Flight number record

DL 3129

Delta Air Lines · Pensacola to Atlanta

Route: PNS → ATL
Departs: 07:00
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 3129, check with Delta Air Lines.

DL 3129 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 15 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 364 flights, with a median arrival 12 minutes early.

Set against the rest of the country, DL 3129's record is 15 points better than the US average of 77.6%. That gap is worth roughly 146 fewer late arrivals for every thousand flights.

On time

92.2%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

1.65%

National rate is 1.81%

1 hour+ late

3.4%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 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.

Schedule

When DL 3129 flies

DL 3129 flies PNS to ATL without a single fixed slot. Its most common scheduled departure was 07:00, used on 193 of 364 flights, with 07:05 (98 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00193 flights53.0%
Departs 07:0598 flights26.9%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 3129 runs 3 points better at 92.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 3129 next to PNS to ATL

Every carrier on PNS to ATL combined arrived on time 90.2% of the time across 2,803 flights, so DL 3129 is 2 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 11 points.

DL 3129 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 3129thin sample	364	92.2%	87 min	1.65%	A
All Delta Air Lines on PNS–ATL	2,803	90.2%	87 min	1.86%	A
All carriers on PNS–ATL	2,803	90.2%	87 min	1.86%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 3129 quarter by quarter

Quarter by quarter DL 3129 held fairly steady: 95.6% in Jul–Sep 2025, 86.5% in Oct–Dec 2025, 90.8% in Jan–Mar 2026 and 95.6% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights95.6%
Oct–Dec 202591 flights86.5%
Jan–Mar 202690 flights90.8%
Apr–Jun 202691 flights95.6%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 3129 did best on Saturday at 98.0% on time and worst on Sunday at 84.0%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 3129 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 2,421 reported delay minutes.

Extreme weather
38%
Carrier
25%
Late-arriving aircraft
23%
National Airspace System
15%

Extreme weather accounts for 38% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 6.0 times the usual weather exposure. The split is drawn from 2,421 delay minutes reported on DL 3129.

Cancellations sit at 1.65% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.4% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

Every one of the 364 flights under DL 3129 in the data flew PNS to ATL. 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. 364 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 3129

For a booking, read DL 3129 as 92.2% on time with 1.65% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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