Flight number record
F9 3418
Frontier Airlines · Las Vegas to San Antonio
- Route
- LAS → SAT
- Departs
- 15:43
- Flights
- 269
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 3418, check with Frontier Airlines.
F9 3418 lands a B+, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 269 flights, with a median arrival 9 minutes early.
Set against the rest of the country, F9 3418's record is 6 points better than the US average of 77.3%. That gap is worth roughly 55 fewer late arrivals for every thousand flights.
Key figures
On time
82.8%
Arrivals under 15 minutes late, of 267 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
0.74%
National rate is 1.89%
1 hour+ late
6.7%
National rate is 8.3%
These figures cover 269 flights between September 2025 and August 2026. The median arrival is 9 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.
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Schedule
When F9 3418 flies
F9 3418 flies LAS to SAT without a single fixed slot. Its most common scheduled departure was 15:43, used on 44 of 269 flights, with 15:24 (35 flights) and 06:00 (28 flights) next.
- Departs 15:4344 flights16.4%
- Departs 15:2435 flights13.0%
- Departs 06:0028 flights10.4%
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 15:43 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and F9 3418 runs 11 points better at 82.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
F9 3418 next to LAS to SAT
Every carrier on LAS to SAT combined arrived on time 74.4% of the time across 2,032 flights, so F9 3418 is 8 points ahead of it. Across its whole network Frontier Airlines managed 72.7%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 3418thin sample | 269 | 82.8% | 63 min | 0.74% | B+ |
| All Frontier Airlines on LAS–SATthin sample | 304 | 81.5% | 62 min | 0.66% | B+ |
| All carriers on LAS–SAT | 2,032 | 74.4% | 53 min | 0.34% | C+ |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 3418 quarter by quarter
F9 3418 did not run the same all year. Its best quarter was Oct–Dec 2025 at 93.4% on time and its weakest Jul–Sep 2026 at 71.0%, a swing of 22 points on roughly 67 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 202521 flights—
- Oct–Dec 202561 flights93.4%
- Jan–Mar 202646 flights87.0%
- Apr–Jun 202679 flights77.9%
- Jul–Sep 202662 flights71.0%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3418 did best on Saturday at 94.1% on time and worst on Sunday at 76.5%. Each day rests on about 38 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 3418 runs when it is late
F9 3418 often beats the schedule: 90 of 267 completed flights, 34%, arrived 15 minutes or more early. The 46 late arrivals split 11 under half an hour, 17 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early90 flights33.7%
- Within 15 min131 flights49.1%
- 15–29 min late11 flights4.1%
- 30–59 min late17 flights6.4%
- 1–2 hours late13 flights4.9%
- 2+ hours late5 flights1.9%
Scale runs 0% to 100%.
Share of 267 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 42 departures that left 15 minutes late or more, only 5 made it up before arrival. 9 flights left on time and still arrived late.
The worst days
Worst days for F9 3418
The latest arrival of the period was on 28 June 2026, 4 hours 13 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 June 2026 | 4 hours 13 minutes | Late-arriving aircraft |
| 31 July 2026 | 3 hours 33 minutes | Late-arriving aircraft |
| 23 July 2026 | 2 hours 52 minutes | Late-arriving aircraft |
| 21 June 2026 | 2 hours 27 minutes | Late-arriving aircraft |
| 9 August 2026 | 2 hours 3 minutes | National Airspace System |
Delay causes
Why F9 3418 runs late
Late-arriving aircraft accounts for 49% of the 2,882 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Late-arriving aircraft
- 33%Carrier
- 17%National Airspace System
- 2%Extreme weather
49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,882 reported delay minutes here, that single category outweighs weather by 28 to one. The split is drawn from 2,882 delay minutes reported on F9 3418.
Cancellations are rare at 0.74%, below the national 1.89% 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
6.7% 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 about an hour, which a normal layover absorbs.
The 1,069 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.
Every one of the 269 flights under F9 3418 in the data flew LAS to SAT. 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. 269 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 3418
For a booking, read F9 3418 as 82.8% on time with 0.74% cancelled over 269 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LAS to SAT, every carrier and departure
- SAT to LAS, the return direction
- Harry Reid International (LAS) delay statistics
- San Antonio International (SAT) 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.