Flight number record
DL 2528
Delta Air Lines · San Antonio to Minneapolis
- Route
- SAT → MSP
- Departs
- 14:31
- Flights
- 321
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2528, check with Delta Air Lines.
DL 2528 lands a B+, about a point 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 321 flights, with a median arrival 7 minutes early.
Key figures
On time
78.4%
Arrivals under 15 minutes late, of 320 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
0.31%
National rate is 1.89%
1 hour+ late
5.9%
National rate is 8.3%
These figures cover 321 flights between September 2025 and August 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 321 flights.
- Departs 14:3158 flights18.1%
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 14:31 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2528 runs 7 points better at 78.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 2528 next to SAT to MSP
Every carrier on SAT to MSP combined arrived on time 86.0% of the time across 898 flights, so DL 2528 is 8 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2528thin sample | 321 | 78.4% | 57 min | 0.31% | B+ |
| All Delta Air Lines on SAT–MSP | 898 | 86.0% | 66 min | 1.22% | A |
| All carriers on SAT–MSP | 898 | 86.0% | 66 min | 1.22% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2528 quarter by quarter
Quarter by quarter DL 2528 held fairly steady: 80.5% in Oct–Dec 2025, 74.3% in Jan–Mar 2026, 82.0% in Apr–Jun 2026 and 79.0% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202522 flights—
- Oct–Dec 202577 flights80.5%
- Jan–Mar 202671 flights74.3%
- Apr–Jun 202689 flights82.0%
- Jul–Sep 202662 flights79.0%
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2528 did best on Friday at 87.2% on time and worst on Sunday at 63.0%. Each day rests on about 46 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2528 runs when it is late
DL 2528 often beats the schedule: 95 of 320 completed flights, 30%, arrived 15 minutes or more early. The 69 late arrivals split 29 under half an hour, 21 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early95 flights29.7%
- Within 15 min156 flights48.8%
- 15–29 min late29 flights9.1%
- 30–59 min late21 flights6.6%
- 1–2 hours late12 flights3.8%
- 2+ hours late7 flights2.2%
Scale runs 0% to 100%.
Share of 320 completed flights by arrival against schedule.
8 of 61 late departures made up the time and arrived on time, 13% of them. In the other direction, 16 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MSP.
The worst days
Worst days for DL 2528
The latest arrival of the period was on 18 March 2026, 8 hours 16 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across March, November, October, January and December, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 March 2026 | 8 hours 16 minutes | Carrier |
| 9 November 2025 | 3 hours 42 minutes | Carrier |
| 28 October 2025 | 3 hours 15 minutes | Extreme weather |
| 29 January 2026 | 3 hours | Late-arriving aircraft |
| 11 December 2025 | 2 hours 12 minutes | Late-arriving aircraft |
Delay causes
Why DL 2528 runs late
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 3,964 reported delay minutes.
- 42%Late-arriving aircraft
- 33%Carrier
- 21%National Airspace System
- 5%Extreme weather
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,964 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 3,964 delay minutes reported on DL 2528.
Cancellations are rare at 0.31%, 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
5.9% 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 1,097 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.
Every one of the 321 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. 321 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: 8 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.
Related
Where to go next
- SAT to MSP, every carrier and departure
- MSP to SAT, the return direction
- Delta Air Lines 2717 on the same route93.8%
- San Antonio International (SAT) delay statistics
- Minneapolis-St Paul International (MSP) 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
- Why the first flight of the morning is statistically safest
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.