Flight number record
DL 1217
Delta Air Lines · Atlanta to Fort Myers
- Route
- ATL → RSW
- Departs
- 22:55
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1217, check with Delta Air Lines.
DL 1217 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 252 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so DL 1217 runs 6 points behind the country as a whole. Across a thousand flights that is about 55 extra late arrivals.
Key figures
On time
71.8%
Arrivals under 15 minutes late, of 248 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
1.19%
National rate is 1.89%
1 hour+ late
9.7%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. Beyond the headline rate, 9.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1217 flies
DL 1217 flies ATL to RSW without a single fixed slot. Its most common scheduled departure was 22:55, used on 54 of 252 flights, with 22:40 (42 flights) and 22:58 (36 flights) next.
- Departs 22:5554 flights21.4%
- Departs 22:4042 flights16.7%
- Departs 22:5836 flights14.3%
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 22:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 1217 runs level with that at 71.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 1217 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 1217 is 5 points behind 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 trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1217thin sample | 252 | 71.8% | 71 min | 1.19% | C |
| 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 1217 quarter by quarter
DL 1217 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.8% on time and its weakest Jul–Sep 2026 at 56.1%, a swing of 22 points on roughly 84 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 flights76.4%
- Apr–Jun 202690 flights77.8%
- Jul–Sep 202660 flights56.1%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1217 did best on Wednesday at 86.1% on time and worst on Sunday at 61.1%. Each day rests on about 36 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1217 runs when it is late
The 70 late arrivals split 22 under half an hour, 24 between 30 and 60 minutes, and 24 an hour or more.
- 15+ min early43 flights17.3%
- Within 15 min135 flights54.4%
- 15–29 min late22 flights8.9%
- 30–59 min late24 flights9.7%
- 1–2 hours late15 flights6.0%
- 2+ hours late9 flights3.6%
Scale runs 0% to 100%.
Share of 248 completed flights by arrival against schedule.
14 of 78 late departures made up the time and arrived on time, 18% of them. 6 flights left on time and still arrived late.
The worst days
Worst days for DL 1217
The latest arrival of the period was on 31 July 2026, 7 hours 52 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 31 July 2026 | 7 hours 52 minutes | Carrier |
| 16 February 2026 | 7 hours 24 minutes | Carrier |
| 1 April 2026 | 4 hours 19 minutes | Carrier |
| 6 April 2026 | 3 hours 19 minutes | Carrier |
| 21 March 2026 | 2 hours 48 minutes | Carrier |
Delay causes
Why DL 1217 runs late
Carrier accounts for 68% of the 4,976 delay minutes carriers reported here, and the remaining four split what is left.
- 68%Carrier
- 22%Late-arriving aircraft
- 6%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 68%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,385 of the 4,976 delay minutes reported here. The split is drawn from 4,976 delay minutes reported on DL 1217.
Cancellations sit at 1.19% against a national 1.89%, which is ordinary. Diversions add another 0.40%.
Connections and routes
What a delay on this flight costs
9.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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.
The same number turns up on four other city pairs in the data, including ATL to MSY (90), MSY to ATL (90) and ATL to TLH (1), but none flew often enough under DL 1217 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to RSW only.
One caution: this is a thin sample. 252 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 1217
For a booking, DL 1217 is one of the weaker ways to fly ATL to RSW: 5 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
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 1153 on the same route83.3%
- 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%
- 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
- How often a connection fails at the major US hubs
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.