Flight number record

DL 3131

Delta Air Lines · Atlanta to Panama City

Route: ATL → ECP
Departs: 23:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 3131, check with Delta Air Lines.

DL 3131 lands a B+, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 3131's record is 6 points better than the US average of 77.6%. That gap is worth roughly 62 fewer late arrivals for every thousand flights.

On time

83.8%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

88 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.81%

1 hour+ late

4.7%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 8 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 3131 flies

DL 3131 flies ATL to ECP without a single fixed slot. Its most common scheduled departure was 23:00, used on 115 of 365 flights, with 23:05 (56 flights) and 22:35 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:00115 flights31.5%
Departs 23:0556 flights15.3%
Departs 22:3539 flights10.7%

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 23:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 3131 runs 13 points better at 83.8%. 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 3131 next to ATL to ECP

Every carrier on ATL to ECP combined arrived on time 84.0% of the time across 2,426 flights, so DL 3131 is about level with it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 2 points.

DL 3131 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 3131	365	83.8%	88 min	0.82%	B+
All Delta Air Lines on ATL–ECP	2,426	84.0%	57 min	1.81%	B
All carriers on ATL–ECP	2,426	84.0%	57 min	1.81%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 3131 quarter by quarter

Quarter by quarter DL 3131 held fairly steady: 79.3% in Jul–Sep 2025, 85.4% in Oct–Dec 2025, 85.2% in Jan–Mar 2026 and 85.4% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights79.3%
Oct–Dec 202592 flights85.4%
Jan–Mar 202690 flights85.2%
Apr–Jun 202691 flights85.4%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 3131 did best on Thursday at 94.1% on time and worst on Sunday at 71.2%. Each day rests on about 52 flights, so a gap of 23 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 3131 runs late

One category carries most of the weight here. Carrier accounts for 61% of the 5,087 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
61%
National Airspace System
19%
Late-arriving aircraft
15%
Extreme weather
5%

The largest share of delay minutes, 61%, 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 3,118 of the 5,087 delay minutes reported here. The split is drawn from 5,087 delay minutes reported on DL 3131.

Cancellations are rare at 0.82%, below the national 1.81% 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

Badly late arrivals are rare here: only 4.7% 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 365 flights under DL 3131 in the data flew ATL to ECP. 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. 365 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 3131

For a booking, read DL 3131 as 83.8% on time with 0.82% cancelled over 365 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