Flight number record

DL 1484

Delta Air Lines · Minneapolis to Detroit

Route: MSP → DTW
Departs: 19:45
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1484, check with Delta Air Lines.

DL 1484 draws a D+. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 364 flights, with a median arrival 3 minutes late.

The national on-time rate over the same period is 77.6%, so DL 1484 runs 17 points behind the country as a whole. Across a thousand flights that is about 167 extra late arrivals.

On time

60.9%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

14.7%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 14.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 265 of 364 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:45265 flights72.8%

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 19:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 1484 runs 7 points worse at 60.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 1484 next to MSP to DTW

Every carrier on MSP to DTW combined arrived on time 82.3% of the time across 1,932 flights, so DL 1484 is 21 points behind it. Delta flew 1,887 flights on the same city pair under all its flight numbers, including this one, and those ran 82.1% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 21 points.

DL 1484 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1484thin sample	364	60.9%	76 min	0.55%	D+
All Delta Air Lines on MSP–DTW	1,887	82.1%	65 min	0.53%	B+
All carriers on MSP–DTW	1,932	82.3%	66 min	0.52%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 42.4%, a swing of 32 points on roughly 91 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 202592 flights42.4%
Oct–Dec 202591 flights60.4%
Jan–Mar 202690 flights66.7%
Apr–Jun 202691 flights74.7%

Scale runs 35% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1484 did best on Wednesday at 69.2% on time and worst on Sunday at 55.8%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1484 runs late

One category carries most of the weight here. Carrier accounts for 66% of the 11,000 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.

Carrier
66%
Late-arriving aircraft
14%
National Airspace System
11%
Extreme weather
8%
Security
0%

The largest share of delay minutes, 66%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 7,142 of the 11,000 delay minutes reported here. The split is drawn from 10,779 delay minutes reported on DL 1484.

Cancellations are rare at 0.55%, 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 14.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 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 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 a flight to put a long connection behind. 14.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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