ON TIMEBOARD

PHL → MHT on time

Philadelphia (Philadelphia, PA) to Manchester-Boston (Manchester, NH). Every scheduled flight, September 2025 to August 2026.

On time
81%
arrived < 15 min late
Cancelled
3.1%
1,231 flights
Typical arrival
−14 min
median vs schedule
When late
+79 min
average delay
Flights / day
3
1 airline

81% of flights from Philadelphia to Manchester arrived on time over the past 12 months. That is about the typical U.S. route. The 8 a.m. departures ran on time 87% of the time; the 10 p.m. ones 73%. 10% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for PHL → MHT: when a flight was late, it was under 45 minutes late 48% of the time. About 1 in 15 flights landed an hour or more late, and 1 in 62 three hours or more; 3.1% were cancelled outright.

Share of all 1,231 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
American Airlines1,23181%3.1%−14 min6.5%+79 minPiedmont Airlines 98%, PSA Airlines 2%

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at PHL). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%8 a.m. departures: 87% on time (171 flights)878a9 a.m. departures: 85% on time (166 flights)859a10 a.m. departures: too few flights (17 flights)10a11 a.m. departures: too few flights11anoon departures: 83% on time (103 flights)8312p1 p.m. departures: too few flights (28 flights)1p2 p.m. departures: 81% on time (169 flights)812p3 p.m. departures: too few flights (60 flights)3p4 p.m. departures: too few flights (27 flights)4p5 p.m. departures: too few flights (93 flights)5p6 p.m. departures: too few flights6p7 p.m. departures: too few flights (41 flights)7p8 p.m. departures: too few flights (23 flights)8p9 p.m. departures: 86% on time (208 flights)869p10 p.m. departures: 73% on time (125 flights)7310p
PHL → MHT, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On PHL → MHT, each airline's last flight of the day was cancelled 4.1% of the time, against 2.7% for its earlier flights (1.5× as often). It arrived 3+ hours late 1.1% of the time (earlier flights: 1.8%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
American Airlines10:00 p.m.4.1%1.1%2.7%first flight 8:30 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

If you need to be in MHT tonight, book an earlier flight so there's a backup if it's cancelled.

By month

Each calendar month pooled over 2023–2026. Best: November (91%). Worst: July (72%).

40%70%100%Jan: 78% on time (253 flights)78JanFeb: 89% on time (243 flights)89FebMar: 87% on time (252 flights)87MarApr: 89% on time (263 flights)89AprMay: 84% on time (274 flights)84MayJun: 79% on time (317 flights)79JunJul: 72% on time (328 flights)72JulAug: 72% on time (378 flights)72AugSep: 88% on time (299 flights)88SepOct: 89% on time (313 flights)89OctNov: 91% on time (264 flights)91NovDec: 87% on time (261 flights)87Dec

By day of week

DayFlightsOn timeCancelled
Monday18779%3.7%
Tuesday16982%2.4%
Wednesday17486%2.3%
Thursday18073%5.6%
Friday18179%1.7%
Saturday15984%1.3%
Sunday18181%4.4%

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 64%Airline (crew, maintenance, ops) 17%Air traffic & airport (NAS) 12%Severe weather 7%

Cancellations: weather 33 · air traffic/airport 4 · airline 1

Month by month

50%75%100%Sep 2023Jan 2024Jan 2025Jan 2026Aug 2024: 71% on time, 5.2% cancelledSep 2024: 89% on time, 0.0% cancelledOct 2024: 88% on time, 0.0% cancelledJun 2025: 68% on time, 3.6% cancelledJul 2025: 63% on time, 2.5% cancelledAug 2025: 84% on time, 0.0% cancelledSep 2025: 86% on time, 1.0% cancelledOct 2025: 87% on time, 0.0% cancelledMay 2026: 86% on time, 1.0% cancelledJun 2026: 82% on time, 2.5% cancelledJul 2026: 68% on time, 5.8% cancelledAug 2026: 63% on time, 10.6% cancelled
Share of flights on time, by month (hover a point for cancellations)
PHL → MHT, monthly on-time and cancellation rate.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
AA 58102:12 p.m.23677%3.4%−12 minPiedmont Airlines
AA 596610:00 p.m.13182%3.0%−15 minPiedmont Airlines

Worst days in the past year

DateFlightsOn timeCancelled
Aug 8, 202640%0
Jul 21, 202640%3
Jan 25, 202630%3
Feb 23, 202630%3
Jan 18, 202630%0

Nearby airport alternatives

Other ways to make the same trip, using airports within 60 miles of Philadelphia or Manchester. None has been clearly more reliable than PHL → MHT.

RouteFlightsOn timeCancelled
PHL → MHT (this route)1,23181%3.1%
PHL → BOS Philadelphia to Boston Logan5,03572%3.4%

Questions

How often are flights from PHL to MHT on time?

81% of 1,231 scheduled flights from Philadelphia, PA to Manchester, NH arrived within 15 minutes of schedule between September 2025 and August 2026. 3.1% were cancelled.

What is the best time of day to fly PHL to MHT?

Flights scheduled to leave at 8 a.m. were the most reliable (87% on time). The 10 p.m. departures were the least (73%).

What month has the most delays from PHL to MHT?

July (72% on time). The best month is November (91%), over 2023–2026.

Is the last flight of the day from PHL to MHT more likely to be cancelled?

Yes. Each airline's last PHL–MHT flight of the day was cancelled 4.1% of the time over the past year, against 2.7% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.