Flight number record
F9 2996
Frontier Airlines · Denver to Houston
- Route
- DEN → IAH
- Departs
- 21:06
- Flights
- 334
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 2996, check with Frontier Airlines.
F9 2996 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 334 flights, with a median arrival 11 minutes early.
Key figures
On time
73.9%
Arrivals under 15 minutes late, of 333 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
0.30%
National rate is 1.89%
1 hour+ late
9.3%
National rate is 8.3%
These figures cover 334 flights between September 2025 and August 2026. Beyond the headline rate, 9.3% 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 2996 flies
F9 2996 flies DEN to IAH without a single fixed slot. Its most common scheduled departure was 21:06, used on 172 of 334 flights, with 21:00 (53 flights) next.
- Departs 21:06172 flights51.5%
- Departs 21:0053 flights15.9%
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 21:06 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and F9 2996 runs 4 points better at 73.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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 2996 next to DEN to IAH
Every carrier on DEN to IAH combined arrived on time 79.6% of the time across 4,728 flights, so F9 2996 is 6 points behind it. Frontier flew 834 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% 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 2996thin sample | 334 | 73.9% | 61 min | 0.30% | C+ |
| All Frontier Airlines on DEN–IAH | 834 | 79.3% | 58 min | 0.48% | B+ |
| All carriers on DEN–IAH | 4,728 | 79.6% | 62 min | 0.30% | B+ |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 2996 quarter by quarter
F9 2996 did not run the same all year. Its best quarter was Oct–Dec 2025 at 82.8% on time and its weakest Jul–Sep 2026 at 54.1%, a swing of 29 points on roughly 84 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 202587 flights82.8%
- Jan–Mar 202676 flights80.3%
- Apr–Jun 202688 flights78.4%
- Jul–Sep 202662 flights54.1%
Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, F9 2996 did best on Saturday at 83.7% on time and worst on Monday at 64.2%. Each day rests on about 48 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 2996 runs when it is late
F9 2996 often beats the schedule: 141 of 333 completed flights, 42%, arrived 15 minutes or more early. The 87 late arrivals split 27 under half an hour, 29 between 30 and 60 minutes, and 31 an hour or more.
- 15+ min early141 flights42.3%
- Within 15 min105 flights31.5%
- 15–29 min late27 flights8.1%
- 30–59 min late29 flights8.7%
- 1–2 hours late21 flights6.3%
- 2+ hours late10 flights3.0%
Scale runs 0% to 100%.
Share of 333 completed flights by arrival against schedule.
26 of 104 late departures made up the time and arrived on time, 25% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for F9 2996
The latest arrival of the period was on 14 August 2026, 3 hours 48 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 August 2026 | 3 hours 48 minutes | Carrier |
| 29 July 2026 | 3 hours 30 minutes | Late-arriving aircraft |
| 3 August 2026 | 3 hours | Carrier |
| 12 September 2025 | 2 hours 57 minutes | Late-arriving aircraft |
| 10 March 2026 | 2 hours 44 minutes | Late-arriving aircraft |
Delay causes
Why F9 2996 runs late
Late-arriving aircraft accounts for 66% of the 5,294 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Late-arriving aircraft
- 26%Carrier
- 7%National Airspace System
- 1%Extreme weather
66% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,294 reported delay minutes here, that single category outweighs weather by 66 to one. The split is drawn from 5,294 delay minutes reported on F9 2996.
Cancellations are rare at 0.30%, 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
9.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 861 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 334 flights under F9 2996 in the data flew DEN 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. 334 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 2996
For a booking, F9 2996 is one of the weaker ways to fly DEN to IAH: 6 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
- DEN to IAH, every carrier and departure
- IAH to DEN, the return direction
- United Airlines 1720 on the same route90.1%
- United Airlines 475 on the same route74.1%
- United Airlines 320 on the same route96.7%
- United Airlines 1829 on the same route71.2%
- United Airlines 489 on the same route77.9%
- United Airlines 2419 on the same route78.9%
- Denver International (DEN) delay statistics
- George Bush Intercontinental (IAH) 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.