Flight number record

DL 1505

Delta Air Lines · Orlando to Atlanta

Route: MCO → ATL
Departs: 09:00
Flights: 346
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1505, check with Delta Air Lines.

DL 1505 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 346 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 1505's record is 9 points better than the US average of 77.6%. That gap is worth roughly 92 fewer late arrivals for every thousand flights.

On time

86.8%

Arrivals under 15 minutes late, of 342 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

1.16%

National rate is 1.81%

1 hour+ late

4.1%

National rate is 8.1%

These figures cover 346 flights between July 2025 and June 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When DL 1505 flies

DL 1505 is scheduled to leave Orlando (MCO) at 09:00 local time and reach Atlanta (ATL) at 10:35. That slot held for 305 of the 346 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 09:00305 flights88.2%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 1505 runs 3 points better at 86.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 1505 next to MCO to ATL

Every carrier on MCO to ATL combined arrived on time 75.6% of the time across 8,207 flights, so DL 1505 is 11 points ahead of it. Delta flew 5,463 flights on the same city pair under all its flight numbers, including this one, and those ran 79.1% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 5 points.

DL 1505 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1505thin sample	346	86.8%	74 min	1.16%	A
All Delta Air Lines on MCO–ATL	5,463	79.1%	88 min	1.24%	B
All carriers on MCO–ATL	8,207	75.6%	79 min	1.40%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1505 quarter by quarter

DL 1505 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.7% on time and its weakest Jul–Sep 2025 at 80.8%, a swing of 16 points on roughly 87 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 202573 flights80.8%
Oct–Dec 202592 flights85.7%
Jan–Mar 202690 flights83.0%
Apr–Jun 202691 flights96.7%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1505 did best on Wednesday at 93.9% on time and worst on Sunday at 78.8%. Each day rests on about 49 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1505 runs late

One category carries most of the weight here. Carrier accounts for 52% of the 3,328 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
52%
National Airspace System
33%
Extreme weather
9%
Late-arriving aircraft
6%

The largest share of delay minutes, 52%, 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 1,744 of the 3,328 delay minutes reported here. The split is drawn from 3,328 delay minutes reported on DL 1505.

Cancellations sit at 1.16% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.1% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

Every one of the 346 flights under DL 1505 in the data flew MCO to ATL. 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. 346 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 1505

For a booking, DL 1505 has one of the better records a US domestic flight can show: 86.8% on time and 1.16% cancelled. That is a base rate, not a promise about any single 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