Flight number record
F9 3231
Frontier Airlines · Cleveland to Las Vegas
- Route
- CLE → LAS
- Departs
- 09:00
- Flights
- 301
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 3231, check with Frontier Airlines.
F9 3231 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 77.3%. The late ones land a little over an hour behind schedule. That rests on 301 flights, with a median arrival 3 minutes early.
Key figures
On time
73.6%
Arrivals under 15 minutes late, of 288 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
4.32%
National rate is 1.89%
1 hour+ late
8.0%
National rate is 8.3%
These figures cover 301 flights between September 2025 and August 2026. Beyond the headline rate, 8.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When F9 3231 flies
F9 3231 flies CLE to LAS without a single fixed slot. Its most common scheduled departure was 09:00, used on 67 of 301 flights, with 08:59 (34 flights) next.
- Departs 09:0067 flights22.3%
- Departs 08:5934 flights11.3%
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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and F9 3231 runs 10 points worse at 73.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
F9 3231 next to CLE to LAS
Every carrier on CLE to LAS combined arrived on time 75.7% of the time across 1,001 flights, so F9 3231 is 2 points behind it. Frontier flew 634 flights on the same city pair under all its flight numbers, including this one, and those ran 73.5% on time. Across its whole network Frontier Airlines managed 72.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 3231thin sample | 301 | 73.6% | 77 min | 4.32% | C− |
| All Frontier Airlines on CLE–LAS | 634 | 73.5% | 89 min | 2.52% | C |
| All carriers on CLE–LAS | 1,001 | 75.7% | 77 min | 1.80% | B |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 3231 quarter by quarter
F9 3231 did not run the same all year. Its best quarter was Apr–Jun 2026 at 81.6% on time and its weakest Jul–Sep 2026 at 63.6%, a swing of 18 points on roughly 75 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 202517 flights—
- Oct–Dec 202575 flights74.0%
- Jan–Mar 202657 flights64.3%
- Apr–Jun 202690 flights81.6%
- Jul–Sep 202662 flights63.6%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3231 did best on Thursday at 84.1% on time and worst on Wednesday at 65.7%. Each day rests on about 43 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 3231 runs when it is late
F9 3231 often beats the schedule: 83 of 288 completed flights, 29%, arrived 15 minutes or more early. The 76 late arrivals split 26 under half an hour, 27 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early83 flights28.8%
- Within 15 min129 flights44.8%
- 15–29 min late26 flights9.0%
- 30–59 min late27 flights9.4%
- 1–2 hours late14 flights4.9%
- 2+ hours late9 flights3.1%
Scale runs 0% to 100%.
Share of 288 completed flights by arrival against schedule.
18 of 77 late departures made up the time and arrived on time, 23% of them. In the other direction, 17 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at LAS.
The worst days
Worst days for F9 3231
The latest arrival of the period was on 15 December 2025, 10 hours 57 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 December 2025 | 10 hours 57 minutes | Late-arriving aircraft |
| 12 July 2026 | 8 hours 22 minutes | Late-arriving aircraft |
| 5 August 2026 | 8 hours 10 minutes | Late-arriving aircraft |
| 14 March 2026 | 7 hours 46 minutes | Late-arriving aircraft |
| 30 May 2026 | 5 hours 9 minutes | Late-arriving aircraft |
Delay causes
Why F9 3231 runs late
Late-arriving aircraft accounts for 63% of the 5,859 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Late-arriving aircraft
- 19%Carrier
- 15%National Airspace System
- 4%Extreme weather
63% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,859 reported delay minutes here, that single category outweighs weather by 16 to one. The split is drawn from 5,859 delay minutes reported on F9 3231.
Cancellations run at 4.32%, against 1.89% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
8.0% 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 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 301 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. 301 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, the cancellation rate is the figure to plan around on F9 3231: 4.32% of its 301 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- CLE to LAS, every carrier and departure
- LAS to CLE, the return direction
- Frontier Airlines 1821 on the same route73.7%
- Cleveland Hopkins International (CLE) 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.