Flight number record
DL 841
Delta Air Lines · Salt Lake City to Los Angeles
- Route
- SLC → LAX
- Departs
- 15:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 841, check with Delta Air Lines.
DL 841 lands a B+, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 365 flights, with a median arrival 3 minutes early.
Key figures
On time
78.1%
Arrivals under 15 minutes late, of 365 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
3.0%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 3 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.
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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 97 of 365 flights, with 15:35 (49 flights) and 15:40 (49 flights) next.
- Departs 15:0097 flights26.6%
- Departs 15:3549 flights13.4%
- Departs 15:4049 flights13.4%
Scale runs 0% to 100%.
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 71.9%, and DL 841 runs 6 points better at 78.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 841 next to SLC to LAX
Every carrier on SLC to LAX combined arrived on time 85.6% of the time across 4,196 flights, so DL 841 is 8 points behind it. Delta flew 2,459 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 81.1%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 841 | 365 | 78.1% | 39 min | 0.00% | B+ |
| All Delta Air Lines on SLC–LAX | 2,459 | 83.5% | 52 min | 0.53% | B+ |
| All carriers on SLC–LAX | 4,196 | 85.6% | 55 min | 0.48% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 841 quarter by quarter
DL 841 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.3% on time and its weakest Jul–Sep 2026 at 69.4%, a swing of 14 points on roughly 73 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 202530 flights83.3%
- Oct–Dec 202592 flights76.1%
- Jan–Mar 202690 flights83.3%
- Apr–Jun 202691 flights79.1%
- Jul–Sep 202662 flights69.4%
Scale runs 60% to 90%.
By weekday, DL 841 did best on Friday at 84.6% on time and worst on Sunday at 69.2%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 841 runs when it is late
Most of the lateness is short. 45 of the 80 late arrivals were under half an hour behind, and 11 reached an hour or more.
- 15+ min early71 flights19.5%
- Within 15 min214 flights58.6%
- 15–29 min late45 flights12.3%
- 30–59 min late24 flights6.6%
- 1–2 hours late7 flights1.9%
- 2+ hours late4 flights1.1%
Scale runs 0% to 100%.
Share of 365 completed flights by arrival against schedule.
19 of 79 late departures made up the time and arrived on time, 24% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at LAX.
The worst days
Worst days for DL 841
The latest arrival of the period was on 18 February 2026, 2 hours 22 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 February 2026 | 2 hours 22 minutes | Late-arriving aircraft |
| 4 May 2026 | 2 hours 16 minutes | Late-arriving aircraft |
| 27 December 2025 | 2 hours 11 minutes | Late-arriving aircraft |
| 2 January 2026 | 2 hours 10 minutes | Carrier |
| 10 November 2025 | 1 hour 39 minutes | Carrier |
Delay causes
Why DL 841 runs late
Carrier accounts for 43% of the 3,091 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 38%Late-arriving aircraft
- 19%National Airspace System
- 0%Extreme weather
38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,091 reported delay minutes here, that single category outweighs weather by 38 to one. The split is drawn from 3,091 delay minutes reported on DL 841.
Cancellations are rare at 0.00%, below the national 1.89% 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 3.0% land an hour or more behind schedule, against 8.3% 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.
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: 8 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.
Related
Where to go next
- SLC to LAX, every carrier and departure
- LAX to SLC, the return direction
- Delta Air Lines 829 on the same route86.5%
- Delta Air Lines 1087 on the same route91.1%
- Delta Air Lines 1142 on the same route73.7%
- Delta Air Lines 1095 on the same route91.1%
- Delta Air Lines 1161 on the same route81.4%
- Salt Lake City International (SLC) delay statistics
- Los Angeles International (LAX) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.