Flight number record
F9 777
Frontier Airlines · Denver to Las Vegas
- Route
- DEN → LAS
- Departs
- 22:29
- Flights
- 357
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 777, check with Frontier Airlines.
F9 777 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 357 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.6%, so F9 777 runs 4 points behind the country as a whole. Across a thousand flights that is about 41 extra late arrivals.
Key figures
On time
73.5%
Arrivals under 15 minutes late, of 355 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
0.56%
National rate is 1.81%
1 hour+ late
9.6%
National rate is 8.1%
These figures cover 357 flights between July 2025 and June 2026. Beyond the headline rate, 9.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When F9 777 flies
F9 777 flies DEN to LAS without a single fixed slot. Its most common scheduled departure was 22:29, used on 252 of 357 flights, with 22:30 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 22:29252 flights70.6%
- Departs 22:3039 flights10.9%
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 22:29 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and F9 777 runs 3 points better at 73.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
F9 777 next to DEN to LAS
Every carrier on DEN to LAS combined arrived on time 75.3% of the time across 7,108 flights, so F9 777 is 2 points behind it. Frontier flew 1,557 flights on the same city pair under all its flight numbers, including this one, and those ran 76.3% on time. Across its whole network Frontier Airlines managed 73.2%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 777thin sample | 357 | 73.5% | 66 min | 0.56% | C+ |
| All Frontier Airlines on DEN–LAS | 1,557 | 76.3% | 71 min | 0.96% | B+ |
| All carriers on DEN–LAS | 7,108 | 75.3% | 63 min | 0.66% | B+ |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 777 quarter by quarter
F9 777 did not run the same all year. Its best quarter was Oct–Dec 2025 at 79.8% on time and its weakest Apr–Jun 2026 at 64.8%, a swing of 15 points on roughly 89 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 202592 flights71.7%
- Oct–Dec 202584 flights79.8%
- Jan–Mar 202690 flights78.4%
- Apr–Jun 202691 flights64.8%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, F9 777 did best on Tuesday at 87.8% on time and worst on Monday at 59.6%. Each day rests on about 51 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Delay causes
Why F9 777 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 6,184 reported delay minutes.
- 36%Late-arriving aircraft
- 36%National Airspace System
- 27%Carrier
- 2%Extreme weather
36% 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 6,184 reported delay minutes here, that single category outweighs weather by 22 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 6,184 delay minutes reported on F9 777.
Cancellations are rare at 0.56%, below the national 1.81% 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
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 357 flights under F9 777 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. 357 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 777
For a booking, read F9 777 as 73.5% on time with 0.56% cancelled over 357 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 655 on the same route68.4%
- United Airlines 2316 on the same route93.8%
- United Airlines 526 on the same route81.7%
- Frontier Airlines 1993 on the same route78.0%
- Frontier Airlines 2015 on the same route90.0%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.