Flight number record
DL 1153
Delta Air Lines · Atlanta to Fort Myers
- Route
- ATL → RSW
- Departs
- 10:10
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1153, check with Delta Air Lines.
DL 1153 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 363 flights, with a median arrival 4 minutes early.
Set against the rest of the country, DL 1153's record is 6 points better than the US average of 77.3%. That gap is worth roughly 60 fewer late arrivals for every thousand flights.
Key figures
On time
83.3%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
2.48%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 4 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 1153 flies
DL 1153 flies ATL to RSW without a single fixed slot. Its most common scheduled departure was 10:10, used on 104 of 363 flights, with 10:25 (57 flights) and 10:49 (41 flights) next.
- Departs 10:10104 flights28.7%
- Departs 10:2557 flights15.7%
- Departs 10:4941 flights11.3%
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 10:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 1153 runs level with that at 83.3%. 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 1153 next to ATL to RSW
Every carrier on ATL to RSW combined arrived on time 76.8% of the time across 2,806 flights, so DL 1153 is 7 points ahead of it. Delta flew 2,720 flights on the same city pair under all its flight numbers, including this one, and those ran 77.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1153thin sample | 363 | 83.3% | 42 min | 2.48% | B |
| All Delta Air Lines on ATL–RSW | 2,720 | 77.4% | 57 min | 1.58% | B |
| All carriers on ATL–RSW | 2,806 | 76.8% | 57 min | 1.60% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1153 quarter by quarter
DL 1153 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jan–Mar 2026 at 80.0%, a swing of 13 points on roughly 73 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 flights93.3%
- Oct–Dec 202590 flights84.1%
- Jan–Mar 202690 flights80.0%
- Apr–Jun 202691 flights83.3%
- Jul–Sep 202662 flights82.0%
Scale runs 70% to 100%.
By weekday, DL 1153 ranged from 78.8% on Monday to 86.3% on Tuesday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1153 runs when it is late
The 59 late arrivals split 27 under half an hour, 21 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early56 flights15.8%
- Within 15 min239 flights67.5%
- 15–29 min late27 flights7.6%
- 30–59 min late21 flights5.9%
- 1–2 hours late8 flights2.3%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 354 completed flights by arrival against schedule.
12 of 58 late departures made up the time and arrived on time, 21% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for DL 1153
The latest arrival of the period was on 7 December 2025, 2 hours 20 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 2 hours 20 minutes | Late-arriving aircraft |
| 17 December 2025 | 2 hours 5 minutes | Carrier |
| 7 March 2026 | 2 hours | Carrier |
| 28 April 2026 | 1 hour 48 minutes | Late-arriving aircraft |
| 28 September 2025 | 1 hour 13 minutes | Late-arriving aircraft |
Delay causes
Why DL 1153 runs late
Carrier accounts for 50% of the 2,448 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 29%Late-arriving aircraft
- 22%National Airspace System
The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,214 of the 2,448 delay minutes reported here. The split is drawn from 2,448 delay minutes reported on DL 1153.
Cancellations sit at 2.48% against a national 1.89%, 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 3.1% 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 515 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.
DL 1153 is not only a ATL to RSW flight. It also flew RSW to ATL (253 flights, 79.4% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 363 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| RSW to ATLthin sample | 253 | 79.4% | 65 min | 2.37% | B |
What to do with this
Booking DL 1153
For a booking, read DL 1153 as 83.3% on time with 2.48% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to RSW, every carrier and departure
- RSW to ATL, the return direction
- Delta Air Lines 1196 on the same route82.4%
- Delta Air Lines 1089 on the same route89.4%
- Delta Air Lines 1124 on the same route71.8%
- Delta Air Lines 1736 on the same route65.6%
- Delta Air Lines 1217 on the same route71.8%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Southwest Florida International (RSW) 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
- Worst months to fly in the US, ranked by the data
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.