Flight number record

F9 2015

Frontier Airlines · Denver to Las Vegas

Route: DEN → LAS
Departs: 07:00
Flights: 254
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 254 flights, with a median arrival 11 minutes early.

Set against the rest of the country, F9 2015's record is 12 points better than the US average of 77.6%. That gap is worth roughly 124 fewer late arrivals for every thousand flights.

On time

90.0%

Arrivals under 15 minutes late, of 250 completed flights

Avg delay

77 min

Across delayed arrivals only, not all flights

Cancelled

1.57%

National rate is 1.81%

1 hour+ late

5.2%

National rate is 8.1%

These figures cover 254 flights between July 2025 and June 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.

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 108 of 254 flights, with 06:00 (44 flights) and 06:10 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00108 flights42.5%
Departs 06:0044 flights17.3%
Departs 06:1032 flights12.6%

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 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 90.0%. 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 2015 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 2015 is 15 points ahead of 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%, which this flight beats by 17 points.

F9 2015 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 2015thin sample	254	90.0%	77 min	1.57%	A
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 2015 quarter by quarter

Quarter by quarter F9 2015 held fairly steady: 92.6% in Jul–Sep 2025, 87.5% in Oct–Dec 2025, 88.3% in Jan–Mar 2026 and 92.9% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202554 flights92.6%
Oct–Dec 202583 flights87.5%
Jan–Mar 202661 flights88.3%
Apr–Jun 202656 flights92.9%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

Delay causes

Why F9 2015 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 48% of the 1,926 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.

Late-arriving aircraft
48%
Carrier
40%
National Airspace System
11%
Extreme weather
1%

48% 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 1,926 reported delay minutes here, that single category outweighs weather by 48 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 1,926 delay minutes reported on F9 2015.

Cancellations sit at 1.57% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

5.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, 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. 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 254 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. 254 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 90.0% on time with 1.57% cancelled over 254 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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.

Key figures