Flight number record
DL 2317
Delta Air Lines · Salt Lake City to Nashville
- Route
- SLC → BNA
- Departs
- 17:45
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2317, check with Delta Air Lines.
DL 2317 lands a B+, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 363 flights, with a median arrival 8 minutes early.
Key figures
On time
81.2%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
6.6%
National rate is 8.3%
These figures cover 363 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 2317 flies
DL 2317 flies SLC to BNA without a single fixed slot. Its most common scheduled departure was 17:45, used on 110 of 363 flights, with 18:45 (43 flights) and 18:15 (38 flights) next.
- Departs 17:45110 flights30.3%
- Departs 18:4543 flights11.8%
- Departs 18:1538 flights10.5%
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 17:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 2317 runs 13 points better at 81.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 2317 next to SLC to BNA
Every carrier on SLC to BNA combined arrived on time 85.0% of the time across 1,205 flights, so DL 2317 is 4 points behind it. Delta flew 933 flights on the same city pair under all its flight numbers, including this one, and those ran 85.0% on time. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2317thin sample | 363 | 81.2% | 62 min | 0.55% | B+ |
| All Delta Air Lines on SLC–BNA | 933 | 85.0% | 55 min | 0.54% | A+ |
| All carriers on SLC–BNA | 1,205 | 85.0% | 52 min | 0.58% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2317 quarter by quarter
DL 2317 did not run the same all year. Its best quarter was Jan–Mar 2026 at 87.5% on time and its weakest Apr–Jun 2026 at 74.7%, a swing of 13 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 flights83.3%
- Oct–Dec 202590 flights84.4%
- Jan–Mar 202690 flights87.5%
- Apr–Jun 202691 flights74.7%
- Jul–Sep 202662 flights75.8%
Scale runs 65% to 95%.
By weekday, DL 2317 ranged from 77.4% on Monday to 86.3% on Saturday. With about 52 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2317 runs when it is late
DL 2317 often beats the schedule: 128 of 361 completed flights, 35%, arrived 15 minutes or more early. The 68 late arrivals split 24 under half an hour, 20 between 30 and 60 minutes, and 24 an hour or more.
- 15+ min early128 flights35.5%
- Within 15 min165 flights45.7%
- 15–29 min late24 flights6.6%
- 30–59 min late20 flights5.5%
- 1–2 hours late13 flights3.6%
- 2+ hours late11 flights3.0%
Scale runs 0% to 100%.
Share of 361 completed flights by arrival against schedule.
22 of 76 late departures made up the time and arrived on time, 29% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for DL 2317
The latest arrival of the period was on 15 March 2026, 3 hours 24 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across March, February, August and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 March 2026 | 3 hours 24 minutes | National Airspace System |
| 17 March 2026 | 3 hours 7 minutes | Late-arriving aircraft |
| 18 February 2026 | 2 hours 51 minutes | Carrier |
| 28 August 2026 | 2 hours 42 minutes | Carrier |
| 7 July 2026 | 2 hours 38 minutes | Late-arriving aircraft |
Delay causes
Why DL 2317 runs late
Carrier accounts for 49% of the 4,223 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 29%Late-arriving aircraft
- 19%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,054 of the 4,223 delay minutes reported here. The split is drawn from 4,223 delay minutes reported on DL 2317.
Cancellations are rare at 0.55%, 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
6.6% 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 an hour, which a normal layover absorbs.
The 1,404 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 363 flights under DL 2317 in the data flew SLC to BNA. 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. 363 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 2317
For a booking, read DL 2317 as 81.2% on time with 0.55% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SLC to BNA, every carrier and departure
- BNA to SLC, the return direction
- Delta Air Lines 2214 on the same route89.2%
- Salt Lake City International (SLC) delay statistics
- Nashville International (BNA) 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.