Flight number record
F9 1755
Frontier Airlines · Houston to Los Angeles
- Route
- IAH → LAX
- Departs
- 11:56
- Flights
- 330
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 1755, check with Frontier Airlines.
F9 1755 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 330 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.6%, so F9 1755 runs 5 points behind the country as a whole. Across a thousand flights that is about 49 extra late arrivals.
Key figures
On time
72.7%
Arrivals under 15 minutes late, of 326 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
1.21%
National rate is 1.81%
1 hour+ late
8.0%
National rate is 8.1%
These figures cover 330 flights between July 2025 and June 2026. Beyond the headline rate, 8.0% 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 1755 flies
F9 1755 flies IAH to LAX without a single fixed slot. Its most common scheduled departure was 11:56, used on 35 of 330 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 11:5635 flights10.6%
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 11:56 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and F9 1755 runs 6 points worse at 72.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
F9 1755 next to IAH to LAX
Every carrier on IAH to LAX combined arrived on time 83.6% of the time across 5,260 flights, so F9 1755 is 11 points behind it. 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 1755thin sample | 330 | 72.7% | 59 min | 1.21% | C |
| All Frontier Airlines on IAH–LAXthin sample | 332 | 72.6% | 60 min | 1.20% | C |
| All carriers on IAH–LAX | 5,260 | 83.6% | 64 min | 0.57% | B+ |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 1755 quarter by quarter
F9 1755 did not run the same all year. Its best quarter was Jul–Sep 2025 at 78.9% on time and its weakest Oct–Dec 2025 at 61.4%, a swing of 18 points on roughly 83 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 202579 flights78.9%
- Oct–Dec 202583 flights61.4%
- Jan–Mar 202677 flights73.7%
- Apr–Jun 202691 flights76.9%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, F9 1755 did best on Wednesday at 91.2% on time and worst on Friday at 62.7%. Each day rests on about 47 flights, so a gap of 29 points is worth noticing but could still narrow in another year.
Delay causes
Why F9 1755 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 5,275 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.
- 50%Late-arriving aircraft
- 26%Carrier
- 15%National Airspace System
- 8%Extreme weather
50% 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 5,275 reported delay minutes here, that single category outweighs weather by 6 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 5,275 delay minutes reported on F9 1755.
Cancellations sit at 1.21% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
8.0% of arrivals land an hour or more late, close to the national 8.1%. 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 about an hour, which a normal layover absorbs.
The 1,379 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 330 flights under F9 1755 in the data flew IAH to LAX. 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. 330 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 1755
For a booking, F9 1755 is one of the weaker ways to fly IAH to LAX: 11 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- IAH to LAX, every carrier and departure
- LAX to IAH, the return direction
- United Airlines 2460 on the same route87.4%
- Delta Air Lines 1216 on the same route94.2%
- United Airlines 1743 on the same route80.5%
- United Airlines 2600 on the same route91.8%
- United Airlines 2095 on the same route73.6%
- United Airlines 469 on the same route87.0%
- George Bush Intercontinental (IAH) delay statistics
- Los Angeles International (LAX) 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.