Flight number record

DL 2100

Delta Air Lines · Salt Lake City to New Orleans

Route: SLC → MSY
Departs: 09:25
Flights: 354
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2100, check with Delta Air Lines.

DL 2100 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 354 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 2100's record is 9 points better than the US average of 77.6%. That gap is worth roughly 85 fewer late arrivals for every thousand flights.

On time

86.1%

Arrivals under 15 minutes late, of 352 completed flights

Avg delay

42 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.81%

1 hour+ late

2.8%

National rate is 8.1%

These figures cover 354 flights between July 2025 and June 2026. The median arrival is 10 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 2100 flies

DL 2100 flies SLC to MSY without a single fixed slot. Its most common scheduled departure was 09:25, used on 123 of 354 flights, with 09:55 (69 flights) and 09:30 (61 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:25123 flights34.7%
Departs 09:5569 flights19.5%
Departs 09:3061 flights17.2%

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 09:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 2100 runs 2 points better at 86.1%. 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 2100 next to SLC to MSY

Every carrier on SLC to MSY combined arrived on time 86.1% of the time across 455 flights, so DL 2100 is about level with it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 5 points.

DL 2100 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2100thin sample	354	86.1%	42 min	0.28%	A+
All Delta Air Lines on SLC–MSY	455	86.1%	42 min	0.44%	A+
All carriers on SLC–MSY	455	86.1%	42 min	0.44%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 89 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 202586 flights84.9%
Oct–Dec 202588 flights92.0%
Jan–Mar 202689 flights81.8%
Apr–Jun 202691 flights85.6%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2100 did best on Tuesday at 92.5% on time and worst on Thursday at 79.6%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2100 runs late

One category carries most of the weight here. Carrier accounts for 57% of the 2,043 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
57%
Late-arriving aircraft
28%
National Airspace System
15%

The largest share of delay minutes, 57%, 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 1,156 of the 2,043 delay minutes reported here. The split is drawn from 2,043 delay minutes reported on DL 2100.

Cancellations are rare at 0.28%, 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 2.8% 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 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. 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 354 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. 354 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: 86.1% on time and 0.28% 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