Carrier route record
DLMSP→MIA
Delta Air Lines · Minneapolis to Miami
- Flights
- 760
- Period
- September 2025 to August 2026
- Share of route
- 67%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on MSP to MIA lands a B+, 2 points 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 50 minutes on average. That rests on 760 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate Delta on MSP to MIA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.5%
Arrivals under 15 minutes late, of 752 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
0.79%
National rate is 1.89%
Whole route
83.2%
Every carrier on MSP to MIA, 1,140 flights
These figures cover 760 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.
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Carrier by carrier
Delta against every carrier on MSP to MIA
Delta flew 760 of the 1,140 flights on MSP to MIA, most of the route. Its 79.5% on time is 4 points worse than the route as a whole, which runs 83.2%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from American at 90.7% to Delta at 79.5%.
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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines | 380 | 90.7% | 120 min | 1.05% | A |
| Delta Air Lines (this page) | 760 | 79.5% | 50 min | 0.79% | B+ |
Flight by flight
Delta flight numbers on MSP to MIA
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Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 11 points, against half a point between the best and worst carrier.
- 5am–8am20 flights—
- 8am–11am366 flights85.3%
- 11am–2pm236 flights73.9%
- 2pm–5pm16 flights—
- 5pm–8pm121 flights75.0%
- 8pm–5am1 flights—
Scale runs 65% to 90%. 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 73.9% on time against 85.3% 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 366 flights scheduled in it.
Across the year
Delta on MSP to MIA through the year
December is the weak month at 57.4% on time, against 88.1% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. December was the busiest month here, with 71 flights.
Across the week, Tuesday is the strongest day at 86.8% on time and Sunday the weakest at 71.4%, a spread of 15 points.
Arrival by arrival
How late Delta on MSP to MIA runs when it is late
Delta on MSP to MIA often beats the schedule: 227 of 752 completed flights, 30%, arrived 15 minutes or more early. The 154 late arrivals split 65 under half an hour, 53 between 30 and 60 minutes, and 36 an hour or more.
- 15+ min early227 flights30.2%
- Within 15 min371 flights49.3%
- 15–29 min late65 flights8.6%
- 30–59 min late53 flights7.0%
- 1–2 hours late23 flights3.1%
- 2+ hours late13 flights1.7%
Scale runs 0% to 100%.
Share of 752 completed flights by arrival against schedule.
23 of 115 late departures made up the time and arrived on time, 20% of them. In the other direction, 62 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 MIA.
The worst days
Worst days for Delta on MSP to MIA
The latest arrival of the period was on 16 March 2026, 5 hours 1 minute behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 March 2026 | 5 hours 1 minute | National Airspace System |
| 24 January 2026 | 3 hours 44 minutes | Extreme weather |
| 1 July 2026 | 2 hours 55 minutes | Extreme weather |
| 28 December 2025 | 2 hours 54 minutes | National Airspace System |
| 16 March 2026 | 2 hours 48 minutes | National Airspace System |
Delay causes
Why Delta runs late on this route
National Airspace System accounts for 48% of the 7,624 delay minutes carriers reported here, and the remaining four split what is left.
- 48%National Airspace System
- 31%Carrier
- 13%Late-arriving aircraft
- 8%Extreme weather
48% 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 3,640 minutes out of 7,624, against a national NAS share of 21%. The split is drawn from 7,624 reported delay minutes.
Cancellations are rare at 0.79%, 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 stage length
What a delay here costs
Badly late arrivals are rare here: only 4.8% 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 1,501 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 runs 77.6% on time across 759 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 760 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 MSP to MIA
Put together: treat all of this as provisional. 760 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 79.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 752 completed flights over 12 months sit behind that.
Related
Where to go next
- MSP to MIA, every carrier
- Delta on MIA to MSP, the return leg
- American Airlines on MSP to MIA90.7%
- Delta Air Lines network-wide record
- Minneapolis-St Paul International (MSP) delay statistics
- Miami International (MIA) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
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.