Flight number record
DL 1580
Delta Air Lines · Boston to Orlando
- Route
- BOS → MCO
- Departs
- 07:05
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1580, check with Delta Air Lines.
DL 1580 earns an A−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 35 minutes. That rests on 255 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 1580's record is 13 points better than the US average of 77.3%. That gap is worth roughly 134 fewer late arrivals for every thousand flights.
Key figures
On time
90.7%
Arrivals under 15 minutes late, of 246 completed flights
Avg delay
34 min
Across delayed arrivals only, not all flights
Cancelled
3.53%
National rate is 1.89%
1 hour+ late
1.2%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 12 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.
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Schedule
When DL 1580 flies
DL 1580 flies BOS to MCO without a single fixed slot. Its most common scheduled departure was 07:05, used on 86 of 255 flights, with 07:15 (68 flights) and 07:20 (45 flights) next.
- Departs 07:0586 flights33.7%
- Departs 07:1568 flights26.7%
- Departs 07:2045 flights17.6%
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 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1580 runs level with that at 90.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 1580 next to BOS to MCO
Every carrier on BOS to MCO combined arrived on time 69.5% of the time across 4,605 flights, so DL 1580 is 21 points ahead of it. Delta flew 1,257 flights on the same city pair under all its flight numbers, including this one, and those ran 75.5% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1580thin sample | 255 | 90.7% | 34 min | 3.53% | A− |
| All Delta Air Lines on BOS–MCO | 1,257 | 75.5% | 79 min | 2.23% | B |
| All carriers on BOS–MCO | 4,605 | 69.5% | 77 min | 3.17% | C− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1580 quarter by quarter
DL 1580 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.6% on time and its weakest Jan–Mar 2026 at 84.7%, a swing of 12 points on roughly 85 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.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights84.7%
- Apr–Jun 202691 flights96.6%
- Jul–Sep 202662 flights93.3%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1580 ranged from 85.7% on Sunday to 97.1% on Tuesday. With about 36 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1580 runs when it is late
DL 1580 often beats the schedule: 106 of 246 completed flights, 43%, arrived 15 minutes or more early. The 23 late arrivals split 11 under half an hour, 9 between 30 and 60 minutes, and 3 an hour or more. Not one arrived two hours late.
- 15+ min early106 flights43.1%
- Within 15 min117 flights47.6%
- 15–29 min late11 flights4.5%
- 30–59 min late9 flights3.7%
- 1–2 hours late3 flights1.2%
- 2+ hours late0 flights0.0%
Scale runs 0% to 100%.
Share of 246 completed flights by arrival against schedule.
Only 14 of 246 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for DL 1580
The latest arrival of the period was on 28 May 2026, 1 hour 17 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 May 2026 | 1 hour 17 minutes | Carrier |
| 1 January 2026 | 1 hour 11 minutes | National Airspace System |
| 18 January 2026 | 1 hour 3 minutes | National Airspace System |
| 30 December 2025 | 52 minutes | Carrier |
| 29 December 2025 | 47 minutes | Carrier |
Delay causes
Why DL 1580 runs late
Carrier accounts for 54% of the 774 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Carrier
- 46%National Airspace System
The largest share of delay minutes, 54%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 419 of the 774 delay minutes reported here. The split is drawn from 774 delay minutes reported on DL 1580.
Cancellations run at 3.53%, against 1.89% 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
Badly late arrivals are rare here: only 1.2% land an hour or more behind schedule, against 8.3% 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.
The 1,121 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.
The same number turns up on one other city pair in the data, including MCO to BOS (227), but none flew often enough under DL 1580 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to MCO only.
One caution: this is a thin sample. 255 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 1580
For a booking, the cancellation rate is the figure to plan around on DL 1580: 3.53% of its 255 scheduled flights did not operate. A late arrival costs roughly 35 minutes, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to MCO, every carrier and departure
- MCO to BOS, the return direction
- JetBlue Airways 451 on the same route52.2%
- Delta Air Lines 1513 on the same route65.8%
- JetBlue Airways 2251 on the same route71.8%
- JetBlue Airways 551 on the same route63.1%
- Boston Logan International (BOS) delay statistics
- Orlando International (MCO) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- What a cancellation rate actually tells you (and what it hides)
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 ; recomputed monthly. How this data is collected.