Flight number record
F9 2015
Frontier Airlines · Denver to Las Vegas
- Route
- DEN → LAS
- Departs
- 07:00
- Flights
- 253
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 2015, check with Frontier Airlines.
F9 2015 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 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 253 flights, with a median arrival 11 minutes early.
Set against the rest of the country, F9 2015's record is 11 points better than the US average of 77.3%. That gap is worth roughly 111 fewer late arrivals for every thousand flights.
Key figures
On time
88.4%
Arrivals under 15 minutes late, of 249 completed flights
Avg delay
109 min
Across delayed arrivals only, not all flights
Cancelled
1.58%
National rate is 1.89%
1 hour+ late
6.0%
National rate is 8.3%
These figures cover 253 flights between September 2025 and August 2026. The median arrival is 11 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 F9 2015 flies
F9 2015 flies DEN to LAS without a single fixed slot. Its most common scheduled departure was 07:00, used on 73 of 253 flights, with 06:10 (68 flights) and 06:00 (44 flights) next.
- Departs 07:0073 flights28.9%
- Departs 06:1068 flights26.9%
- Departs 06:0044 flights17.4%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and F9 2015 runs level with that at 88.4%. 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
F9 2015 next to DEN to LAS
Every carrier on DEN to LAS combined arrived on time 75.5% of the time across 7,168 flights, so F9 2015 is 13 points ahead of it. Frontier flew 1,626 flights on the same city pair under all its flight numbers, including this one, and those ran 75.8% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight beats by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 2015thin sample | 253 | 88.4% | 109 min | 1.58% | A |
| All Frontier Airlines on DEN–LAS | 1,626 | 75.8% | 78 min | 1.05% | B |
| All carriers on DEN–LAS | 7,168 | 75.5% | 64 min | 0.64% | B+ |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 2015 quarter by quarter
Quarter by quarter F9 2015 held fairly steady: 87.5% in Oct–Dec 2025, 88.3% in Jan–Mar 2026, 92.9% in Apr–Jun 2026 and 83.3% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202517 flights—
- Oct–Dec 202583 flights87.5%
- Jan–Mar 202661 flights88.3%
- Apr–Jun 202656 flights92.9%
- Jul–Sep 202636 flights83.3%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
Arrival by arrival
How late F9 2015 runs when it is late
F9 2015 often beats the schedule: 95 of 249 completed flights, 38%, arrived 15 minutes or more early. When F9 2015 is late it tends to be very late: 15 of its 29 late arrivals were an hour or more behind, and 5 were two hours or more.
- 15+ min early95 flights38.2%
- Within 15 min125 flights50.2%
- 15–29 min late11 flights4.4%
- 30–59 min late3 flights1.2%
- 1–2 hours late10 flights4.0%
- 2+ hours late5 flights2.0%
Scale runs 0% to 100%.
Share of 249 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 26 departures that left 15 minutes late or more, only 3 made it up before arrival. 6 flights left on time and still arrived late.
The worst days
Worst days for F9 2015
The latest arrival of the period was on 20 July 2026, 16 hours 36 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 July 2026 | 16 hours 36 minutes | Late-arriving aircraft |
| 12 December 2025 | 6 hours 8 minutes | Late-arriving aircraft |
| 2 July 2026 | 4 hours 25 minutes | Late-arriving aircraft |
| 22 September 2025 | 2 hours 39 minutes | Carrier |
| 8 January 2026 | 2 hours 23 minutes | Late-arriving aircraft |
Delay causes
Why F9 2015 runs late
Late-arriving aircraft accounts for 63% of the 3,153 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Late-arriving aircraft
- 30%Carrier
- 7%National Airspace System
- 0%Extreme weather
63% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,153 reported delay minutes here, that single category outweighs weather by 63 to one. The split is drawn from 3,153 delay minutes reported on F9 2015.
Cancellations sit at 1.58% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
6.0% 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 close to two hours, which a normal layover absorbs.
The 628 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.
Every one of the 253 flights under F9 2015 in the data flew DEN to LAS. 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. 253 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 F9 2015
For a booking, read F9 2015 as 88.4% on time with 1.58% cancelled over 253 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to LAS, every carrier and departure
- LAS to DEN, the return direction
- United Airlines 2316 on the same route94.2%
- United Airlines 655 on the same route66.8%
- Frontier Airlines 777 on the same route72.1%
- Frontier Airlines 1993 on the same route80.3%
- United Airlines 526 on the same route81.1%
- Frontier Airlines 2349 on the same route69.9%
- Denver International (DEN) delay statistics
- Harry Reid International (LAS) delay statistics
- Frontier Airlines on-time record
- Every Frontier Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Frontier 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.