Flight number record

DL 1312

Delta Air Lines · Orlando to Raleigh

Route: MCO → RDU
Departs: 15:25
Flights: 276
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1312, check with Delta Air Lines.

DL 1312 lands a B, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 276 flights, with a median arrival 8 minutes early.

On time

76.9%

Arrivals under 15 minutes late, of 273 completed flights

Avg delay

93 min

Across delayed arrivals only, not all flights

Cancelled

1.09%

National rate is 1.81%

1 hour+ late

9.5%

National rate is 8.1%

These figures cover 276 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% 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 1312 flies

DL 1312 flies MCO to RDU without a single fixed slot. Its most common scheduled departure was 15:25, used on 62 of 276 flights, with 15:35 (31 flights) and 15:12 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:2562 flights22.5%
Departs 15:3531 flights11.2%
Departs 15:1231 flights11.2%

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 15:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 1312 runs 5 points better at 76.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1312 next to MCO to RDU

Every carrier on MCO to RDU combined arrived on time 76.8% of the time across 2,702 flights, so DL 1312 is about level with it. Delta flew 1,005 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 5 points.

DL 1312 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1312thin sample	276	76.9%	93 min	1.09%	B
All Delta Air Lines on MCO–RDU	1,005	79.3%	92 min	2.39%	B
All carriers on MCO–RDU	2,702	76.8%	77 min	1.78%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1312 quarter by quarter

DL 1312 did not run the same all year. Its best quarter was Jul–Sep 2025 at 85.9% on time and its weakest Jan–Mar 2026 at 65.5%, a swing of 20 points on roughly 92 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 202578 flights85.9%
Oct–Dec 202517 flights—
Jan–Mar 202690 flights65.5%
Apr–Jun 202691 flights80.2%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1312 did best on Thursday at 82.5% on time and worst on Sunday at 68.3%. Each day rests on about 39 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1312 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 5,850 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.

Late-arriving aircraft
53%
Carrier
31%
National Airspace System
10%
Extreme weather
6%

53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 5,850 reported delay minutes here, that single category outweighs weather by 9 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 5,850 delay minutes reported on DL 1312.

Cancellations sit at 1.09% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 9.5% 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 534 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 three other city pairs in the data, including ATL to SAT (73), SAT to ATL (72) and RDU to MCO (62), but none flew often enough under DL 1312 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MCO to RDU only.

One caution: this is a thin sample. 276 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 1312

For a booking, read DL 1312 as 76.9% on time with 1.09% cancelled over 276 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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