Flight number record

DL 2317

Delta Air Lines · Salt Lake City to Nashville

Route: SLC → BNA
Departs: 17:45
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2317, check with Delta Air Lines.

DL 2317 lands a B+, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 363 flights, with a median arrival 8 minutes early.

On time

80.6%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

55 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

5.3%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 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.

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 121 of 363 flights, with 18:15 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:45121 flights33.3%
Departs 18:1538 flights10.5%

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 17:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 2317 runs 12 points better at 80.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 2317 next to SLC to BNA

Every carrier on SLC to BNA combined arrived on time 85.8% of the time across 1,205 flights, so DL 2317 is 5 points behind it. Delta flew 933 flights on the same city pair under all its flight numbers, including this one, and those ran 85.4% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 2317 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2317thin sample	363	80.6%	55 min	0.55%	B+
All Delta Air Lines on SLC–BNA	933	85.4%	52 min	0.54%	A+
All carriers on SLC–BNA	1,205	85.8%	51 min	0.58%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 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 flights76.1%
Oct–Dec 202590 flights84.4%
Jan–Mar 202690 flights87.5%
Apr–Jun 202691 flights74.7%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2317 ranged from 74.5% on Thursday to 84.6% on Wednesday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2317 runs late

One category carries most of the weight here. Carrier accounts for 52% of the 3,855 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.

Carrier
52%
Late-arriving aircraft
27%
National Airspace System
21%
Extreme weather
0%

The largest share of delay minutes, 52%, 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 1,992 of the 3,855 delay minutes reported here. The split is drawn from 3,855 delay minutes reported on DL 2317.

Cancellations are rare at 0.55%, 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

5.3% 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 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. 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 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, DL 2317 is one of the weaker ways to fly SLC to BNA: 5 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

Where to go next

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.

Key figures