Flight number record
F9 2350
Frontier Airlines · Las Vegas to Denver
- Route
- LAS → DEN
- Departs
- 06:00
- Flights
- 273
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 2350, check with Frontier Airlines.
F9 2350 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 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 273 flights, with a median arrival 10 minutes early.
Set against the rest of the country, F9 2350's record is 9 points better than the US average of 77.6%. That gap is worth roughly 87 fewer late arrivals for every thousand flights.
Key figures
On time
86.3%
Arrivals under 15 minutes late, of 270 completed flights
Avg delay
96 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.81%
1 hour+ late
3.3%
National rate is 8.1%
These figures cover 273 flights between July 2025 and June 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.
Schedule
When F9 2350 flies
F9 2350 flies LAS to DEN without a single fixed slot. Its most common scheduled departure was 06:00, used on 137 of 273 flights, with 06:30 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 06:00137 flights50.2%
- Departs 06:3042 flights15.4%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
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 F9 2350 runs 3 points worse at 86.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
F9 2350 next to LAS to DEN
Every carrier on LAS to DEN combined arrived on time 77.0% of the time across 7,088 flights, so F9 2350 is 9 points ahead of it. Frontier flew 1,554 flights on the same city pair under all its flight numbers, including this one, and those ran 79.1% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 2350thin sample | 273 | 86.3% | 96 min | 1.10% | A |
| All Frontier Airlines on LAS–DEN | 1,554 | 79.1% | 90 min | 0.97% | B+ |
| All carriers on LAS–DEN | 7,088 | 77.0% | 66 min | 0.87% | B+ |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 2350 quarter by quarter
F9 2350 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.6% on time and its weakest Jul–Sep 2025 at 66.7%, a swing of 27 points on roughly 68 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 202536 flights66.7%
- Oct–Dec 202579 flights83.1%
- Jan–Mar 202679 flights91.1%
- Apr–Jun 202679 flights93.6%
Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, F9 2350 did best on Thursday at 95.5% on time and worst on Monday at 75.6%. Each day rests on about 39 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Delay causes
Why F9 2350 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 68% of the 3,555 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 68%Late-arriving aircraft
- 18%National Airspace System
- 13%Carrier
68% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,555 reported delay minutes here, that single category outweighs weather by 68 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,555 delay minutes reported on F9 2350.
Cancellations sit at 1.10% against a national 1.81%, 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 3.3% land an hour or more behind schedule, against 8.1% 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.
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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
Every one of the 273 flights under F9 2350 in the data flew LAS to DEN. 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. 273 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 2350
For a booking, F9 2350 has one of the better records a US domestic flight can show: 86.3% on time and 1.10% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAS to DEN, every carrier and departure
- DEN to LAS, the return direction
- United Airlines 596 on the same route97.2%
- Frontier Airlines 1994 on the same route84.0%
- United Airlines 2108 on the same route70.2%
- Frontier Airlines 4612 on the same route71.1%
- Frontier Airlines 3540 on the same route67.2%
- Harry Reid International (LAS) delay statistics
- Denver International (DEN) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.