Flight number record

DL 2158

Delta Air Lines · Greer to Atlanta

Route: GSP → ATL
Departs: 11:44
Flights: 269
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2158, check with Delta Air Lines.

DL 2158 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 about an hour. That rests on 269 flights, with a median arrival 15 minutes early.

Set against the rest of the country, DL 2158's record is 15 points better than the US average of 77.6%. That gap is worth roughly 149 fewer late arrivals for every thousand flights.

On time

92.5%

Arrivals under 15 minutes late, of 266 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

1.12%

National rate is 1.81%

1 hour+ late

3.4%

National rate is 8.1%

These figures cover 269 flights between July 2025 and June 2026. The median arrival is 15 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 2158 flies

DL 2158 flies GSP to ATL without a single fixed slot. Its most common scheduled departure was 11:44, used on 52 of 269 flights, with 12:00 (52 flights) and 11:04 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:4452 flights19.3%
Departs 12:0052 flights19.3%
Departs 11:0433 flights12.3%

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 11:44 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 2158 runs 14 points better at 92.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2158 next to GSP to ATL

Every carrier on GSP to ATL combined arrived on time 90.4% of the time across 2,818 flights, so DL 2158 is 2 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 11 points.

DL 2158 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2158thin sample	269	92.5%	66 min	1.12%	A
All Delta Air Lines on GSP–ATL	2,818	90.4%	83 min	1.53%	A
All carriers on GSP–ATL	2,818	90.4%	83 min	1.53%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2158 quarter by quarter

Quarter by quarter DL 2158 held fairly steady: 94.5% in Jul–Sep 2025, 90.9% in Oct–Dec 2025, 91.7% in Jan–Mar 2026 and 92.1% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights94.5%
Oct–Dec 202577 flights90.9%
Jan–Mar 202662 flights91.7%
Apr–Jun 202639 flights92.1%

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

By weekday, DL 2158 ranged from 90.0% on Monday to 100.0% on Thursday. With about 38 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2158 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 64% of the 1,312 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.

Late-arriving aircraft
64%
Carrier
23%
National Airspace System
12%
Extreme weather
1%

64% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 1,312 reported delay minutes here, that single category outweighs weather by 50 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 1,312 delay minutes reported on DL 2158.

Cancellations sit at 1.12% 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.

The same number turns up on three other city pairs in the data, including ATL to GSP (206), DTW to IAH (36) and FLL to MSP (31), but none flew often enough under DL 2158 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to GSP to ATL only.

One caution: this is a thin sample. 269 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 2158

For a booking, DL 2158 has one of the better records a US domestic flight can show: 92.5% on time and 1.12% 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