Flight number record
DL 3021
Delta Air Lines · Atlanta to Pensacola
- Route
- ATL → PNS
- Departs
- 19:51
- Flights
- 292
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 3021, check with Delta Air Lines.
DL 3021 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land about 55 minutes behind schedule. That rests on 292 flights, with a median arrival 5 minutes early.
Key figures
On time
75.3%
Arrivals under 15 minutes late, of 287 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
6.3%
National rate is 8.3%
These figures cover 292 flights between September 2025 and August 2026. The median arrival is 5 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 3021 flies
DL 3021 flies ATL to PNS without a single fixed slot. Its most common scheduled departure was 19:51, used on 32 of 292 flights, with 21:48 (30 flights) next.
- Departs 19:5132 flights11.0%
- Departs 21:4830 flights10.3%
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 19:51 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 3021 runs 7 points better at 75.3%. 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 3021 next to ATL to PNS
Every carrier on ATL to PNS combined arrived on time 82.1% of the time across 2,806 flights, so DL 3021 is 7 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 3021thin sample | 292 | 75.3% | 55 min | 1.37% | B |
| All Delta Air Lines on ATL–PNS | 2,806 | 82.1% | 61 min | 1.71% | B |
| All carriers on ATL–PNS | 2,806 | 82.1% | 61 min | 1.71% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 3021 quarter by quarter
DL 3021 did not run the same all year. Its best quarter was Oct–Dec 2025 at 90.6% on time and its weakest Jul–Sep 2026 at 58.3%, a swing of 32 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 202512 flights—
- Oct–Dec 202553 flights90.6%
- Jan–Mar 202675 flights73.6%
- Apr–Jun 202690 flights77.8%
- Jul–Sep 202662 flights58.3%
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 3021 did best on Saturday at 87.5% on time and worst on Friday at 68.9%. Each day rests on about 42 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 3021 runs when it is late
The 71 late arrivals split 23 under half an hour, 30 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early38 flights13.2%
- Within 15 min178 flights62.0%
- 15–29 min late23 flights8.0%
- 30–59 min late30 flights10.5%
- 1–2 hours late11 flights3.8%
- 2+ hours late7 flights2.4%
Scale runs 0% to 100%.
Share of 287 completed flights by arrival against schedule.
8 of 64 late departures made up the time and arrived on time, 13% of them. In the other direction, 15 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PNS.
The worst days
Worst days for DL 3021
The latest arrival of the period was on 18 June 2026, 5 hours 44 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 June 2026 | 5 hours 44 minutes | Carrier |
| 27 August 2026 | 4 hours 11 minutes | Carrier |
| 5 October 2025 | 2 hours 26 minutes | Late-arriving aircraft |
| 3 July 2026 | 2 hours 17 minutes | Late-arriving aircraft |
| 16 March 2026 | 2 hours 12 minutes | Carrier |
Delay causes
Why DL 3021 runs late
Carrier accounts for 43% of the 3,870 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 37%Late-arriving aircraft
- 18%National Airspace System
- 2%Extreme weather
37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,870 reported delay minutes here, that single category outweighs weather by 17 to one. The split is drawn from 3,870 delay minutes reported on DL 3021.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 0.34%.
Connections and routes
What a delay on this flight costs
6.3% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 55 minutes, which a normal layover absorbs.
Every one of the 292 flights under DL 3021 in the data flew ATL to PNS. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 292 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 3021
For a booking, DL 3021 is one of the weaker ways to fly ATL to PNS: 7 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 PNS, every carrier and departure
- PNS to ATL, the return direction
- Delta Air Lines 3103 on the same route92.6%
- Delta Air Lines 1640 on the same route85.9%
- Delta Air Lines 1013 on the same route82.1%
- Delta Air Lines 2211 on the same route78.0%
- 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
- Why the first flight of the morning is statistically safest
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.