Flight number record

F9 3206

Frontier Airlines · Denver to Houston

Route: DEN → IAH
Departs: 07:00
Flights: 315
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s F9 3206, check with Frontier Airlines.

F9 3206 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 315 flights, with a median arrival 13 minutes early.

Set against the rest of the country, F9 3206's record is 7 points better than the US average of 77.6%. That gap is worth roughly 74 fewer late arrivals for every thousand flights.

On time

85.0%

Arrivals under 15 minutes late, of 313 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

0.32%

National rate is 1.81%

1 hour+ late

3.5%

National rate is 8.1%

These figures cover 315 flights between July 2025 and June 2026. The median arrival is 13 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.

Schedule

When F9 3206 flies

F9 3206 flies DEN to IAH without a single fixed slot. Its most common scheduled departure was 07:00, used on 89 of 315 flights, with 06:50 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:0089 flights28.3%
Departs 06:5041 flights13.0%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and F9 3206 runs 4 points worse at 85.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

F9 3206 next to DEN to IAH

Every carrier on DEN to IAH combined arrived on time 78.2% of the time across 4,673 flights, so F9 3206 is 7 points ahead of it. Frontier flew 798 flights on the same city pair under all its flight numbers, including this one, and those ran 79.0% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight beats by 12 points.

F9 3206 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
F9 3206thin sample	315	85.0%	46 min	0.32%	A+
All Frontier Airlines on DEN–IAH	798	79.0%	61 min	0.13%	B+
All carriers on DEN–IAH	4,673	78.2%	62 min	0.21%	B+
Frontier Airlines, whole network	205,332	73.2%	84 min	1.85%	C

Across the year

F9 3206 quarter by quarter

Quarter by quarter F9 3206 held fairly steady: 88.1% in Jul–Sep 2025, 81.6% in Oct–Dec 2025, 89.5% in Jan–Mar 2026 and 82.4% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202584 flights88.1%
Oct–Dec 202587 flights81.6%
Jan–Mar 202658 flights89.5%
Apr–Jun 202686 flights82.4%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, F9 3206 did best on Tuesday at 91.7% on time and worst on Sunday at 77.6%. Each day rests on about 45 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why F9 3206 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 2,173 reported delay minutes.

Carrier
35%
National Airspace System
34%
Late-arriving aircraft
28%
Extreme weather
2%

34% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 749 minutes out of 2,173, against a national NAS share of 21%. The split is drawn from 2,173 delay minutes reported on F9 3206.

Cancellations are rare at 0.32%, below the national 1.81% 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

Badly late arrivals are rare here: only 3.5% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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. 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 315 flights under F9 3206 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. 315 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 3206

For a booking, F9 3206 has one of the better records a US domestic flight can show: 85.0% on time and 0.32% cancelled. That is a base rate, not a promise about any single day.

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