Airline on-time record

G4

Allegiant Air

Flights: 128,283
Period: June 2025 to May 2026
Airports: 25
US rank: #13 by volume

Allegiant Air 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 77.4%. The late ones land an hour and a half behind schedule. That rests on 128,283 flights, of which Provo (PVU) flew 1,649 at 87.2% on time.

Provo (PVU) is the most reliable of the 25 airports covered here at 87.2% on time across 1,649 flights.

On time

74.1%

National average is 77.4%

Avg delay

86 min

Across delayed flights only

Cancelled

0.63%

National rate is 1.80%

Largest base

SFB

10,205 departures, 69.5% on time

These figures cover 128,000 flights between June 2025 and May 2026. Beyond the headline rate, 10.0% 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.

Airport by airport

Where Allegiant Air runs well, and where it does not

The choice of airport is not cosmetic here. Provo (PVU) arrives on time 87.2% of the time; Fort Lauderdale (FLL) manages 62.5%. Sample sizes sit next to every figure, because a two-point gap across 4,573 flights means less than a ten-point one.

Allegiant Air on-time performance by departure airport
Airport	Flights	On time	Avg delay	Cancelled	Grade
SFB · Sanford	10,205	69.5%	80 min	0.66%	C+
PIE · St. Petersburg	9,137	76.0%	66 min	0.59%	B+
PGD · Punta Gorda	7,435	79.3%	70 min	0.65%	B+
LAS · Las Vegas	7,221	83.8%	73 min	0.43%	B+
AZA · Mesa	6,337	82.2%	68 min	0.21%	B+
FLL · Fort Lauderdale	4,573	62.5%	77 min	0.87%	D+
CVG · Cincinnati	3,526	75.5%	80 min	0.43%	B+
SRQ · Sarasota	3,446	82.7%	75 min	0.58%	B+
TYS · Knoxville	3,424	74.4%	82 min	0.44%	C+
AVL · Asheville	3,163	75.5%	84 min	0.63%	B+
VPS · Valparaiso	2,752	77.8%	75 min	0.18%	B+
GRR · Grand Rapids	2,567	76.3%	72 min	0.19%	B+
BNA · Nashville	2,319	76.1%	97 min	0.60%	B+
DSM · Des Moines	2,040	78.9%	98 min	1.47%	B
ABE · Allentown	2,002	79.9%	95 min	0.80%	B+
FNT · Flint	1,723	77.9%	69 min	0.12%	B+
ATW · Appleton	1,666	81.4%	109 min	1.38%	B
IND · Indianapolis	1,660	72.0%	78 min	0.48%	C+
PVU · Provo	1,649	87.2%	102 min	0.06%	A+
PIT · Pittsburgh	1,642	78.8%	96 min	0.73%	B+
MYR · Myrtle Beach	1,530	71.4%	99 min	2.03%	C
BLV · Belleville	1,381	71.3%	94 min	0.58%	C+
SNA · Santa Ana	1,176	72.7%	133 min	0.94%	C+
LCK · Columbus	1,155	69.1%	93 min	0.69%	C+
PIA · Peoria	1,145	75.1%	98 min	0.35%	B+

The spread between PVU and FLL is 25 points, wide enough that it should decide the booking. On a hundred trips that is 25 more arrivals inside the on-time window.

Route by route

Busiest Allegiant Air routes

These are the 25 routes Allegiant Air flies most often, each against its network-wide 74.1%. Route-level variation inside a single airline is routinely wider than the gap between two airlines nationally.

Busiest Allegiant Air routes by flight volume
Route	Flights	On time	Avg delay	Cancelled	Grade
AZA to PVU	705	79.8%	94 min	0.14%	B+
PVU to AZA	705	86.3%	146 min	0.14%	A+
AVL to FLL	657	63.7%	84 min	0.91%	D+
FLL to AVL	657	62.0%	83 min	0.91%	D+
ABE to SFB	645	79.9%	107 min	0.62%	B+
LAS to FAT	645	85.0%	82 min	0.47%	A+
FAT to LAS	645	78.8%	92 min	0.47%	B+
SFB to ABE	644	76.6%	76 min	0.47%	B+
SFB to TYS	640	63.8%	78 min	0.62%	D+
TYS to SFB	640	69.4%	82 min	0.62%	C+
AVL to SFB	525	73.7%	108 min	0.57%	C+
SFB to AVL	524	68.6%	99 min	0.57%	C+
PIE to TYS	517	73.6%	83 min	0.39%	C+
TYS to PIE	517	75.3%	93 min	0.39%	B+
PIE to AVL	507	77.1%	66 min	0.39%	B+
AVL to PIE	507	73.0%	67 min	0.59%	C+
TYS to FLL	484	55.1%	77 min	0.83%	D+
FLL to TYS	484	62.2%	86 min	0.83%	D+
BLI to LAS	457	91.8%	147 min	1.31%	A
LAS to BLI	456	87.6%	92 min	1.10%	A
MFE to LAS	439	82.6%	117 min	0.23%	B+
LAS to MFE	439	88.1%	66 min	0.23%	A+
CVG to VPS	429	76.3%	80 min	0.47%	B+
VPS to CVG	429	76.1%	82 min	0.47%	B+
SFB to GRR	412	70.6%	78 min	0.24%	C+

Departure window

The best time of day to fly Allegiant Air

Departure time matters more here than the choice of airport. The gap between the best and worst window is 32 points, against 25 points between the best and worst airport. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am16,388 flights91.1%
8am–11am24,536 flights84.8%
11am–2pm25,486 flights77.1%
2pm–5pm27,127 flights68.7%
5pm–8pm21,433 flights61.3%
8pm–5am13,313 flights59.5%

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 59.5% on time, against 91.1% 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.

Across the year

Allegiant Air through the calendar

Allegiant's year swings by 14 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.

Darker means more delays. Figures are on-time percentages.September best, December worst

December is the weak month at 69.0% on time, against 83.0% 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.

Across the week, Wednesday is the strongest day at 80.1% on time and Saturday the weakest at 70.8%. 9 points is a smaller lever than departure hour, but it is free.

Delay causes

What holds Allegiant Air up

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 2.82 million reported delay minutes.

Late-arriving aircraft
40%
Carrier
30%
National Airspace System
18%
Extreme weather
12%
Security
0%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure.

40% 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 2.82 million reported delay minutes here, that single category outweighs weather by 3 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.

Cancellations are rare at 0.63%, below the national 1.80% 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.

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.0% of arrivals land a full hour or more behind schedule, against 8.2% 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.

128,283 flights sit behind these numbers, which is a large enough sample that the headline rate is not moving on noise. Where a sub-group falls below 30 flights the site shows a dash instead of a percentage.

What to do with this

Booking Allegiant Air

Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 83.0% on time and December 69.0%, a swing of 14 points. If the dates move at all, move them out of December before you think about anything else.

Common questions

Allegiant Air reliability questions

How often is Allegiant Air delayed?

About one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 25.9% of the 128,283 flights in this analysis, against 22.6% nationally. Delayed flights are late by an hour and a half on average.

Which airport does Allegiant Air run best from?

Provo (PVU) leads at 87.2% on time across 1,649 flights. Fort Lauderdale (FLL) is at the other end on 62.5%, a gap of 25 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.

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

The 5am–8am departure window is the strongest at 91.1% on time. The 8pm–5am window is the weakest at 59.5%, 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?

December is the weakest month at 69.0% on time, compared with 83.0% in September. Across the year that is 14 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, June 2025 to May 2026. Updated monthly. How this data is collected.

Key figures