Flight number record

DL 1133

Delta Air Lines · Detroit to Orlando

Route: DTW → MCO
Departs: 16:56
Flights: 302
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1133, check with Delta Air Lines.

DL 1133 draws a D. Roughly one flight in two 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 302 flights, with a median arrival 5 minutes late.

The national on-time rate over the same period is 77.6%, so DL 1133 runs 18 points behind the country as a whole. Across a thousand flights that is about 181 extra late arrivals.

On time

59.5%

Arrivals under 15 minutes late, of 294 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

1.99%

National rate is 1.81%

1 hour+ late

12.9%

National rate is 8.1%

These figures cover 302 flights between July 2025 and June 2026. Beyond the headline rate, 12.9% 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 1133 flies

DL 1133 flies DTW to MCO without a single fixed slot. Its most common scheduled departure was 16:56, used on 45 of 302 flights, with 16:10 (39 flights) and 18:00 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:5645 flights14.9%
Departs 16:1039 flights12.9%
Departs 18:0038 flights12.6%

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 16:56 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 1133 runs 13 points worse at 59.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1133 next to DTW to MCO

Every carrier on DTW to MCO combined arrived on time 75.6% of the time across 3,680 flights, so DL 1133 is 16 points behind it. Delta flew 2,170 flights on the same city pair under all its flight numbers, including this one, and those ran 74.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 22 points.

DL 1133 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1133thin sample	302	59.5%	65 min	1.99%	D
All Delta Air Lines on DTW–MCO	2,170	74.6%	71 min	0.92%	C+
All carriers on DTW–MCO	3,680	75.6%	73 min	0.95%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1133 quarter by quarter

DL 1133 did not run the same all year. Its best quarter was Apr–Jun 2026 at 69.1% on time and its weakest Jan–Mar 2026 at 48.3%, a swing of 21 points on roughly 76 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 202588 flights55.2%
Oct–Dec 202571 flights63.2%
Jan–Mar 202662 flights48.3%
Apr–Jun 202681 flights69.1%

Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1133 did best on Wednesday at 72.3% on time and worst on Saturday at 45.7%. Each day rests on about 43 flights, so a gap of 27 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1133 runs late

One category carries most of the weight here. Carrier accounts for 42% of the 7,764 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
42%
Late-arriving aircraft
29%
National Airspace System
28%
Extreme weather
1%

The largest share of delay minutes, 42%, 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 3,295 of the 7,764 delay minutes reported here. The split is drawn from 7,764 delay minutes reported on DL 1133.

Cancellations sit at 1.99% against a national 1.81%, which is ordinary. Diversions add another 0.66%.

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. 12.9% 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 957 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.

The same number turns up on five other city pairs in the data, including MCO to DTW (136), ATL to CAE (19) and CAE to ATL (19), but none flew often enough under DL 1133 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to MCO only.

One caution: this is a thin sample. 302 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 1133

For a booking, DL 1133 is a flight to put a long connection behind. 12.9% 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