Flight number record

DL 1740

Delta Air Lines · New York to Orlando

Route: JFK → MCO
Departs: 19:59
Flights: 343
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 343 flights, with a median arrival 2 minutes early.

The national on-time rate over the same period is 77.3%, so DL 1740 runs 12 points behind the country as a whole. Across a thousand flights that is about 122 extra late arrivals.

On time

65.1%

Arrivals under 15 minutes late, of 327 completed flights

Avg delay

80 min

Across delayed arrivals only, not all flights

Cancelled

4.66%

National rate is 1.89%

1 hour+ late

13.8%

National rate is 8.3%

These figures cover 343 flights between September 2025 and August 2026. Beyond the headline rate, 13.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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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 158 of 343 flights, with 19:50 (60 flights) and 19:55 (44 flights) next.

Departs 19:59158 flights46.1%
Departs 19:5060 flights17.5%
Departs 19:5544 flights12.8%

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 19:59 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 1740 runs 3 points worse at 65.1%. 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 1740 next to JFK to MCO

Every carrier on JFK to MCO combined arrived on time 73.7% of the time across 4,804 flights, so DL 1740 is 9 points behind it. Delta flew 1,980 flights on the same city pair under all its flight numbers, including this one, and those ran 76.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 16 points.

DL 1740 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1740thin sample	343	65.1%	80 min	4.66%	C−
All Delta Air Lines on JFK–MCO	1,980	76.2%	71 min	3.23%	B−
All carriers on JFK–MCO	4,804	73.7%	79 min	3.81%	C−
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	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 Jul–Sep 2026 at 53.7%, a swing of 23 points on roughly 69 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 flights73.3%
Oct–Dec 202588 flights54.0%
Jan–Mar 202672 flights69.7%
Apr–Jun 202691 flights76.7%
Jul–Sep 202662 flights53.7%

Scale runs 45% to 80%.

By weekday, DL 1740 did best on Tuesday at 79.1% on time and worst on Sunday at 53.2%. Each day rests on about 49 flights, so a gap of 26 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 1740 runs when it is late

DL 1740 often beats the schedule: 107 of 327 completed flights, 33%, arrived 15 minutes or more early. The 114 late arrivals split 32 under half an hour, 37 between 30 and 60 minutes, and 45 an hour or more.

15+ min early107 flights32.7%
Within 15 min106 flights32.4%
15–29 min late32 flights9.8%
30–59 min late37 flights11.3%
1–2 hours late20 flights6.1%
2+ hours late25 flights7.6%

Scale runs 0% to 100%.

Share of 327 completed flights by arrival against schedule.

36 of 124 late departures made up the time and arrived on time, 29% of them. In the other direction, 26 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MCO.

The worst days

Worst days for DL 1740

The latest arrival of the period was on 17 August 2026, 14 hours 11 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across August, October, December, June and July, with no single month standing out.

The latest arrivals of DL 1740 in the period
Date	Arrived late by	Largest filed cause
17 August 2026	14 hours 11 minutes	Carrier
30 October 2025	5 hours 51 minutes	National Airspace System
14 December 2025	4 hours 24 minutes	Late-arriving aircraft
6 June 2026	4 hours 18 minutes	National Airspace System
6 July 2026	3 hours 54 minutes	Late-arriving aircraft

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 9,060 reported delay minutes.

Late-arriving aircraft
36%
Carrier
34%
National Airspace System
28%
Extreme weather
2%

36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,060 reported delay minutes here, that single category outweighs weather by 21 to one. The split is drawn from 9,060 delay minutes reported on DL 1740.

Cancellations run at 4.66%, against 1.89% nationally. That is about one flight in twenty 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

13.8% 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 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.

Every one of the 343 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. 343 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: 4.66% of its 343 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures