Flight number record

DL 930

Delta Air Lines · San Antonio to Salt Lake City

Route: SAT → SLC
Departs: 12:40
Flights: 332
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 930, check with Delta Air Lines.

DL 930 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 332 flights, with a median arrival 7 minutes early.

On time

80.2%

Arrivals under 15 minutes late, of 328 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.90%

National rate is 1.81%

1 hour+ late

6.1%

National rate is 8.1%

These figures cover 332 flights between July 2025 and June 2026. The median arrival is 7 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 930 flies

DL 930 flies SAT to SLC without a single fixed slot. Its most common scheduled departure was 12:40, used on 59 of 332 flights, with 12:36 (55 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 12:4059 flights17.8%
Departs 12:3655 flights16.6%

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 12:40 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 930 runs level with that at 80.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 930 next to SAT to SLC

Every carrier on SAT to SLC combined arrived on time 86.6% of the time across 1,008 flights, so DL 930 is 6 points behind it. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 930 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 930thin sample	332	80.2%	56 min	0.90%	B+
All Delta Air Lines on SAT–SLC	1,008	86.6%	70 min	0.89%	A+
All carriers on SAT–SLC	1,008	86.6%	70 min	0.89%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 930 quarter by quarter

DL 930 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.7% on time and its weakest Oct–Dec 2025 at 75.0%, a swing of 12 points on roughly 83 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 flights76.9%
Oct–Dec 202580 flights75.0%
Jan–Mar 202683 flights82.9%
Apr–Jun 202677 flights86.7%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 930 did best on Sunday at 89.1% on time and worst on Saturday at 71.9%. Each day rests on about 47 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 930 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 64% of the 3,656 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.

Late-arriving aircraft
64%
Carrier
27%
National Airspace System
8%
Extreme weather
1%

64% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,656 reported delay minutes here, that single category outweighs weather by 61 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,656 delay minutes reported on DL 930.

Cancellations sit at 0.90% against a national 1.81%, which is ordinary. Diversions add another 0.30%.

Connections and routes

What a delay on this flight costs

6.1% 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 1,087 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.

The same number turns up on one other city pair in the data, including SFO to ATL (16), but none flew often enough under DL 930 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SAT to SLC only.

One caution: this is a thin sample. 332 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 930

For a booking, DL 930 is one of the weaker ways to fly SAT to SLC: 6 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