Flight number record
DL 2100
Delta Air Lines · Salt Lake City to New Orleans
- Route
- SLC → MSY
- Departs
- 09:25
- Flights
- 360
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2100, check with Delta Air Lines.
DL 2100 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 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 360 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 2100's record is 10 points better than the US average of 77.3%. That gap is worth roughly 99 fewer late arrivals for every thousand flights.
Key figures
On time
87.2%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
3.4%
National rate is 8.3%
These figures cover 360 flights between September 2025 and August 2026. The median arrival is 9 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 2100 flies
DL 2100 flies SLC to MSY without a single fixed slot. Its most common scheduled departure was 09:25, used on 156 of 360 flights, with 09:55 (69 flights) and 09:29 (36 flights) next.
- Departs 09:25156 flights43.3%
- Departs 09:5569 flights19.2%
- Departs 09:2936 flights10.0%
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 09:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2100 runs 3 points better at 87.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 2100 next to SLC to MSY
Every carrier on SLC to MSY combined arrived on time 86.9% of the time across 455 flights, so DL 2100 is about level with it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2100thin sample | 360 | 87.2% | 50 min | 0.28% | A+ |
| All Delta Air Lines on SLC–MSY | 455 | 86.9% | 49 min | 0.44% | A+ |
| All carriers on SLC–MSY | 455 | 86.9% | 49 min | 0.44% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2100 quarter by quarter
DL 2100 did not run the same all year. Its best quarter was Oct–Dec 2025 at 92.0% on time and its weakest Jan–Mar 2026 at 81.8%, a swing of 10 points on roughly 72 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 flights90.0%
- Oct–Dec 202588 flights92.0%
- Jan–Mar 202689 flights81.8%
- Apr–Jun 202691 flights85.6%
- Jul–Sep 202662 flights88.7%
Scale runs 75% to 95%.
By weekday, DL 2100 did best on Tuesday at 92.3% on time and worst on Saturday at 78.8%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2100 runs when it is late
DL 2100 often beats the schedule: 124 of 358 completed flights, 35%, arrived 15 minutes or more early. The 46 late arrivals split 20 under half an hour, 14 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early124 flights34.6%
- Within 15 min188 flights52.5%
- 15–29 min late20 flights5.6%
- 30–59 min late14 flights3.9%
- 1–2 hours late8 flights2.2%
- 2+ hours late4 flights1.1%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
12 of 48 late departures made up the time and arrived on time, 25% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 2100
The latest arrival of the period was on 25 August 2026, 3 hours 6 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across August, June, April and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 25 August 2026 | 3 hours 6 minutes | Carrier |
| 29 August 2026 | 2 hours 32 minutes | Extreme weather |
| 12 June 2026 | 2 hours 27 minutes | Late-arriving aircraft |
| 10 April 2026 | 2 hours 15 minutes | Carrier |
| 18 February 2026 | 1 hour 58 minutes | Late-arriving aircraft |
Delay causes
Why DL 2100 runs late
Carrier accounts for 55% of the 2,287 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 28%Late-arriving aircraft
- 11%National Airspace System
- 6%Extreme weather
The largest share of delay minutes, 55%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,267 of the 2,287 delay minutes reported here. The split is drawn from 2,287 delay minutes reported on DL 2100.
Cancellations are rare at 0.28%, below the national 1.89% 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 3.4% 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 1,429 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 360 flights under DL 2100 in the data flew SLC to MSY. 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. 360 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 2100
For a booking, DL 2100 has one of the better records a US domestic flight can show: 87.2% on time and 0.28% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Salt Lake City International (SLC) delay statistics
- Louis Armstrong New Orleans International (MSY) 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
- Worst months to fly in the US, ranked by the data
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.