Flight number record

DL 835

Delta Air Lines · Salt Lake City to Atlanta

Route: SLC → ATL
Departs: 09:55
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 835, check with Delta Air Lines.

DL 835 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 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 349 flights, with a median arrival 7 minutes early.

Set against the rest of the country, DL 835's record is 10 points better than the US average of 77.6%. That gap is worth roughly 99 fewer late arrivals for every thousand flights.

On time

87.5%

Arrivals under 15 minutes late, of 345 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

0.86%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 2026. The median arrival is 7 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 835 flies

DL 835 flies SLC to ATL without a single fixed slot. Its most common scheduled departure was 09:55, used on 113 of 349 flights, with 09:25 (68 flights) and 09:59 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:55113 flights32.4%
Departs 09:2568 flights19.5%
Departs 09:5937 flights10.6%

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 09:55 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 835 runs 3 points better at 87.5%. 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 835 next to SLC to ATL

Every carrier on SLC to ATL combined arrived on time 87.3% of the time across 2,972 flights, so DL 835 is about level with it. Delta flew 2,966 flights on the same city pair under all its flight numbers, including this one, and those ran 87.4% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 6 points.

DL 835 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 835thin sample	349	87.5%	47 min	0.86%	A+
All Delta Air Lines on SLC–ATL	2,966	87.4%	63 min	0.54%	A+
All carriers on SLC–ATL	2,972	87.3%	65 min	0.54%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 835 quarter by quarter

DL 835 did not run the same all year. Its best quarter was Oct–Dec 2025 at 96.2% on time and its weakest Jan–Mar 2026 at 78.3%, a swing of 18 points on roughly 87 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights89.1%
Oct–Dec 202580 flights96.2%
Jan–Mar 202686 flights78.3%
Apr–Jun 202691 flights86.7%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 835 ranged from 84.0% on Thursday to 91.8% on Monday. With about 50 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 835 runs late

One category carries most of the weight here. Carrier accounts for 54% of the 2,013 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
54%
National Airspace System
30%
Extreme weather
9%
Late-arriving aircraft
7%

The largest share of delay minutes, 54%, 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 1,090 of the 2,013 delay minutes reported here. The split is drawn from 2,013 delay minutes reported on DL 835.

Cancellations are rare at 0.86%, 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 2.9% 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.

At 1,590 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on one other city pair in the data, including BOS to DFW (12), but none flew often enough under DL 835 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to ATL only.

One caution: this is a thin sample. 349 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 835

For a booking, DL 835 has one of the better records a US domestic flight can show: 87.5% on time and 0.86% 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