%, 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 4.7% 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 588 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 1185 in the data flew SNA 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 1185
For a booking, DL 1185 has one of the better records a US domestic flight can show: 91.2% on time and 0.27% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SNA to SLC, every carrier and departure
- SLC to SNA, the return direction
- Delta Air Lines 1198 on the same route92.1%
- Delta Air Lines 1277 on the same route84.0%
- John Wayne Airport (SNA) 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.