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DelayAtlas

Carrier performance at one airport

G4→PIE

Allegiant Air at St. Pete-Clearwater International

Departures
9,002
Period
September 2025 to August 2026
Routes
25
Rank here
#1 of 1
B+GRADE

Allegiant Air at St. Petersburg lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 9,002 flights, with a median arrival 5 minutes early.

Measured against the airport rather than the country, Allegiant Air runs half a point ahead of the 77.2% weighted average across all carriers at PIE. That is the comparison worth making: every operator here works the same runways, the same airspace and the same weather.

Key figures

On time

77.2%

8,914 completed departures

Avg delay

71 min

Across delayed flights only

Cancelled

0.64%

At PIE, this carrier only

Rank here

#1

Of 1 carriers clearing the floor at PIE

These figures cover 9,002 flights between September 2025 and August 2026. Beyond the headline rate, 8.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

Against the competition

Every carrier at PIE, ranked

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance of all carriers departing PIE
AirlineFlightsOn timeAvg delayCancelledGrade
Allegiant Air (this page)9,00277.2%71 min0.64%B+

Route by route

Where Allegiant Air flies from PIE

Allegiant Air operates 25 routes out of PIE with enough volume to report. Route records inside one carrier at one airport still spread widely, because a short shuttle and a transcontinental have very different exposure to a late inbound.

Allegiant Air routes from PIE
RouteFlightsOn timeAvg delayCancelledGrade
PIE to TYS · Knoxville52575.1%93 min0.76%B+
PIE to AVL · Asheville51177.6%75 min0.59%B+
PIE to GRR · Grand Rapids38175.1%62 min0.26%B+
PIE to CVG · Cincinnatithin sample35373.7%86 min0.57%C+
PIE to EYW · Key Westthin sample31380.5%55 min0.64%B+
PIE to ABE · Allentownthin sample27976.2%112 min0.72%B+
PIE to FNT · Flintthin sample27374.6%59 min0.00%C+
PIE to IND · Indianapolisthin sample22473.5%72 min0.45%C+
PIE to BGR · Bangorthin sample21485.3%38 min0.93%A+
PIE to USA · Concordthin sample21268.9%53 min1.42%C
PIE to FWA · Fort Waynethin sample19178.9%68 min0.00%B+
PIE to ATW · Appletonthin sample18283.8%76 min1.10%B
PIE to SGF · Springfieldthin sample18075.3%69 min0.00%B+
PIE to DSM · Des Moinesthin sample17978.4%85 min1.68%B
PIE to LEX · Lexingtonthin sample17471.9%54 min1.15%C
PIE to BLV · Bellevillethin sample17074.6%55 min0.59%C+
PIE to HTS · Huntingtonthin sample16868.9%72 min0.00%C+
PIE to LCK · Columbusthin sample16773.5%94 min0.60%C+
PIE to SYR · Syracusethin sample16285.2%63 min0.00%A+
PIE to CID · Cedar Rapidsthin sample16083.9%65 min1.88%B
PIE to PIA · Peoriathin sample15980.4%63 min0.00%B+
PIE to PIT · Pittsburghthin sample15860.1%107 min0.00%D+
PIE to SBN · South Bendthin sample14285.9%60 min0.00%A+
PIE to ALB · Albanythin sample13788.1%43 min1.46%A
PIE to CAK · Akronthin sample13777.0%59 min0.73%B+

Departure window

Best time of day for this operation

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 32 points, against half a point between the best and worst carrier.

  • 5am–8am1,802 flights92.9%
  • 8am–11am1,528 flights90.1%
  • 11am–2pm1,767 flights72.0%
  • 2pm–5pm1,775 flights73.5%
  • 5pm–8pm1,565 flights60.6%
  • 8pm–5am565 flights66.5%

Scale runs 50% to 100%.

The 5pm–8pm window is where this operation falls apart: 60.6% on time, against 92.9% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 1,802 flights scheduled in it.

Across the year

Seasonal pattern

On-time rate by calendar month81J81F73M83A81M76J72J77A83S80O78N69D
Darker means more delays. Figures are on-time percentages.September best, December worst

December is the weak month at 68.9% on time, against 83.4% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. July was the busiest month here, with 969 flights.

Delay causes

What holds this operation up

  • Late-arriving aircraft
    45%
  • National Airspace System
    23%
  • Carrier
    21%
  • Extreme weather
    10%
  • Security
    0%

45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 144,000 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 143,548 reported delay minutes.

Cancellations are rare at 0.64%, 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.

8.3% 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 a little over an hour, which a normal layover absorbs.

The sample behind these figures is 9,002 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 83.4% on time and December 68.9%, a swing of 15 points. If the dates move at all, move them out of December before you think about anything else. 8,914 completed flights over 12 months sit behind that.

Common questions

Allegiant Air at PIE

How often is Allegiant Air at PIE delayed?

Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.8% of the 9,002 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.

How reliable is Allegiant Air at PIE compared with the rest of the country?

77.2% of flights arrive on time here against a national 77.3%, a difference of half a point against it. That is worth a B+ on this site's grading scale.

What time of day has the fewest delays on Allegiant Air at PIE?

The 5am–8am departure window is the strongest at 92.9% on time. The 5pm–8pm window is the weakest at 60.6%, 32 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.

How bad are December delays on Allegiant Air at PIE?

December is the weakest month at 68.9% on time, compared with 83.4% in September. Across the year that is 15 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.

Related

Where to go next

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.