Flight number record

F9 3231

Frontier Airlines · Cleveland to Las Vegas

Route: CLE → LAS
Departs: 07:30
Flights: 276
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s F9 3231, check with Frontier Airlines.

F9 3231 lands a B, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 276 flights, with a median arrival 5 minutes early.

On time

78.1%

Arrivals under 15 minutes late, of 270 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

2.17%

National rate is 1.81%

1 hour+ late

6.3%

National rate is 8.1%

These figures cover 276 flights between July 2025 and June 2026. The median arrival is 5 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 3231 flies

F9 3231 flies CLE to LAS without a single fixed slot. Its most common scheduled departure was 07:30, used on 43 of 276 flights, with 08:59 (34 flights) and 08:00 (30 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:3043 flights15.6%
Departs 08:5934 flights12.3%
Departs 08:0030 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 07:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and F9 3231 runs 11 points worse at 78.1%. 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 3231 next to CLE to LAS

Every carrier on CLE to LAS combined arrived on time 77.9% of the time across 981 flights, so F9 3231 is about level with it. Frontier flew 609 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 5 points.

F9 3231 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 3231thin sample	276	78.1%	73 min	2.17%	B
All Frontier Airlines on CLE–LAS	609	76.3%	90 min	1.31%	B
All carriers on CLE–LAS	981	77.9%	78 min	1.02%	B
Frontier Airlines, whole network	205,332	73.2%	84 min	1.85%	C

Across the year

F9 3231 quarter by quarter

F9 3231 did not run the same all year. Its best quarter was Jul–Sep 2025 at 92.6% on time and its weakest Jan–Mar 2026 at 64.3%, a swing of 28 points on roughly 69 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 202554 flights92.6%
Oct–Dec 202575 flights74.0%
Jan–Mar 202657 flights64.3%
Apr–Jun 202690 flights81.6%

Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, F9 3231 did best on Thursday at 86.7% on time and worst on Sunday at 67.6%. Each day rests on about 39 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why F9 3231 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 56% of the 4,321 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
56%
National Airspace System
19%
Carrier
17%
Extreme weather
7%

56% 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 4,321 reported delay minutes here, that single category outweighs weather by 8 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 4,321 delay minutes reported on F9 3231.

Cancellations sit at 2.17% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

6.3% 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.

At 1,824 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.

Every one of the 276 flights under F9 3231 in the data flew CLE 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. 276 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 3231

For a booking, read F9 3231 as 78.1% on time with 2.17% cancelled over 276 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