Flight number record
DL 1650
Delta Air Lines · Reno to Salt Lake City
- Route
- RNO → SLC
- Departs
- 06:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1650, check with Delta Air Lines.
DL 1650 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 365 flights, with a median arrival 10 minutes early.
Set against the rest of the country, DL 1650's record is 13 points better than the US average of 77.3%. That gap is worth roughly 131 fewer late arrivals for every thousand flights.
Key figures
On time
90.4%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
3.3%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 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.
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Schedule
When DL 1650 flies
DL 1650 flies RNO to SLC without a single fixed slot. Its most common scheduled departure was 06:00, used on 245 of 365 flights, with 05:30 (95 flights) next.
- Departs 06:00245 flights67.1%
- Departs 05:3095 flights26.0%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1650 runs level with that at 90.4%. 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 1650 next to RNO to SLC
Every carrier on RNO to SLC combined arrived on time 90.1% of the time across 1,201 flights, so DL 1650 is about level with it. Delta flew 730 flights on the same city pair under all its flight numbers, including this one, and those ran 89.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1650 | 365 | 90.4% | 65 min | 0.27% | A+ |
| All Delta Air Lines on RNO–SLC | 730 | 89.8% | 86 min | 0.27% | A+ |
| All carriers on RNO–SLC | 1,201 | 90.1% | 83 min | 0.17% | A+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1650 quarter by quarter
DL 1650 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 84.4%, a swing of 12 points on roughly 73 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 flights96.7%
- Oct–Dec 202592 flights86.8%
- Jan–Mar 202690 flights84.4%
- Apr–Jun 202691 flights95.6%
- Jul–Sep 202662 flights93.5%
Scale runs 75% to 100%.
By weekday, DL 1650 did best on Monday at 98.1% on time and worst on Thursday at 82.7%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1650 runs when it is late
DL 1650 often beats the schedule: 114 of 364 completed flights, 31%, arrived 15 minutes or more early. The 35 late arrivals split 16 under half an hour, 7 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early114 flights31.3%
- Within 15 min215 flights59.1%
- 15–29 min late16 flights4.4%
- 30–59 min late7 flights1.9%
- 1–2 hours late7 flights1.9%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
6 of 28 late departures made up the time and arrived on time, 21% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for DL 1650
The latest arrival of the period was on 19 March 2026, 4 hours 40 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across March, November, February and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 March 2026 | 4 hours 40 minutes | Carrier |
| 30 November 2025 | 3 hours 40 minutes | Late-arriving aircraft |
| 17 February 2026 | 3 hours 25 minutes | Extreme weather |
| 25 June 2026 | 3 hours | Late-arriving aircraft |
| 12 June 2026 | 2 hours 38 minutes | Carrier |
Delay causes
Why DL 1650 runs late
Carrier accounts for 50% of the 2,274 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 23%National Airspace System
- 17%Late-arriving aircraft
- 10%Extreme weather
The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,140 of the 2,274 delay minutes reported here. The split is drawn from 2,274 delay minutes reported on DL 1650.
Cancellations are rare at 0.27%, 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 3.3% 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.
Every one of the 365 flights under DL 1650 in the data flew RNO 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. 365 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 1650
For a booking, DL 1650 has one of the better records a US domestic flight can show: 90.4% on time and 0.27% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- RNO to SLC, every carrier and departure
- SLC to RNO, the return direction
- Delta Air Lines 1595 on the same route89.3%
- 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.