Carrier route record

DLSLC→CLT

Delta Air Lines · Salt Lake City to Charlotte

Flights: 365
Period: July 2025 to June 2026
Share of route: 40%
Carriers: 2

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

Delta on SLC to CLT earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 35 minutes. That rests on 365 flights, with a median arrival 8 minutes early.

Set against the rest of the country, Delta's SLC to CLT record is 9 points better than the US average of 77.6%. That gap is worth roughly 94 fewer late arrivals for every thousand flights.

On time

87.0%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

33 min

Across delayed arrivals only, not all flights

Cancelled

1.10%

National rate is 1.81%

Whole route

84.3%

Every carrier on SLC to CLT, 921 flights

These figures cover 365 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.

Carrier by carrier

Delta against every carrier on SLC to CLT

Delta flew 365 of the 921 flights on SLC to CLT, about 40% of it. Its 87.0% on time is 3 points better than the route as a whole, which runs 84.3%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Delta at 87.0% to American at 82.5%.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on SLC to CLT
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines (this page)	365	87.0%	33 min	1.10%	A
American Airlines	556	82.5%	89 min	0.90%	B+

Flight by flight

Delta flight numbers on SLC to CLT

DL 207010:2587.0% · 365 flights

Departure window

When Delta runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 365 flights.

5am–8am—
8am–11am328 flights87.7%
11am–2pm37 flights81.1%
2pm–5pm—
5pm–8pm—
8pm–5am—

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 81.1% on time against 87.7% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8am–11am window is the busiest, with 328 flights scheduled in it.

Across the year

Delta on SLC to CLT through the year

Darker means more delays. Figures are on-time percentages.November best, September worst

November is the best month on the calendar at 96.7% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. March was the busiest month here, with 31 flights.

Across the week, Wednesday is the strongest day at 94.2% on time and Friday the weakest at 78.8%. 15 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Delta runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,559 reported delay minutes.

Carrier
38%
National Airspace System
35%
Late-arriving aircraft
27%

35% 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 551 minutes out of 1,559, against a national NAS share of 21%. The split is drawn from 1,559 reported delay minutes.

The largest share of delay minutes, 38%, 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 586 of the 1,559 delay minutes reported here.

Cancellations sit at 1.10% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 1.9% 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.

At 1,727 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 83.4% on time across 365 flights, 4 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.

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 Delta on SLC to CLT

Put together: treat all of this as provisional. 365 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 87.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 361 completed flights over 12 months sit behind that.

Where to go next

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