Flight number record

F9 1756

Frontier Airlines · Los Angeles to Houston

Route: LAX → IAH
Departs: 14:23
Flights: 306
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s F9 1756, check with Frontier Airlines.

F9 1756 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 306 flights, with a median arrival 3 minutes late.

The national on-time rate over the same period is 77.6%, so F9 1756 runs 10 points behind the country as a whole. Across a thousand flights that is about 100 extra late arrivals.

On time

67.6%

Arrivals under 15 minutes late, of 299 completed flights

Avg delay

70 min

Across delayed arrivals only, not all flights

Cancelled

1.96%

National rate is 1.81%

1 hour+ late

14.7%

National rate is 8.1%

These figures cover 306 flights between July 2025 and June 2026. Beyond the headline rate, 14.7% 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 1756 flies

F9 1756 flies LAX to IAH without a single fixed slot. Its most common scheduled departure was 14:23, used on 35 of 306 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:2335 flights11.4%

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 14:23 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and F9 1756 runs 5 points worse at 67.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

F9 1756 next to LAX to IAH

Every carrier on LAX to IAH combined arrived on time 84.6% of the time across 5,255 flights, so F9 1756 is 17 points behind it. Across its whole network Frontier Airlines managed 73.2%, which this flight trails by 6 points.

F9 1756 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 1756thin sample	306	67.6%	70 min	1.96%	C
All Frontier Airlines on LAX–IAHthin sample	332	68.2%	71 min	2.11%	C
All carriers on LAX–IAH	5,255	84.6%	64 min	0.59%	B+
Frontier Airlines, whole network	205,332	73.2%	84 min	1.85%	C

Across the year

F9 1756 quarter by quarter

F9 1756 did not run the same all year. Its best quarter was Apr–Jun 2026 at 74.2% on time and its weakest Oct–Dec 2025 at 63.4%, a swing of 11 points on roughly 77 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 flights65.8%
Oct–Dec 202583 flights63.4%
Jan–Mar 202653 flights65.4%
Apr–Jun 202691 flights74.2%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, F9 1756 did best on Wednesday at 90.0% on time and worst on Friday at 56.5%. Each day rests on about 44 flights, so a gap of 34 points is worth noticing but could still narrow in another year.

Delay causes

Why F9 1756 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 6,763 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
51%
Carrier
30%
National Airspace System
18%
Extreme weather
0%

51% 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 6,763 reported delay minutes here, that single category outweighs weather by 51 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 6,763 delay minutes reported on F9 1756.

Cancellations sit at 1.96% against a national 1.81%, which is ordinary. Diversions add another 0.33%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 14.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

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 306 flights under F9 1756 in the data flew LAX to IAH. 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. 306 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 1756

For a booking, F9 1756 is a flight to put a long connection behind. 14.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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