Flight number record
DL 1409
Delta Air Lines · Salt Lake City to Raleigh
- Route
- SLC → RDU
- Departs
- 17:50
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1409, check with Delta Air Lines.
DL 1409 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 252 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 1409's record is 6 points better than the US average of 77.3%. That gap is worth roughly 61 fewer late arrivals for every thousand flights.
Key figures
On time
83.4%
Arrivals under 15 minutes late, of 247 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
1.98%
National rate is 1.89%
1 hour+ late
4.9%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. The median arrival is 8 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 1409 flies
DL 1409 flies SLC to RDU without a single fixed slot. Its most common scheduled departure was 17:50, used on 151 of 252 flights, with 17:45 (31 flights) and 17:37 (30 flights) next.
- Departs 17:50151 flights59.9%
- Departs 17:4531 flights12.3%
- Departs 17:3730 flights11.9%
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 17:50 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 1409 runs 15 points better at 83.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 1409 next to SLC to RDU
Every carrier on SLC to RDU combined arrived on time 85.6% of the time across 373 flights, so DL 1409 is 2 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1409thin sample | 252 | 83.4% | 52 min | 1.98% | B |
| All Delta Air Lines on SLC–RDU | 373 | 85.6% | 55 min | 1.34% | A |
| All carriers on SLC–RDU | 373 | 85.6% | 55 min | 1.34% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1409 quarter by quarter
DL 1409 did not run the same all year. Its best quarter was Jan–Mar 2026 at 92.9% on time and its weakest Jul–Sep 2026 at 67.7%, a swing of 25 points on roughly 84 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.
- Oct–Dec 202510 flights—
- Jan–Mar 202689 flights92.9%
- Apr–Jun 202691 flights83.5%
- Jul–Sep 202662 flights67.7%
Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1409 did best on Thursday at 91.7% on time and worst on Wednesday at 72.2%. Each day rests on about 36 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1409 runs when it is late
DL 1409 often beats the schedule: 84 of 247 completed flights, 34%, arrived 15 minutes or more early. The 41 late arrivals split 19 under half an hour, 10 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early84 flights34.0%
- Within 15 min122 flights49.4%
- 15–29 min late19 flights7.7%
- 30–59 min late10 flights4.0%
- 1–2 hours late8 flights3.2%
- 2+ hours late4 flights1.6%
Scale runs 0% to 100%.
Share of 247 completed flights by arrival against schedule.
A late pushback is often recovered here: of 45 departures that left 15 minutes late or more, 16 still arrived on time. 12 flights left on time and still arrived late.
The worst days
Worst days for DL 1409
The latest arrival of the period was on 30 June 2026, 4 hours 28 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in June 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 June 2026 | 4 hours 28 minutes | Carrier |
| 29 May 2026 | 3 hours 5 minutes | Carrier |
| 24 June 2026 | 2 hours 2 minutes | Carrier |
| 4 June 2026 | 2 hours 1 minute | Carrier |
| 5 July 2026 | 1 hour 46 minutes | National Airspace System |
Delay causes
Why DL 1409 runs late
Carrier accounts for 55% of the 2,125 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 26%National Airspace System
- 19%Late-arriving aircraft
The largest share of delay minutes, 55%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,166 of the 2,125 delay minutes reported here. The split is drawn from 2,125 delay minutes reported on DL 1409.
Cancellations sit at 1.98% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.9% 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 1,824 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.
The same number turns up on two other city pairs in the data, including ATL to PHL (110) and PHL to ATL (110), but none flew often enough under DL 1409 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to RDU only.
One caution: this is a thin sample. 252 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 1409
For a booking, read DL 1409 as 83.4% on time with 1.98% cancelled over 252 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Salt Lake City International (SLC) delay statistics
- Raleigh-Durham International (RDU) 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.