Flight number record
DL 2236
Delta Air Lines · Salt Lake City to Detroit
- Route
- SLC → DTW
- Departs
- 09:45
- Flights
- 365
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2236, check with Delta Air Lines.
DL 2236 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 365 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 2236's record is 16 points better than the US average of 77.6%. That gap is worth roughly 155 fewer late arrivals for every thousand flights.
Key figures
On time
93.1%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
38 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
1 hour+ late
1.4%
National rate is 8.1%
These figures cover 365 flights between July 2025 and June 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.
Schedule
When DL 2236 flies
DL 2236 flies SLC to DTW without a single fixed slot. Its most common scheduled departure was 09:45, used on 59 of 365 flights, with 09:40 (46 flights) and 09:42 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 09:4559 flights16.2%
- Departs 09:4046 flights12.6%
- Departs 09:4238 flights10.4%
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 09:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 2236 runs 9 points better at 93.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
DL 2236 next to SLC to DTW
Every carrier on SLC to DTW combined arrived on time 89.5% of the time across 1,567 flights, so DL 2236 is 4 points ahead of it. Delta flew 1,539 flights on the same city pair under all its flight numbers, including this one, and those ran 89.4% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2236 | 365 | 93.1% | 38 min | 0.00% | A+ |
| All Delta Air Lines on SLC–DTW | 1,539 | 89.4% | 61 min | 0.19% | A+ |
| All carriers on SLC–DTW | 1,567 | 89.5% | 64 min | 0.19% | A+ |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2236 quarter by quarter
Quarter by quarter DL 2236 held fairly steady: 86.8% in Jul–Sep 2025, 93.5% in Oct–Dec 2025, 95.6% in Jan–Mar 2026 and 96.7% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights86.8%
- Oct–Dec 202592 flights93.5%
- Jan–Mar 202690 flights95.6%
- Apr–Jun 202691 flights96.7%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2236 ranged from 88.5% on Saturday to 100.0% on Thursday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why DL 2236 runs late
One category carries most of the weight here. Carrier accounts for 44% of the 948 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.
- 44%Carrier
- 31%National Airspace System
- 26%Late-arriving aircraft
The largest share of delay minutes, 44%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 413 of the 948 delay minutes reported here. The split is drawn from 948 delay minutes reported on DL 2236.
Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are 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 1.4% land an hour or more behind schedule, against 8.1% 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 1,481 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.
Every one of the 365 flights under DL 2236 in the data flew SLC to DTW. 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 2236
For a booking, DL 2236 has one of the better records a US domestic flight can show: 93.1% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to DTW, every carrier and departure
- DTW to SLC, the return direction
- Delta Air Lines 2289 on the same route94.5%
- Delta Air Lines 2244 on the same route88.4%
- Delta Air Lines 2255 on the same route81.8%
- Salt Lake City International (SLC) delay statistics
- Detroit Metropolitan Wayne County (DTW) 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.