Flight number record
DL 1548
Delta Air Lines · Orlando to Atlanta
- Route
- MCO → ATL
- Departs
- 05:30
- Flights
- 251
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1548, check with Delta Air Lines.
DL 1548 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 251 flights, with a median arrival 19 minutes early.
Set against the rest of the country, DL 1548's record is 17 points better than the US average of 77.3%. That gap is worth roughly 174 fewer late arrivals for every thousand flights.
Key figures
On time
94.7%
Arrivals under 15 minutes late, of 244 completed flights
Avg delay
93 min
Across delayed arrivals only, not all flights
Cancelled
2.79%
National rate is 1.89%
1 hour+ late
2.5%
National rate is 8.3%
These figures cover 251 flights between September 2025 and August 2026. The median arrival is 19 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 1548 flies
DL 1548 is scheduled to leave Orlando (MCO) at 05:30 local time and reach Atlanta (ATL) at 07:05. That slot held for 251 of the 251 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 05:30251 flights100.0%
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 05:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1548 runs 5 points better at 94.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 1548 next to MCO to ATL
Every carrier on MCO to ATL combined arrived on time 74.9% of the time across 8,259 flights, so DL 1548 is 20 points ahead of it. Delta flew 5,531 flights on the same city pair under all its flight numbers, including this one, and those ran 78.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1548thin sample | 251 | 94.7% | 93 min | 2.79% | A |
| All Delta Air Lines on MCO–ATL | 5,531 | 78.3% | 88 min | 1.39% | B |
| All carriers on MCO–ATL | 8,259 | 74.9% | 80 min | 1.65% | C |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1548 quarter by quarter
Quarter by quarter DL 1548 held fairly steady: 90.7% in Jan–Mar 2026, 100.0% in Apr–Jun 2026 and 94.8% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 20259 flights—
- Jan–Mar 202689 flights90.7%
- Apr–Jun 202691 flights100.0%
- Jul–Sep 202662 flights94.8%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1548 did best on Thursday at 100.0% on time and worst on Sunday at 85.7%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1548 runs when it is late
DL 1548 often beats the schedule: 180 of 244 completed flights, 74%, arrived 15 minutes or more early. The 13 late arrivals split 4 under half an hour, 3 between 30 and 60 minutes, and 6 an hour or more.
- 15+ min early180 flights73.8%
- Within 15 min51 flights20.9%
- 15–29 min late4 flights1.6%
- 30–59 min late3 flights1.2%
- 1–2 hours late2 flights0.8%
- 2+ hours late4 flights1.6%
Scale runs 0% to 100%.
Share of 244 completed flights by arrival against schedule.
Only 14 of 244 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 1548
The latest arrival of the period was on 4 July 2026, 5 hours 8 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 July 2026 | 5 hours 8 minutes | Carrier |
| 25 February 2026 | 3 hours 55 minutes | Carrier |
| 7 March 2026 | 2 hours 13 minutes | National Airspace System |
| 17 March 2026 | 2 hours 13 minutes | Carrier |
| 26 December 2025 | 1 hour 48 minutes | Carrier |
Delay causes
Why DL 1548 runs late
Carrier accounts for 82% of the 1,208 delay minutes carriers reported here, and the remaining four split what is left.
- 82%Carrier
- 18%National Airspace System
The largest share of delay minutes, 82%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 994 of the 1,208 delay minutes reported here. The split is drawn from 1,208 delay minutes reported on DL 1548.
Cancellations run at 2.79%, against 1.89% nationally. That is roughly one flight in 40 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 2.5% 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 same number turns up on one other city pair in the data, including STL to DTW (96), but none flew often enough under DL 1548 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MCO to ATL only.
One caution: this is a thin sample. 251 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 1548
For a booking, the cancellation rate is the figure to plan around on DL 1548: 2.79% of its 251 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- MCO to ATL, every carrier and departure
- ATL to MCO, the return direction
- Delta Air Lines 1658 on the same route79.9%
- Delta Air Lines 1213 on the same route83.1%
- Delta Air Lines 1494 on the same route94.2%
- Delta Air Lines 664 on the same route79.2%
- Delta Air Lines 1150 on the same route58.0%
- Delta Air Lines 2080 on the same route89.6%
- Orlando International (MCO) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.