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Airport · IPT · Williamsport, Pennsylvania

Williamsport, PA

According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Williamsport, PA (IPT) ranks #382 of 382 tracked US airports by total flights (most flights = #1). Williamsport, PA posts top-5% on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.

Data updated 2026-06-13

90.1%
On-time
Top 3%
on-time, US airports
193 min
Delay when late
0.00%
Cancelled
#382 of 382
Corpus placement
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IPT on-time rate vs. the national average

Ahead of the U.S. average across all 382 tracked airports.

0%100%U.S. average79%90.1%

Delay Cause Breakdown

Top delay cause: Carrier. Total delay minutes: 585.

Late Aircraft 0.0% (0 min)
Carrier 96.1% (562 min)
NAS (National Aviation System) 3.9% (23 min)
Weather 0.0% (0 min)
Security 0.0% (0 min)

Cancellation & Diversion Analysis

Flight disruption statistics for Williamsport, PA.

Cancellation Rate

0.00%

0 of 142 flights

Diversion Rate

0.00%

0 of 142 flights

Delay Rate

9.9%

14 of 142 flights

Nationwide peers by on-time rate & flight volume

Two PlainFlights-derived comparison paths for Williamsport, PA, both outside Pennsylvania so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.

Similar on-time rate

Nearest out-of-state BTS on-time rate (this airport: 90.1%).

Columbus, MS

Columbus, MS

89.9% on-time 9,419 flights

Gustavus, AK

Gustavus, AK

90.3% on-time 1,064 flights

Lewiston, ID

Lewiston, ID

89.7% on-time 10,808 flights

Cape Girardeau, MO

Cape Girardeau, MO

89.7% on-time 3,473 flights

Other Airports in Pennsylvania

Compare performance with other Pennsylvania airports.

PHL 81.3%

Philadelphia, PA

Philadelphia · 1,060,086 flights
PIT 83.3%

Pittsburgh, PA

Pittsburgh · 462,554 flights
MDT 82.8%

Harrisburg, PA

Harrisburg · 60,271 flights
ABE 83.7%

Allentown/Bethlehem/Easton, PA

Allentown/Bethlehem/Easton · 48,496 flights
AVP 82.7%

Scranton/Wilkes-Barre, PA

Scranton/Wilkes-Barre · 21,551 flights
SCE 83.8%

State College, PA

State College · 9,139 flights
LBE 83.5%

Latrobe, PA

Latrobe · 8,539 flights
JST 82.1%

Johnstown, PA

Johnstown · 7,267 flights

IPT delay-share reading

The standout signal at Williamsport, PA is the delay mix: Carrier owns 96.1% of 585 delay minutes across 142 BTS flights. The on-time headline is 90.1% (11.1 pts above the 79% national average), with 14 delayed and 0 cancelled (0.00%).

Delay minutes concentrate in Carrier (0.0% late-aircraft, 96.1% carrier, 3.9% NAS, 0.0% weather, 0.0% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.

On the multi-year calendar, IPT is strongest in August (96.4% on-time) and weakest in October (81.8%), a 14.6-point swing. Volume peaks in September (~76 flights/month). Field definitions: on-time performance explained.

Statewide aggregates for Pennsylvania: Pennsylvania flight data.

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2020). Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.

Read our methodology - how this data is sourced, computed, and verified.

Using IPT's data

IPT's on-time book is stronger than most peers; the remaining risk sits in the delay mix, not a weak headline rate.

  • Compare IPT against airports with a similar on-time rate. Compare airports
  • Travel in August rather than October if your dates are flexible. Seasonal patterns
  • Gate-to-wheels taxi-out averages 11.6 min here; check the monthly series before a tight connection. Taxi times

On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.