Flight number record

DL 841

Delta Air Lines · Salt Lake City to Los Angeles

Route: SLC → LAX
Departs: 15:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 841, check with Delta Air Lines.

DL 841 lands a B+, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 4 minutes early.

On time

79.5%

Arrivals under 15 minutes late, of 365 completed flights

Avg delay

44 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

3.8%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 4 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 841 flies

DL 841 flies SLC to LAX without a single fixed slot. Its most common scheduled departure was 15:00, used on 94 of 365 flights, with 15:10 (74 flights) and 15:35 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:0094 flights25.8%
Departs 15:1074 flights20.3%
Departs 15:3549 flights13.4%

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 15:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 841 runs 7 points better at 79.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 841 next to SLC to LAX

Every carrier on SLC to LAX combined arrived on time 86.2% of the time across 4,146 flights, so DL 841 is 7 points behind it. Delta flew 2,454 flights on the same city pair under all its flight numbers, including this one, and those ran 85.4% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 2 points.

DL 841 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 841	365	79.5%	44 min	0.00%	B+
All Delta Air Lines on SLC–LAX	2,454	85.4%	51 min	0.41%	A+
All carriers on SLC–LAX	4,146	86.2%	55 min	0.46%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 841 quarter by quarter

Quarter by quarter DL 841 held fairly steady: 79.3% in Jul–Sep 2025, 76.1% in Oct–Dec 2025, 83.3% in Jan–Mar 2026 and 79.1% in Apr–Jun 2026. A spread of 7 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 flights76.1%
Jan–Mar 202690 flights83.3%
Apr–Jun 202691 flights79.1%

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

By weekday, DL 841 did best on Tuesday at 86.8% on time and worst on Sunday at 67.3%. Each day rests on about 52 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 841 runs late

One category carries most of the weight here. Carrier accounts for 48% of the 3,262 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
48%
Late-arriving aircraft
32%
National Airspace System
20%
Extreme weather
0%

The largest share of delay minutes, 48%, 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 1,561 of the 3,262 delay minutes reported here. The split is drawn from 3,262 delay minutes reported on DL 841.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are 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 3.8% 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 590 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 365 flights under DL 841 in the data flew SLC to LAX. 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 841

For a booking, DL 841 is one of the weaker ways to fly SLC to LAX: 7 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