Flight number record
UA 2601
United Airlines · Denver to Fort Myers
- Route
- DEN → RSW
- Departs
- 09:35
- Flights
- 286
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2601, check with United Airlines.
UA 2601 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 45 minutes. That rests on 286 flights, with a median arrival 12 minutes early.
Set against the rest of the country, UA 2601's record is 13 points better than the US average of 77.3%. That gap is worth roughly 128 fewer late arrivals for every thousand flights.
Key figures
On time
90.1%
Arrivals under 15 minutes late, of 284 completed flights
Avg delay
45 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
1.8%
National rate is 8.3%
These figures cover 286 flights between September 2025 and August 2026. The median arrival is 12 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 UA 2601 flies
UA 2601 flies DEN to RSW without a single fixed slot. Its most common scheduled departure was 09:35, used on 181 of 286 flights, with 09:50 (37 flights) next.
- Departs 09:35181 flights63.3%
- Departs 09:5037 flights12.9%
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 09:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 2601 runs 6 points better at 90.1%. 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
UA 2601 next to DEN to RSW
Every carrier on DEN to RSW combined arrived on time 80.0% of the time across 1,159 flights, so UA 2601 is 10 points ahead of it. United flew 788 flights on the same city pair under all its flight numbers, including this one, and those ran 85.1% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2601thin sample | 286 | 90.1% | 45 min | 0.00% | A+ |
| All United Airlines on DEN–RSW | 788 | 85.1% | 57 min | 0.00% | A+ |
| All carriers on DEN–RSW | 1,159 | 80.0% | 60 min | 0.17% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2601 quarter by quarter
Quarter by quarter UA 2601 held fairly steady: 87.0% in Oct–Dec 2025, 89.3% in Jan–Mar 2026, 96.4% in Apr–Jun 2026 and 90.2% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202578 flights87.0%
- Jan–Mar 202684 flights89.3%
- Apr–Jun 202656 flights96.4%
- Jul–Sep 202662 flights90.2%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2601 ranged from 84.6% on Saturday to 95.1% on Tuesday. With about 41 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 2601 runs when it is late
UA 2601 often beats the schedule: 120 of 284 completed flights, 42%, arrived 15 minutes or more early. The 28 late arrivals split 12 under half an hour, 11 between 30 and 60 minutes, and 5 an hour or more.
- 15+ min early120 flights42.3%
- Within 15 min136 flights47.9%
- 15–29 min late12 flights4.2%
- 30–59 min late11 flights3.9%
- 1–2 hours late3 flights1.1%
- 2+ hours late2 flights0.7%
Scale runs 0% to 100%.
Share of 284 completed flights by arrival against schedule.
6 of 22 late departures made up the time and arrived on time, 27% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for UA 2601
The latest arrival of the period was on 30 September 2025, 2 hours 53 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 September 2025 | 2 hours 53 minutes | Late-arriving aircraft |
| 16 March 2026 | 2 hours 1 minute | National Airspace System |
| 14 March 2026 | 1 hour 53 minutes | National Airspace System |
| 2 August 2026 | 1 hour 36 minutes | National Airspace System |
| 20 July 2026 | 1 hour 10 minutes | Late-arriving aircraft |
Delay causes
Why UA 2601 runs late
National Airspace System accounts for 48% of the 1,262 delay minutes carriers reported here, and the remaining four split what is left.
- 48%National Airspace System
- 27%Late-arriving aircraft
- 25%Carrier
48% 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 606 minutes out of 1,262, against a national NAS share of 21%. The split is drawn from 1,262 delay minutes reported on UA 2601.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are 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 1.8% 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 1,607 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 RSW to EWR (213) and SEA to DEN (166), but none flew often enough under UA 2601 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to RSW only.
One caution: this is a thin sample. 286 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 UA 2601
For a booking, UA 2601 has one of the better records a US domestic flight can show: 90.1% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- DEN to RSW, every carrier and departure
- RSW to DEN, the return direction
- Denver International (DEN) delay statistics
- Southwest Florida International (RSW) delay statistics
- United Airlines on-time record
- Every United Airlines 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 United Airlines’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.