Flight number record
DL 1640
Delta Air Lines · Pensacola to Atlanta
- Route
- PNS → ATL
- Departs
- 13:54
- Flights
- 343
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1640, check with Delta Air Lines.
DL 1640 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 343 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 1640's record is 10 points better than the US average of 77.3%. That gap is worth roughly 98 fewer late arrivals for every thousand flights.
Key figures
On time
87.1%
Arrivals under 15 minutes late, of 342 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
0.29%
National rate is 1.89%
1 hour+ late
5.3%
National rate is 8.3%
These figures cover 343 flights between September 2025 and August 2026. The median arrival is 12 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 1640 flies
DL 1640 flies PNS to ATL without a single fixed slot. Its most common scheduled departure was 13:54, used on 48 of 343 flights, with 13:26 (41 flights) and 12:16 (35 flights) next.
- Departs 13:5448 flights14.0%
- Departs 13:2641 flights12.0%
- Departs 12:1635 flights10.2%
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 13:54 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 1640 runs 9 points better at 87.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 1640 next to PNS to ATL
Every carrier on PNS to ATL combined arrived on time 88.8% of the time across 2,806 flights, so DL 1640 is 2 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1640thin sample | 343 | 87.1% | 79 min | 0.29% | A+ |
| All Delta Air Lines on PNS–ATL | 2,806 | 88.8% | 89 min | 1.82% | A |
| All carriers on PNS–ATL | 2,806 | 88.8% | 89 min | 1.82% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1640 quarter by quarter
DL 1640 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jul–Sep 2026 at 77.4%, a swing of 16 points on roughly 69 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 202579 flights91.0%
- Jan–Mar 202681 flights87.7%
- Apr–Jun 202691 flights87.9%
- Jul–Sep 202662 flights77.4%
Scale runs 70% to 100%.
By weekday, DL 1640 did best on Wednesday at 94.0% on time and worst on Friday at 79.6%. Each day rests on about 49 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1640 runs when it is late
DL 1640 often beats the schedule: 127 of 342 completed flights, 37%, arrived 15 minutes or more early. The 44 late arrivals split 13 under half an hour, 13 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early127 flights37.1%
- Within 15 min171 flights50.0%
- 15–29 min late13 flights3.8%
- 30–59 min late13 flights3.8%
- 1–2 hours late10 flights2.9%
- 2+ hours late8 flights2.3%
Scale runs 0% to 100%.
Share of 342 completed flights by arrival against schedule.
11 of 51 late departures made up the time and arrived on time, 22% of them. Only 4 left on time and still arrived late.
The worst days
Worst days for DL 1640
The latest arrival of the period was on 4 December 2025, 7 hours 10 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across December, November, May and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 December 2025 | 7 hours 10 minutes | Carrier |
| 8 November 2025 | 4 hours 43 minutes | National Airspace System |
| 19 May 2026 | 4 hours 34 minutes | Carrier |
| 3 July 2026 | 3 hours 33 minutes | Late-arriving aircraft |
| 11 July 2026 | 2 hours 38 minutes | Late-arriving aircraft |
Delay causes
Why DL 1640 runs late
Late-arriving aircraft accounts for 54% of the 3,478 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 25%National Airspace System
- 21%Carrier
- 1%Extreme weather
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,478 reported delay minutes here, that single category outweighs weather by 54 to one. The split is drawn from 3,478 delay minutes reported on DL 1640.
Cancellations are rare at 0.29%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
5.3% 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 a little over an hour, which a normal layover absorbs.
DL 1640 is not only a PNS to ATL flight. It also flew ATL to PNS (343 flights, 85.9% 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. 343 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 |
|---|---|---|---|---|---|
| ATL to PNSthin sample | 343 | 85.9% | 53 min | 0.58% | A+ |
What to do with this
Booking DL 1640
For a booking, DL 1640 has one of the better records a US domestic flight can show: 87.1% on time and 0.29% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PNS to ATL, every carrier and departure
- ATL to PNS, the return direction
- Delta Air Lines 3129 on the same route91.4%
- Delta Air Lines 3019 on the same route93.5%
- Delta Air Lines 3103 on the same route92.6%
- Delta Air Lines 1013 on the same route82.9%
- Delta Air Lines 3067 on the same route90.6%
- 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.