Flight number record
DL 902
Delta Air Lines · Salt Lake City to San Francisco
- Route
- SLC → SFO
- Departs
- 11:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 902, check with Delta Air Lines.
DL 902 draws a D+. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is about 45 minutes behind schedule. Build slack into anything you connect to. That rests on 365 flights, with a median arrival 8 minutes late.
The national on-time rate over the same period is 77.3%, so DL 902 runs 18 points behind the country as a whole. Across a thousand flights that is about 175 extra late arrivals.
Key figures
On time
59.8%
Arrivals under 15 minutes late, of 363 completed flights
Avg delay
45 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
8.5%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 902 flies
DL 902 flies SLC to SFO without a single fixed slot. Its most common scheduled departure was 11:00, used on 76 of 365 flights, with 11:20 (70 flights) and 11:10 (57 flights) next.
- Departs 11:0076 flights20.8%
- Departs 11:2070 flights19.2%
- Departs 11:1057 flights15.6%
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 11:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 902 runs 19 points worse at 59.8%. 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 902 next to SLC to SFO
Every carrier on SLC to SFO combined arrived on time 63.4% of the time across 3,433 flights, so DL 902 is 4 points behind it. Delta flew 1,712 flights on the same city pair under all its flight numbers, including this one, and those ran 61.6% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 21 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 902 | 365 | 59.8% | 45 min | 0.27% | D+ |
| All Delta Air Lines on SLC–SFO | 1,712 | 61.6% | 52 min | 0.93% | D+ |
| All carriers on SLC–SFO | 3,433 | 63.4% | 63 min | 0.99% | D+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 902 quarter by quarter
DL 902 did not run the same all year. Its best quarter was Jul–Sep 2025 at 80.0% on time and its weakest Jul–Sep 2026 at 32.3%, a swing of 48 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 flights80.0%
- Oct–Dec 202592 flights65.2%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights46.7%
- Jul–Sep 202662 flights32.3%
Scale runs 25% to 85%.
By weekday, DL 902 did best on Saturday at 69.2% on time and worst on Wednesday at 51.9%. Each day rests on about 52 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 902 runs when it is late
The 146 late arrivals split 63 under half an hour, 52 between 30 and 60 minutes, and 31 an hour or more.
- 15+ min early35 flights9.6%
- Within 15 min182 flights50.1%
- 15–29 min late63 flights17.4%
- 30–59 min late52 flights14.3%
- 1–2 hours late24 flights6.6%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 363 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 97 departures that left 15 minutes late or more, only 8 made it up before arrival. In the other direction, 57 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SFO.
The worst days
Worst days for DL 902
The latest arrival of the period was on 17 March 2026, 3 hours 52 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across March, July, February and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 March 2026 | 3 hours 52 minutes | Late-arriving aircraft |
| 29 July 2026 | 2 hours 55 minutes | Late-arriving aircraft |
| 18 February 2026 | 2 hours 39 minutes | National Airspace System |
| 25 June 2026 | 2 hours 19 minutes | Carrier |
| 25 March 2026 | 2 hours 16 minutes | Carrier |
Delay causes
Why DL 902 runs late
National Airspace System accounts for 72% of the 6,563 delay minutes carriers reported here, and the remaining four split what is left.
- 72%National Airspace System
- 15%Late-arriving aircraft
- 13%Carrier
- 0%Extreme weather
72% 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 4,742 minutes out of 6,563, against a national NAS share of 21%. The split is drawn from 6,563 delay minutes reported on DL 902.
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
8.5% 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 about 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.
DL 902 is not only a SLC to SFO flight. It also flew SFO to SLC (287 flights, 65.4% 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 | 287 | 65.4% | 54 min | 0.35% | C+ |
What to do with this
Booking DL 902
For a booking, read DL 902 as 59.8% 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 route63.0%
- Delta Air Lines 920 on the same route63.9%
- Delta Air Lines 1091 on the same route65.3%
- Delta Air Lines 2762 on the same route53.2%
- 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
- Connecting flights: how much buffer the data says you need
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.