Flight number record
DL 2247
Delta Air Lines · Salt Lake City to Chicago
- Route
- SLC → ORD
- Departs
- 08:20
- Flights
- 334
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2247, check with Delta Air Lines.
DL 2247 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 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 334 flights, with a median arrival 7 minutes early.
Set against the rest of the country, DL 2247's record is 8 points better than the US average of 77.3%. That gap is worth roughly 78 fewer late arrivals for every thousand flights.
Key figures
On time
85.1%
Arrivals under 15 minutes late, of 329 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.90%
National rate is 1.89%
1 hour+ late
5.8%
National rate is 8.3%
These figures cover 334 flights between September 2025 and August 2026. The median arrival is 7 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 2247 flies
DL 2247 flies SLC to ORD without a single fixed slot. Its most common scheduled departure was 08:20, used on 105 of 334 flights, with 07:50 (94 flights) and 08:00 (55 flights) next.
- Departs 08:20105 flights31.4%
- Departs 07:5094 flights28.1%
- Departs 08:0055 flights16.5%
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 08:20 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2247 runs level with that at 85.1%. 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 2247 next to SLC to ORD
Every carrier on SLC to ORD combined arrived on time 74.9% of the time across 3,246 flights, so DL 2247 is 10 points ahead of it. Delta flew 1,013 flights on the same city pair under all its flight numbers, including this one, and those ran 75.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2247thin sample | 334 | 85.1% | 62 min | 0.90% | A+ |
| All Delta Air Lines on SLC–ORD | 1,013 | 75.4% | 68 min | 1.09% | B |
| All carriers on SLC–ORD | 3,246 | 74.9% | 94 min | 1.48% | C |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2247 quarter by quarter
Quarter by quarter DL 2247 held fairly steady: 83.3% in Jul–Sep 2025, 83.7% in Oct–Dec 2025, 85.6% in Jan–Mar 2026, 86.2% in Apr–Jun 2026 and 86.4% in Jul–Sep 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights83.3%
- Oct–Dec 202592 flights83.7%
- Jan–Mar 202690 flights85.6%
- Apr–Jun 202660 flights86.2%
- Jul–Sep 202662 flights86.4%
Scale runs 75% to 90%.
By weekday, DL 2247 ranged from 80.9% on Thursday to 87.5% on Tuesday. With about 48 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2247 runs when it is late
DL 2247 often beats the schedule: 102 of 329 completed flights, 31%, arrived 15 minutes or more early. The 49 late arrivals split 14 under half an hour, 16 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early102 flights31.0%
- Within 15 min178 flights54.1%
- 15–29 min late14 flights4.3%
- 30–59 min late16 flights4.9%
- 1–2 hours late13 flights4.0%
- 2+ hours late6 flights1.8%
Scale runs 0% to 100%.
Share of 329 completed flights by arrival against schedule.
8 of 48 late departures made up the time and arrived on time, 17% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for DL 2247
The latest arrival of the period was on 13 September 2025, 3 hours 4 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 September 2025 | 3 hours 4 minutes | National Airspace System |
| 15 March 2026 | 2 hours 52 minutes | National Airspace System |
| 12 March 2026 | 2 hours 48 minutes | Carrier |
| 10 November 2025 | 2 hours 42 minutes | National Airspace System |
| 30 November 2025 | 2 hours 20 minutes | National Airspace System |
Delay causes
Why DL 2247 runs late
National Airspace System accounts for 54% of the 3,017 delay minutes carriers reported here, and the remaining four split what is left.
- 54%National Airspace System
- 46%Carrier
- 0%Late-arriving aircraft
54% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,621 minutes out of 3,017, against a national NAS share of 21%. The split is drawn from 3,017 delay minutes reported on DL 2247.
Cancellations sit at 0.90% against a national 1.89%, which is ordinary. Diversions add another 0.60%.
Connections and routes
What a delay on this flight costs
5.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 1,250 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.
The same number turns up on one other city pair in the data, including ORD to SLC (116), but none flew often enough under DL 2247 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to ORD only.
One caution: this is a thin sample. 334 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 2247
For a booking, DL 2247 has one of the better records a US domestic flight can show: 85.1% on time and 0.90% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to ORD, every carrier and departure
- ORD to SLC, the return direction
- Delta Air Lines 2413 on the same route71.1%
- Delta Air Lines 2377 on the same route68.2%
- United Airlines 1382 on the same route74.3%
- United Airlines 1502 on the same route81.6%
- Salt Lake City International (SLC) delay statistics
- Chicago O'Hare International (ORD) 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.