Flight number record

DL 1590

Delta Air Lines · Atlanta to Columbia

Route: ATL → CAE
Departs: 09:10
Flights: 256
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1590, check with Delta Air Lines.

DL 1590 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 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 55 minutes. That rests on 256 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 1590's record is 12 points better than the US average of 77.6%. That gap is worth roughly 122 fewer late arrivals for every thousand flights.

On time

89.8%

Arrivals under 15 minutes late, of 254 completed flights

Avg delay

54 min

Across delayed arrivals only, not all flights

Cancelled

0.78%

National rate is 1.81%

1 hour+ late

2.0%

National rate is 8.1%

These figures cover 256 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 1590 flies

DL 1590 flies ATL to CAE without a single fixed slot. Its most common scheduled departure was 09:10, used on 45 of 256 flights, with 10:59 (38 flights) and 09:16 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:1045 flights17.6%
Departs 10:5938 flights14.8%
Departs 09:1635 flights13.7%

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 09:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 1590 runs 6 points better at 89.8%. 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 1590 next to ATL to CAE

Every carrier on ATL to CAE combined arrived on time 83.6% of the time across 1,870 flights, so DL 1590 is 6 points ahead of it. Delta flew 1,866 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 8 points.

DL 1590 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1590thin sample	256	89.8%	54 min	0.78%	A+
All Delta Air Lines on ATL–CAE	1,866	83.5%	65 min	1.29%	B
All carriers on ATL–CAE	1,870	83.6%	65 min	1.28%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1590 quarter by quarter

Quarter by quarter DL 1590 held fairly steady: 92.4% in Jul–Sep 2025, 88.0% in Oct–Dec 2025, 86.1% in Jan–Mar 2026 and 90.2% 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 flights92.4%
Oct–Dec 202575 flights88.0%
Jan–Mar 202638 flights86.1%
Apr–Jun 202651 flights90.2%

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

By weekday, DL 1590 did best on Friday at 100.0% on time and worst on Tuesday at 79.5%. Each day rests on about 37 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1590 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 1,408 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
53%
Extreme weather
22%
Late-arriving aircraft
15%
National Airspace System
10%

Extreme weather accounts for 22% 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 3.5 times the usual weather exposure. The split is drawn from 1,408 delay minutes reported on DL 1590.

Cancellations are rare at 0.78%, 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 2.0% 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.

The same number turns up on six other city pairs in the data, including CAE to ATL (194), CLT to DTW (36) and AUS to DTW (24), but none flew often enough under DL 1590 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to CAE only.

One caution: this is a thin sample. 256 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 1590

For a booking, DL 1590 has one of the better records a US domestic flight can show: 89.8% on time and 0.78% cancelled. That is a base rate, not a promise about any single 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