Flight number record
DL 2125
Delta Air Lines · Minneapolis to San Diego
- Route
- MSP → SAN
- Departs
- 11:38
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2125, check with Delta Air Lines.
DL 2125 lands a B+, level with the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 365 flights, with a median arrival 5 minutes early.
Key figures
On time
78.0%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
4.7%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 5 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.
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Schedule
When DL 2125 flies
DL 2125 flies MSP to SAN without a single fixed slot. Its most common scheduled departure was 11:38, used on 49 of 365 flights, with 11:09 (41 flights) next.
- Departs 11:3849 flights13.4%
- Departs 11:0941 flights11.2%
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 11:38 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2125 runs level with that at 78.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2125 next to MSP to SAN
Every carrier on MSP to SAN combined arrived on time 77.6% of the time across 1,300 flights, so DL 2125 is about level with 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 2125 | 365 | 78.0% | 42 min | 0.27% | B+ |
| All Delta Air Lines on MSP–SAN | 1,300 | 77.6% | 46 min | 0.85% | B+ |
| All carriers on MSP–SAN | 1,300 | 77.6% | 46 min | 0.85% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2125 quarter by quarter
DL 2125 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Oct–Dec 2025 at 65.2%, a swing of 25 points on roughly 73 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 202530 flights90.0%
- Oct–Dec 202592 flights65.2%
- Jan–Mar 202690 flights84.3%
- Apr–Jun 202691 flights87.9%
- Jul–Sep 202662 flights67.7%
Scale runs 55% to 95%.
By weekday, DL 2125 did best on Wednesday at 86.5% on time and worst on Friday at 67.3%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2125 runs when it is late
DL 2125 often beats the schedule: 95 of 364 completed flights, 26%, arrived 15 minutes or more early. The 80 late arrivals split 37 under half an hour, 26 between 30 and 60 minutes, and 17 an hour or more. Not one arrived two hours late.
- 15+ min early95 flights26.1%
- Within 15 min189 flights51.9%
- 15–29 min late37 flights10.2%
- 30–59 min late26 flights7.1%
- 1–2 hours late17 flights4.7%
- 2+ hours late0 flights0.0%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
12 of 62 late departures made up the time and arrived on time, 19% of them. In the other direction, 30 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 SAN.
The worst days
Worst days for DL 2125
The latest arrival of the period was on 18 September 2025, 1 hour 41 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across September, January, July and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 September 2025 | 1 hour 41 minutes | National Airspace System |
| 18 January 2026 | 1 hour 39 minutes | Late-arriving aircraft |
| 23 January 2026 | 1 hour 39 minutes | Extreme weather |
| 17 July 2026 | 1 hour 34 minutes | Carrier |
| 16 May 2026 | 1 hour 33 minutes | Carrier |
Delay causes
Why DL 2125 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 3,323 reported delay minutes.
- 37%National Airspace System
- 33%Carrier
- 28%Late-arriving aircraft
- 2%Extreme weather
37% 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 1,236 minutes out of 3,323, against a national NAS share of 21%. The split is drawn from 3,323 delay minutes reported on DL 2125.
Cancellations are rare at 0.27%, 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
Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% 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 1,532 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 same number turns up on one other city pair in the data, including SAN to MSP (84), but none flew often enough under DL 2125 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MSP to SAN only.
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 DL 2125
For a booking, read DL 2125 as 78.0% on time with 0.27% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MSP to SAN, every carrier and departure
- SAN to MSP, the return direction
- Delta Air Lines 2145 on the same route70.8%
- Delta Air Lines 2121 on the same route82.2%
- Minneapolis-St Paul International (MSP) delay statistics
- San Diego International (SAN) 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
- Worst months to fly in the US, ranked by the data
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.