Flight number record

DL 2833

Delta Air Lines · Atlanta to St. Louis

Route: ATL → STL
Departs: 20:59
Flights: 255
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2833, check with Delta Air Lines.

DL 2833 lands a B, 2 points worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 255 flights, with a median arrival 5 minutes early.

On time

76.0%

Arrivals under 15 minutes late, of 250 completed flights

Avg delay

58 min

Across delayed arrivals only, not all flights

Cancelled

1.18%

National rate is 1.81%

1 hour+ late

7.6%

National rate is 8.1%

These figures cover 255 flights between July 2025 and June 2026. The median arrival is 5 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 2833 flies

DL 2833 flies ATL to STL without a single fixed slot. Its most common scheduled departure was 20:59, used on 48 of 255 flights, with 18:25 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:5948 flights18.8%
Departs 18:2532 flights12.5%

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 20:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 2833 runs 6 points better at 76.0%. 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 2833 next to ATL to STL

Every carrier on ATL to STL combined arrived on time 82.4% of the time across 3,706 flights, so DL 2833 is 6 points behind it. Delta flew 2,371 flights on the same city pair under all its flight numbers, including this one, and those ran 84.7% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 6 points.

DL 2833 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2833thin sample	255	76.0%	58 min	1.18%	B
All Delta Air Lines on ATL–STL	2,371	84.7%	55 min	1.98%	B
All carriers on ATL–STL	3,706	82.4%	56 min	1.54%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2833 quarter by quarter

Quarter by quarter DL 2833 held fairly steady: 77.8% in Jul–Sep 2025, 76.8% in Oct–Dec 2025 and 73.3% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights77.8%
Oct–Dec 202584 flights76.8%
Jan–Mar 20264 flights—
Apr–Jun 202676 flights73.3%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2833 did best on Tuesday at 86.8% on time and worst on Thursday at 55.6%. Each day rests on about 36 flights, so a gap of 31 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2833 runs late

One category carries most of the weight here. Carrier accounts for 55% of the 3,451 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
55%
Late-arriving aircraft
18%
National Airspace System
16%
Extreme weather
11%

The largest share of delay minutes, 55%, 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 1,894 of the 3,451 delay minutes reported here. The split is drawn from 3,451 delay minutes reported on DL 2833.

Cancellations sit at 1.18% against a national 1.81%, which is ordinary. Diversions add another 0.78%.

Connections and routes

What a delay on this flight costs

7.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

Every one of the 255 flights under DL 2833 in the data flew ATL to STL. 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. 255 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 2833

For a booking, DL 2833 is one of the weaker ways to fly ATL to STL: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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