Flight number record

DL 1057

Delta Air Lines · Atlanta to Sarasota

Route: ATL → SRQ
Departs: 20:59
Flights: 320
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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, 8 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 320 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.6%, so DL 1057 runs 8 points behind the country as a whole. Across a thousand flights that is about 79 extra late arrivals.

On time

69.7%

Arrivals under 15 minutes late, of 317 completed flights

Avg delay

59 min

Across delayed arrivals only, not all flights

Cancelled

0.94%

National rate is 1.81%

1 hour+ late

10.1%

National rate is 8.1%

These figures cover 320 flights between July 2025 and June 2026. Beyond the headline rate, 10.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 1057 flies

DL 1057 flies ATL to SRQ without a single fixed slot. Its most common scheduled departure was 20:59, used on 46 of 320 flights, with 17:15 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:5946 flights14.4%
Departs 17:1533 flights10.3%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 20:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 1057 runs level with that at 69.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 1057 next to ATL to SRQ

Every carrier on ATL to SRQ combined arrived on time 81.6% of the time across 2,285 flights, so DL 1057 is 12 points behind it. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 12 points.

DL 1057 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1057thin sample	320	69.7%	59 min	0.94%	C+
All Delta Air Lines on ATL–SRQ	2,285	81.6%	57 min	1.66%	B
All carriers on ATL–SRQ	2,285	81.6%	57 min	1.66%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 80 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 202592 flights65.9%
Oct–Dec 202558 flights54.4%
Jan–Mar 202680 flights68.4%
Apr–Jun 202690 flights84.4%

Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1057 did best on Wednesday at 82.9% on time and worst on Sunday at 57.4%. Each day rests on about 46 flights, so a gap of 26 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1057 runs late

One category carries most of the weight here. Carrier accounts for 57% of the 5,672 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
57%
Late-arriving aircraft
31%
National Airspace System
11%
Extreme weather
1%

The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,239 of the 5,672 delay minutes reported here. The split is drawn from 5,672 delay minutes reported on DL 1057.

Cancellations sit at 0.94% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 320 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: 12 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.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures