Flight number record

DL 1740

Delta Air Lines · New York to Orlando

Route: JFK → MCO
Departs: 19:59
Flights: 342
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1740, check with Delta Air Lines.

DL 1740 draws a C−. About 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 342 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so DL 1740 runs 11 points behind the country as a whole. Across a thousand flights that is about 107 extra late arrivals.

On time

66.9%

Arrivals under 15 minutes late, of 329 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

3.80%

National rate is 1.81%

1 hour+ late

13.4%

National rate is 8.1%

These figures cover 342 flights between July 2025 and June 2026. Beyond the headline rate, 13.4% 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 1740 flies

DL 1740 flies JFK to MCO without a single fixed slot. Its most common scheduled departure was 19:59, used on 96 of 342 flights, with 19:55 (69 flights) and 19:50 (60 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:5996 flights28.1%
Departs 19:5569 flights20.2%
Departs 19:5060 flights17.5%

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 19:59 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 1740 runs level with that at 66.9%. 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 1740 next to JFK to MCO

Every carrier on JFK to MCO combined arrived on time 73.7% of the time across 4,887 flights, so DL 1740 is 7 points behind it. Delta flew 1,979 flights on the same city pair under all its flight numbers, including this one, and those ran 77.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 15 points.

DL 1740 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1740thin sample	342	66.9%	74 min	3.80%	C−
All Delta Air Lines on JFK–MCO	1,979	77.6%	66 min	2.93%	B
All carriers on JFK–MCO	4,887	73.7%	75 min	2.93%	C
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1740 quarter by quarter

DL 1740 did not run the same all year. Its best quarter was Apr–Jun 2026 at 76.7% on time and its weakest Oct–Dec 2025 at 54.0%, a swing of 23 points on roughly 86 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 202591 flights67.4%
Oct–Dec 202588 flights54.0%
Jan–Mar 202672 flights69.7%
Apr–Jun 202691 flights76.7%

Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1740 did best on Friday at 79.6% on time and worst on Sunday at 51.1%. Each day rests on about 49 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1740 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 8,099 reported delay minutes.

National Airspace System
38%
Late-arriving aircraft
37%
Carrier
24%
Extreme weather
2%

37% 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 8,099 reported delay minutes here, that single category outweighs weather by 19 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 8,099 delay minutes reported on DL 1740.

Cancellations run at 3.80%, against 1.81% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

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. 13.4% 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 944 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 342 flights under DL 1740 in the data flew JFK to MCO. 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. 342 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 1740

For a booking, the cancellation rate is the figure to plan around on DL 1740: 3.80% of its 342 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.

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