Route Reliability

Route reliability

Philadelphia (PHL) to Miami (MIA): which airline is most on time?

On-time arrivals, cancellations and long delays for every airline that reported nonstop flights from Philadelphia, PA (PHL) to Miami, FL (MIA), September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

Philadelphia, PAMiami, FL

Check a route

Three-letter airport codes, nonstop U.S. domestic flights. One direction at a time.

Route at a glance · September 2025 to August 2026

PHL to MIA

Philadelphia, PA to Miami, FL

On time
74.6%vs 75.6% U.S. average About average
Cancelled
2.9%vs 1.9% U.S. average Worse than average
60+ min late
8.3%vs 8.1% U.S. average About average
Scheduled flights
3,286in 12 months3 airlines
Most reliable airline
American Airlines76.4% on time · 2,724 flights

On time about as often as the U.S. average, with more cancellations.

Compared with all U.S. flights, September 2025 to August 2026. “About average” means within 1.5 points for on time, 0.3 for cancelled and 1 for 60+ minutes late.

Airlines on this route

Ranked by on-time arrival

Airlines from PHL to MIA, September 2025 to August 2026. Rates are shares of all scheduled flights.
Airline On time Cancelled 60+ min late Avg delay when late Diverted Flights
1. American Airlines Most reliable 76.4% 2.8% 7.5% 79 min 0.2% 2,724
2. Spirit Airlines Small sample (under 300 flights) 75.6% 3.6% 5.7% 55 min 0.5% 193
3. Frontier Airlines 61.2% 3.0% 16.0% 80 min 0.3% 369

On time = arrived within 15 minutes of schedule. Avg delay when late = average arrival delay of flights 15+ minutes late. "Most reliable" needs at least 300 flights in 12 months. Tap a heading to sort.

What this means

American Airlines has the strongest record on this route.

  • American Airlines had the best on-time record from Philadelphia (PHL) to Miami (MIA): 76.4% of its 2,724 scheduled flights arrived within 15 minutes of schedule, compared with 61.2% for Frontier Airlines.
  • 2.9% of flights on this route were cancelled (about 1 in 34), 1.0 points higher than the U.S. average of 1.9%.
  • 8.3% of flights, about 1 in 12, arrived an hour or more late. When a flight was late (15+ minutes), the average arrival delay was 78 min.
  • Overall, 74.6% of flights on this route arrived on time, 1.0 points lower than the U.S. average of 75.6%.
  • Over the last 3 years, November was the most reliable month on this route (85.5% on time) and August the least reliable (60.4%).
  • Cancellations peaked in August, when 4.4% of flights were cancelled.
  • Flights scheduled to depart 6 am to 7 am were the most punctual (85.6% on time); flights scheduled to depart 9 pm to 10 pm were the least (53.8%).
  • In the other direction, Miami (MIA) to Philadelphia (PHL), 72.5% of flights were on time and 3.3% were cancelled. Compare airlines MIA to PHL.

Best and worst months to fly PHL to MIA

Jan 72.2%
Feb 78.4%
Mar 75.5%
Apr 81.5%
May 77.6%
Jun 71.2%
Jul 62.6%
Aug 60.4%
Sep 77.1%
Oct 80.9%
Nov 85.5%
Dec 74.3%
Share of scheduled flights on time 12-month average 74.6%
All airlines combined, by calendar month, September 2023 to August 2026 (3 years pooled). Scale starts at zero.
Show as table
PeriodOn timeFlights
January 72.2% 830
February 78.4% 802
March 75.5% 878
April 81.5% 895
May 77.6% 780
June 71.2% 760
July 62.6% 776
August 60.4% 848
September 77.1% 695
October 80.9% 774
November 85.5% 759
December 74.3% 822
Best and worst calendar month by airline, September 2023 to August 2026.
AirlineBest monthWorst month
American Airlines November (87.3%) August (60.5%)
Spirit Airlines September (89.2%) January (65.8%)
Frontier Airlines September (78.9%) August (54.3%)

Month by month, last 12 months

Sep 79.3%
Oct 79.7%
Nov 79.7%
Dec 74.7%
Jan 74.1%
Feb 75.4%
Mar 78.2%
Apr 80.0%
May 84.1%
Jun 73.7%
Jul 61.8%
Aug 60.4%
Share of scheduled flights on time U.S. average 75.6%
All airlines combined, September 2025 to August 2026. Scale starts at zero.
Show as table
PeriodOn timeFlights
Sep 2025 79.3% 217
Oct 2025 79.7% 246
Nov 2025 79.7% 256
Dec 2025 74.7% 277
Jan 2026 74.1% 278
Feb 2026 75.4% 272
Mar 2026 78.2% 293
Apr 2026 80.0% 295
May 2026 84.1% 246
Jun 2026 73.7% 289
Jul 2026 61.8% 309
Aug 2026 60.4% 308

Best and worst departure times

<6a 84.4%
6a 85.6%
7a Insufficient sample
8a 81.6%
9a 74.8%
10a 74.3%
11a 67.3%
12p 75.0%
1p 72.2%
2p 66.9%
3p 83.5%
4p 72.2%
5p 62.4%
6p 70.0%
7p 72.7%
8p 77.9%
9p 53.8%
10p Insufficient sample
Share of scheduled flights on time
By scheduled local departure hour at PHL, September 2025 to August 2026. Hours with no scheduled flights are omitted. Scale starts at zero.
Show as table
PeriodOn timeFlights
Departing before 6 am 84.4% 186
Departing 6 am to 7 am 85.6% 374
Departing 7 am to 8 am Insufficient sample 11
Departing 8 am to 9 am 81.6% 375
Departing 9 am to 10 am 74.8% 107
Departing 10 am to 11 am 74.3% 381
Departing 11 am to noon 67.3% 104
Departing noon to 1 pm 75.0% 88
Departing 1 pm to 2 pm 72.2% 205
Departing 2 pm to 3 pm 66.9% 130
Departing 3 pm to 4 pm 83.5% 97
Departing 4 pm to 5 pm 72.2% 241
Departing 5 pm to 6 pm 62.4% 290
Departing 6 pm to 7 pm 70.0% 230
Departing 7 pm to 8 pm 72.7% 242
Departing 8 pm to 9 pm 77.9% 77
Departing 9 pm to 10 pm 53.8% 104
Departing 10 pm to 11 pm Insufficient sample 44
Woman at an airport window watching a plane take off
Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source
U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period
September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through
August 2026
Processed
2026-11-03
Scope
Nonstop scheduled flights from Philadelphia, PA (PHL) to Miami, FL (MIA), one direction. Airlines that report to the DOT only.
Method
Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

Independent reference site. No government or airline affiliation or endorsement.