Flight number record

DL 2520

Delta Air Lines · New York to Orlando

Route: LGA → MCO
Departs: 15:35
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2520, check with Delta Air Lines.

DL 2520 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 364 flights, with a median arrival 5 minutes late.

The national on-time rate over the same period is 77.6%, so DL 2520 runs 18 points behind the country as a whole. Across a thousand flights that is about 178 extra late arrivals.

On time

59.8%

Arrivals under 15 minutes late, of 348 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

3.57%

National rate is 1.81%

1 hour+ late

15.5%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 15.5% 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 2520 flies

DL 2520 flies LGA to MCO without a single fixed slot. Its most common scheduled departure was 15:35, used on 81 of 364 flights, with 15:40 (81 flights) and 15:49 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:3581 flights22.3%
Departs 15:4081 flights22.3%
Departs 15:4952 flights14.3%

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 15:35 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2520 runs 13 points worse at 59.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2520 next to LGA to MCO

Every carrier on LGA to MCO combined arrived on time 70.2% of the time across 5,262 flights, so DL 2520 is 10 points behind it. Delta flew 2,170 flights on the same city pair under all its flight numbers, including this one, and those ran 72.2% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 22 points.

DL 2520 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2520thin sample	364	59.8%	63 min	3.57%	D−
All Delta Air Lines on LGA–MCO	2,170	72.2%	71 min	4.42%	C−
All carriers on LGA–MCO	5,262	70.2%	79 min	4.03%	C−
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2520 quarter by quarter

DL 2520 did not run the same all year. Its best quarter was Apr–Jun 2026 at 67.8% on time and its weakest Oct–Dec 2025 at 47.7%, a swing of 20 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 202591 flights60.5%
Oct–Dec 202592 flights47.7%
Jan–Mar 202690 flights63.1%
Apr–Jun 202691 flights67.8%

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

By weekday, DL 2520 did best on Saturday at 72.0% on time and worst on Monday at 48.0%. Each day rests on about 52 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2520 runs late

One category carries most of the weight here. National Airspace System accounts for 47% of the 8,839 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.

National Airspace System
47%
Carrier
28%
Late-arriving aircraft
24%
Extreme weather
1%
Security
0%

47% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 4,165 minutes out of 8,839, against a national NAS share of 21%. The split is drawn from 8,839 delay minutes reported on DL 2520.

Cancellations run at 3.57%, against 1.81% nationally. That is about one flight in 30 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. 15.5% 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 950 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 one other city pair in the data, including MCO to LGA (141), but none flew often enough under DL 2520 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to MCO only.

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 2520

For a booking, the cancellation rate is the figure to plan around on DL 2520: 3.57% of its 364 scheduled flights did not operate. A late arrival costs about 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