Flight number record
DL 1057
Delta Air Lines · Atlanta to Sarasota
- Route
- ATL → SRQ
- Departs
- 21:15
- Flights
- 307
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1057, check with Delta Air Lines.
DL 1057 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 307 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so DL 1057 runs 7 points behind the country as a whole. Across a thousand flights that is about 69 extra late arrivals.
Key figures
On time
70.4%
Arrivals under 15 minutes late, of 304 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
0.98%
National rate is 1.89%
1 hour+ late
9.2%
National rate is 8.3%
These figures cover 307 flights between September 2025 and August 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1057 flies
DL 1057 flies ATL to SRQ without a single fixed slot. Its most common scheduled departure was 21:15, used on 43 of 307 flights.
- Departs 21:1543 flights14.0%
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 21:15 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 1057 runs level with that at 70.4%. 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 1057 next to ATL to SRQ
Every carrier on ATL to SRQ combined arrived on time 80.8% of the time across 2,289 flights, so DL 1057 is 10 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1057thin sample | 307 | 70.4% | 57 min | 0.98% | C+ |
| All Delta Air Lines on ATL–SRQ | 2,289 | 80.8% | 57 min | 1.66% | B |
| All carriers on ATL–SRQ | 2,289 | 80.8% | 57 min | 1.66% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1057 quarter by quarter
DL 1057 did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.4% on time and its weakest Oct–Dec 2025 at 54.4%, a swing of 30 points on roughly 61 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 flights73.3%
- Oct–Dec 202558 flights54.4%
- Jan–Mar 202680 flights68.4%
- Apr–Jun 202690 flights84.4%
- Jul–Sep 202649 flights64.6%
Scale runs 45% to 90%.
By weekday, DL 1057 did best on Wednesday at 83.8% on time and worst on Sunday at 61.7%. Each day rests on about 44 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1057 runs when it is late
The 90 late arrivals split 37 under half an hour, 25 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early32 flights10.5%
- Within 15 min182 flights59.9%
- 15–29 min late37 flights12.2%
- 30–59 min late25 flights8.2%
- 1–2 hours late21 flights6.9%
- 2+ hours late7 flights2.3%
Scale runs 0% to 100%.
Share of 304 completed flights by arrival against schedule.
12 of 90 late departures made up the time and arrived on time, 13% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for DL 1057
The latest arrival of the period was on 29 November 2025, 9 hours 56 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across November, October, June, March and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 November 2025 | 9 hours 56 minutes | Carrier |
| 10 October 2025 | 4 hours 18 minutes | Late-arriving aircraft |
| 14 June 2026 | 4 hours 18 minutes | National Airspace System |
| 17 March 2026 | 2 hours 57 minutes | Late-arriving aircraft |
| 11 July 2026 | 2 hours 50 minutes | Carrier |
Delay causes
Why DL 1057 runs late
Carrier accounts for 61% of the 5,114 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 24%Late-arriving aircraft
- 13%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 61%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,126 of the 5,114 delay minutes reported here. The split is drawn from 5,114 delay minutes reported on DL 1057.
Cancellations sit at 0.98% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
9.2% 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 same number turns up on one other city pair in the data, including SRQ to ATL (13), but none flew often enough under DL 1057 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to SRQ only.
One caution: this is a thin sample. 307 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 1057
For a booking, DL 1057 is one of the weaker ways to fly ATL to SRQ: 10 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 SRQ, every carrier and departure
- SRQ to ATL, the return direction
- Delta Air Lines 3104 on the same route85.0%
- Delta Air Lines 2997 on the same route78.4%
- Delta Air Lines 3115 on the same route78.0%
- Delta Air Lines 2438 on the same route86.5%
- Delta Air Lines 3196 on the same route94.2%
- 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
- 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.