Flight number record
DL 2031
Delta Air Lines · Orlando to Salt Lake City
- Route
- MCO → SLC
- Departs
- 10:30
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2031, check with Delta Air Lines.
DL 2031 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 364 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 2031's record is 7 points better than the US average of 77.3%. That gap is worth roughly 68 fewer late arrivals for every thousand flights.
Key figures
On time
84.1%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.82%
National rate is 1.89%
1 hour+ late
3.9%
National rate is 8.3%
These figures cover 364 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When DL 2031 flies
DL 2031 flies MCO to SLC without a single fixed slot. Its most common scheduled departure was 10:30, used on 62 of 364 flights, with 10:45 (57 flights) next.
- Departs 10:3062 flights17.0%
- Departs 10:4557 flights15.7%
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 10:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2031 runs level with that at 84.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 2031 next to MCO to SLC
Every carrier on MCO to SLC combined arrived on time 82.5% of the time across 1,483 flights, so DL 2031 is 2 points ahead of it. Delta flew 1,409 flights on the same city pair under all its flight numbers, including this one, and those ran 82.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2031thin sample | 364 | 84.1% | 73 min | 0.82% | B+ |
| All Delta Air Lines on MCO–SLC | 1,409 | 82.4% | 76 min | 0.71% | B+ |
| All carriers on MCO–SLC | 1,483 | 82.5% | 76 min | 0.67% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2031 quarter by quarter
Quarter by quarter DL 2031 held fairly steady: 84.4% in Oct–Dec 2025, 82.8% in Jan–Mar 2026, 83.3% in Apr–Jun 2026 and 82.3% in Jul–Sep 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202591 flights84.4%
- Jan–Mar 202690 flights82.8%
- Apr–Jun 202691 flights83.3%
- Jul–Sep 202662 flights82.3%
Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2031 did best on Saturday at 94.1% on time and worst on Sunday at 70.0%. Each day rests on about 52 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2031 runs when it is late
DL 2031 often beats the schedule: 118 of 358 completed flights, 33%, arrived 15 minutes or more early. The 57 late arrivals split 28 under half an hour, 15 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early118 flights33.0%
- Within 15 min183 flights51.1%
- 15–29 min late28 flights7.8%
- 30–59 min late15 flights4.2%
- 1–2 hours late4 flights1.1%
- 2+ hours late10 flights2.8%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
11 of 53 late departures made up the time and arrived on time, 21% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for DL 2031
The latest arrival of the period was on 14 December 2025, 14 hours 31 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 14 hours 31 minutes | Carrier |
| 23 November 2025 | 6 hours 38 minutes | Carrier |
| 30 June 2026 | 6 hours | Carrier |
| 27 March 2026 | 2 hours 55 minutes | Carrier |
| 22 April 2026 | 2 hours 48 minutes | Carrier |
Delay causes
Why DL 2031 runs late
Carrier accounts for 63% of the 4,174 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Carrier
- 21%Late-arriving aircraft
- 11%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 63%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,649 of the 4,174 delay minutes reported here. The split is drawn from 4,174 delay minutes reported on DL 2031.
Cancellations are rare at 0.82%, 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 3.9% 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.
At 1,931 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.
Every one of the 364 flights under DL 2031 in the data flew MCO to SLC. 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. 364 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 2031
For a booking, read DL 2031 as 84.1% on time with 0.82% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MCO to SLC, every carrier and departure
- SLC to MCO, the return direction
- Delta Air Lines 2025 on the same route93.6%
- Orlando International (MCO) delay statistics
- Salt Lake City International (SLC) 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.