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DelayAtlas

Carrier route record

F9CLEPHX

Frontier Airlines · Cleveland to Phoenix

Flights
318
Period
July 2025 to June 2026
Share of route
33%
Carriers
3
BGRADE

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

Frontier on CLE to PHX lands a B, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 318 flights, with a median arrival 8 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Frontier on CLE to PHX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

Key figures

On time

79.0%

Arrivals under 15 minutes late, of 309 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

2.20%

National rate is 1.81%

Whole route

77.9%

Every carrier on CLE to PHX, 956 flights

These figures cover 318 flights between July 2025 and June 2026. Beyond the headline rate, 9.4% 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.

Carrier by carrier

Frontier against every carrier on CLE to PHX

Frontier flew 318 of the 956 flights on CLE to PHX, about 33% of it. Its 79.0% on time is about level with the route as a whole at 77.9%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from American at 81.8% to Southwest at 74.1%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

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 by carrier on CLE to PHX
AirlineFlightsOn timeAvg delayCancelledGrade
American Airlinesthin sample26781.8%63 min0.37%B+
Frontier Airlines (this page)thin sample31879.0%72 min2.20%B
Southwest Airlines37174.1%46 min0.00%C+

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

  • 5am–8am78 flights87.7%
  • 8am–11am26 flights
  • 11am–2pm22 flights
  • 2pm–5pm66 flights73.8%
  • 5pm–8pm5 flights
  • 8pm–5am121 flights77.3%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 87.7% of the time, against 73.8% for the afternoon window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 121 flights scheduled in it.

Across the year

Frontier on CLE to PHX through the year

  • Jul–Sep 202578 flights87.0%
  • Oct–Dec 202575 flights64.4%
  • Jan–Mar 202674 flights74.6%
  • Apr–Jun 202691 flights87.5%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 79.0% on time across 318 flights.

Frontier on CLE to PHX did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.5% on time and its weakest Oct–Dec 2025 at 64.4%, a swing of 23 points on roughly 80 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.

Across the week, Tuesday is the strongest day at 86.1% on time and Friday the weakest at 73.5%. 13 points is a smaller lever than departure hour, but it is free.

On-time rate by day of the week83.3Mon86.1Tue81.1Wed76.6Thu73.5Fri77.3Sat77.1Sun
Monday: 83.3 percent on time. Tuesday: 86.1 percent on time. Wednesday: 81.1 percent on time. Thursday: 76.6 percent on time. Friday: 73.5 percent on time. Saturday: 77.3 percent on time. Sunday: 77.1 percent on time

Delay causes

Why Frontier runs late on this route

One category carries most of the weight here. Carrier accounts for 44% of the 4,701 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.

  • Carrier
    44%
  • Late-arriving aircraft
    29%
  • National Airspace System
    25%
  • Extreme weather
    2%

The largest share of delay minutes, 44%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,069 of the 4,701 delay minutes reported here. The split is drawn from 4,701 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 87.7% on time here.

Cancellations sit at 2.20% against a national 1.81%, which is ordinary. Diversions add another 0.63%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.4% 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.

At 1,737 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 72.7% on time across 319 flights, 6 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.

One caution: this is a thin sample. 318 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 Frontier on CLE to PHX

Put together: treat all of this as provisional. 318 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 79.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 309 completed flights over 12 months sit behind that.

Related

Where to go next

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.