Flight number record

DL 2528

Delta Air Lines · San Antonio to Minneapolis

Route: SAT → MSP
Departs: 14:31
Flights: 316
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2528, check with Delta Air Lines.

DL 2528 lands a B+, level with the national rate of 77.6%. Roughly 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 316 flights, with a median arrival 7 minutes early.

On time

77.8%

Arrivals under 15 minutes late, of 315 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.32%

National rate is 1.81%

1 hour+ late

7.0%

National rate is 8.1%

These figures cover 316 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 2528 flies

DL 2528 flies SAT to MSP without a single fixed slot. Its most common scheduled departure was 14:31, used on 58 of 316 flights, with 13:35 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:3158 flights18.4%
Departs 13:3541 flights13.0%

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 14:31 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2528 runs 5 points better at 77.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2528 next to SAT to MSP

Every carrier on SAT to MSP combined arrived on time 85.2% of the time across 892 flights, so DL 2528 is 7 points behind it. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 4 points.

DL 2528 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2528thin sample	316	77.8%	62 min	0.32%	B+
All Delta Air Lines on SAT–MSP	892	85.2%	72 min	1.35%	A
All carriers on SAT–MSP	892	85.2%	72 min	1.35%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2528 quarter by quarter

Quarter by quarter DL 2528 held fairly steady: 73.4% in Jul–Sep 2025, 80.5% in Oct–Dec 2025, 74.3% in Jan–Mar 2026 and 82.0% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202579 flights73.4%
Oct–Dec 202577 flights80.5%
Jan–Mar 202671 flights74.3%
Apr–Jun 202689 flights82.0%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2528 did best on Tuesday at 83.0% on time and worst on Sunday at 65.2%. Each day rests on about 45 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2528 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 44% of the 4,326 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
44%
Carrier
35%
National Airspace System
16%
Extreme weather
5%

44% 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 4,326 reported delay minutes here, that single category outweighs weather by 10 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 4,326 delay minutes reported on DL 2528.

Cancellations are rare at 0.32%, 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

7.0% 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 1,097 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 316 flights under DL 2528 in the data flew SAT to MSP. 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. 316 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 2528

For a booking, DL 2528 is one of the weaker ways to fly SAT to MSP: 7 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