Flight number record
DL 902
Delta Air Lines · Salt Lake City to San Francisco
- Route
- SLC → SFO
- Departs
- 11:20
- Flights
- 365
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 902, check with Delta Air Lines.
DL 902 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is roughly 45 minutes behind schedule. Build slack into anything you connect to. That rests on 365 flights, with a median arrival 5 minutes late.
The national on-time rate over the same period is 77.6%, so DL 902 runs 12 points behind the country as a whole. Across a thousand flights that is about 118 extra late arrivals.
Key figures
On time
65.8%
Arrivals under 15 minutes late, of 363 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.81%
1 hour+ late
6.9%
National rate is 8.1%
These figures cover 365 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
Schedule
When DL 902 flies
DL 902 flies SLC to SFO without a single fixed slot. Its most common scheduled departure was 11:20, used on 70 of 365 flights, with 11:10 (57 flights) and 11:00 (48 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 11:2070 flights19.2%
- Departs 11:1057 flights15.6%
- Departs 11:0048 flights13.2%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 11:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 902 runs 13 points worse at 65.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 902 next to SLC to SFO
Every carrier on SLC to SFO combined arrived on time 69.0% of the time across 3,472 flights, so DL 902 is 3 points behind it. Delta flew 1,706 flights on the same city pair under all its flight numbers, including this one, and those ran 67.4% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 902 | 365 | 65.8% | 43 min | 0.27% | C+ |
| All Delta Air Lines on SLC–SFO | 1,706 | 67.4% | 52 min | 0.88% | C+ |
| All carriers on SLC–SFO | 3,472 | 69.0% | 64 min | 0.95% | C+ |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 902 quarter by quarter
DL 902 did not run the same all year. Its best quarter was Jan–Mar 2026 at 79.8% on time and its weakest Apr–Jun 2026 at 46.7%, a swing of 33 points on roughly 91 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 202592 flights71.7%
- Oct–Dec 202592 flights65.2%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights46.7%
Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 902 did best on Saturday at 80.8% on time and worst on Wednesday at 55.8%. Each day rests on about 52 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 902 runs late
One category carries most of the weight here. National Airspace System accounts for 69% of the 5,377 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 69%National Airspace System
- 17%Late-arriving aircraft
- 14%Carrier
69% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,726 minutes out of 5,377, against a national NAS share of 21%. The split is drawn from 5,377 delay minutes reported on DL 902.
Cancellations are rare at 0.27%, below the national 1.81% 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 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 45 minutes, which a normal layover absorbs.
The 599 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
DL 902 is not only a SLC to SFO flight. It also flew SFO to SLC (317 flights, 67.7% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SFO to SLCthin sample | 317 | 67.7% | 47 min | 0.32% | C+ |
What to do with this
Booking DL 902
For a booking, read DL 902 as 65.8% on time with 0.27% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SLC to SFO, every carrier and departure
- SFO to SLC, the return direction
- Delta Air Lines 1088 on the same route67.9%
- Delta Air Lines 920 on the same route67.7%
- Delta Air Lines 1091 on the same route69.8%
- Delta Air Lines 2762 on the same route64.7%
- Salt Lake City International (SLC) delay statistics
- San Francisco International (SFO) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.