Flight number record
DL 1484
Delta Air Lines · Minneapolis to Detroit
- Route
- MSP → DTW
- Departs
- 19:45
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1484, check with Delta Air Lines.
DL 1484 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 364 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so DL 1484 runs 11 points behind the country as a whole. Across a thousand flights that is about 111 extra late arrivals.
Key figures
On time
66.2%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
11.4%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. Beyond the headline rate, 11.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1484 flies
DL 1484 flies MSP to DTW without a single fixed slot. Its most common scheduled departure was 19:45, used on 203 of 364 flights, with 19:46 (57 flights) next.
- Departs 19:45203 flights55.8%
- Departs 19:4657 flights15.7%
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 19:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 1484 runs level with that at 66.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 1484 next to MSP to DTW
Every carrier on MSP to DTW combined arrived on time 82.7% of the time across 1,884 flights, so DL 1484 is 17 points behind it. Delta flew 1,881 flights on the same city pair under all its flight numbers, including this one, and those ran 82.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1484thin sample | 364 | 66.2% | 64 min | 0.55% | C+ |
| All Delta Air Lines on MSP–DTW | 1,881 | 82.8% | 59 min | 0.58% | B+ |
| All carriers on MSP–DTW | 1,884 | 82.7% | 59 min | 0.58% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1484 quarter by quarter
DL 1484 did not run the same all year. Its best quarter was Apr–Jun 2026 at 74.7% on time and its weakest Jul–Sep 2025 at 43.3%, a swing of 31 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 flights43.3%
- Oct–Dec 202591 flights60.4%
- Jan–Mar 202690 flights66.7%
- Apr–Jun 202691 flights74.7%
- Jul–Sep 202662 flights72.6%
Scale runs 35% to 80%.
By weekday, DL 1484 did best on Wednesday at 75.0% on time and worst on Sunday at 57.7%. Each day rests on about 52 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1484 runs when it is late
DL 1484 often beats the schedule: 93 of 361 completed flights, 26%, arrived 15 minutes or more early. The 122 late arrivals split 37 under half an hour, 44 between 30 and 60 minutes, and 41 an hour or more.
- 15+ min early93 flights25.8%
- Within 15 min146 flights40.4%
- 15–29 min late37 flights10.2%
- 30–59 min late44 flights12.2%
- 1–2 hours late27 flights7.5%
- 2+ hours late14 flights3.9%
Scale runs 0% to 100%.
Share of 361 completed flights by arrival against schedule.
16 of 124 late departures made up the time and arrived on time, 13% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for DL 1484
The latest arrival of the period was on 28 July 2026, 10 hours 43 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 July 2026 | 10 hours 43 minutes | Carrier |
| 25 September 2025 | 4 hours 36 minutes | Carrier |
| 18 February 2026 | 4 hours | Carrier |
| 14 October 2025 | 2 hours 57 minutes | Carrier |
| 28 December 2025 | 2 hours 38 minutes | Carrier |
Delay causes
Why DL 1484 runs late
Carrier accounts for 65% of the 7,766 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 14%Late-arriving aircraft
- 14%National Airspace System
- 6%Extreme weather
- 0%Security
The largest share of delay minutes, 65%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 5,085 of the 7,766 delay minutes reported here. The split is drawn from 7,766 delay minutes reported on DL 1484.
Cancellations are rare at 0.55%, 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
11.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 528 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 364 flights under DL 1484 in the data flew MSP to DTW. 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. 364 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 1484
For a booking, DL 1484 is one of the weaker ways to fly MSP to DTW: 17 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
- MSP to DTW, every carrier and departure
- DTW to MSP, the return direction
- Delta Air Lines 1461 on the same route93.6%
- Delta Air Lines 1476 on the same route78.8%
- Delta Air Lines 1519 on the same route89.3%
- Delta Air Lines 1433 on the same route88.1%
- Minneapolis-St Paul International (MSP) delay statistics
- Detroit Metropolitan Wayne County (DTW) 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
- The best time of day to fly, according to 7.05 million flight records
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.