PlainFlights

Airport · PWM · Portland, Maine

Portland, ME

According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Portland, ME (PWM) ranks #96 of 382 tracked US airports by total flights (most flights = #1). Portland, ME posts below-median on-time performance among the 382 tracked U.S. airports, as a high-volume U.S. airport.

Data updated 2026-06-13

82.2%
On-time
Top 65%
on-time, US airports
81 min
Delay when late
1.56%
Cancelled
#96 of 382
Corpus placement
View watchlist

Get PWM on-time updates (RSS)

Tools for PWM

Compare PWM to another hub, filter routes, or browse airline stats without leaving this profile.

Airport lookup

Compare airports

Route finder

Airline & season filters

PWM on-time rate vs. the national average

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

0%100%U.S. average79%82.2%

Delay Cause Breakdown

Top delay cause: Late Aircraft. Total delay minutes: 894,072.

Late Aircraft 36.0% (321,783 min)
Carrier 34.9% (311,769 min)
NAS (National Aviation System) 22.6% (202,323 min)
Weather 6.5% (57,742 min)
Security 0.1% (455 min)

PWM - seasonal on-time pattern

Best: November (94.2%) · worst: July (88.3%)

88%90%92%94%96% JanFebMarAprMayJunJulAugSepOctNovDec 91.5%

PWM - on-time rate by year

2020–2025, year-over-year trend.

88%90%92%94%96%98% 202020212022202320242025 96.3% 91.1% ▼ -5.4%

PWM - taxi-out and taxi-in (monthly)

Average taxi-out 16.6 min · taxi-in 5.8 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).

10 min15 min20 min25 min Jan 24Dec 25 19.2 min 20.4 min ▲ +6.2%

PWM's average taxi-out (16.6 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 14.1 min (October 2024) to 21.7 min (February 2025).

Cancellation & Diversion Analysis

Flight disruption statistics for Portland, ME.

Cancellation Rate

1.56%

1,886 of 120,951 flights

Diversion Rate

0.12%

144 of 120,951 flights

Delay Rate

17.8%

21,471 of 120,951 flights

Top Routes from PWM

Busiest routes to and from Portland, ME.

Filter routes

Route Flights On-Time Distance
PWM (Portland) → BWI (Baltimore) 7,230 82.7% 452 mi
BWI (Baltimore) → PWM (Portland) 7,227 75.9% 452 mi
PWM (Portland) → LGA (New York) 6,808 83.8% 269 mi
LGA (New York) → PWM (Portland) 6,805 83.1% 269 mi
PWM (Portland) → DCA (Washington) 6,201 80.2% 482 mi
DCA (Washington) → PWM (Portland) 6,198 78.5% 482 mi
PWM (Portland) → ORD (Chicago) 5,860 82.4% 900 mi
ORD (Chicago) → PWM (Portland) 5,757 80.8% 900 mi
EWR (Newark) → PWM (Portland) 5,419 81.2% 284 mi
PWM (Portland) → EWR (Newark) 5,418 83.2% 284 mi
JFK (New York) → PWM (Portland) 4,676 81.4% 273 mi
PWM (Portland) → JFK (New York) 4,676 82% 273 mi
PHL (Philadelphia) → PWM (Portland) 4,615 81.3% 364 mi
PWM (Portland) → PHL (Philadelphia) 4,607 83.2% 364 mi
CLT (Charlotte) → PWM (Portland) 4,177 80.6% 813 mi
PWM (Portland) → CLT (Charlotte) 4,175 83.2% 813 mi
PWM (Portland) → DTW (Detroit) 3,850 86.6% 668 mi
DTW (Detroit) → PWM (Portland) 3,848 84.7% 668 mi
IAD (Washington) → PWM (Portland) 2,863 85.5% 493 mi
PWM (Portland) → IAD (Washington) 2,820 86.4% 493 mi

Nationwide peers by on-time rate & flight volume

Two PlainFlights-derived comparison paths for Portland, ME, both outside Maine 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: 82.2%).

Wichita, KS

Wichita, KS

82.2% on-time 109,987 flights

Cedar Rapids/Iowa City, IA

Cedar Rapids/Iowa City, IA

82.2% on-time 91,140 flights

Amarillo, TX

Amarillo, TX

82.2% on-time 57,122 flights

Milwaukee, WI

Milwaukee, WI

82.3% on-time 299,952 flights

Similar flight volume

Nearest out-of-state total flights (this airport: 120,951).

White Plains, NY

White Plains, NY

117,692 flights 79.1% on-time

Bozeman, MT

Bozeman, MT

117,386 flights 82.3% on-time

Greensboro/High Point, NC

Greensboro/High Point, NC

116,389 flights 84.6% on-time

Rochester, NY

Rochester, NY

126,934 flights 82% on-time

Other Airports in Maine

Compare performance with other Maine airports.

BGR 83%

Bangor, ME

Bangor · 47,532 flights
PQI 82.6%

Presque Isle/Houlton, ME

Presque Isle/Houlton · 965 flights

PWM delay-share reading

The standout signal at Portland, ME is the delay mix: Late Aircraft owns 36.0% of 894,072 delay minutes across 120,951 BTS flights. The on-time headline is 82.2% (3.2 pts above the 79% national average), with 21,471 delayed and 1,886 cancelled (1.56%).

Delay minutes concentrate in Late Aircraft (36.0% late-aircraft, 34.9% carrier, 22.6% NAS, 6.5% weather, 0.1% security). As a busy airport, that mix matters more for connection planning than for a thin schedule.

On the multi-year calendar, PWM is strongest in November (94.2% on-time) and weakest in July (88.3%), a 5.9-point swing. Volume peaks in August (~2,385 flights/month). The busiest connecting route is to BWI (Baltimore) at 82.7% on-time. Field definitions: on-time performance explained.

Statewide aggregates for Maine: Maine flight data.

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025). 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 PWM's data

PWM's on-time book is mid-pack; month and delay-cause mix move more than the headline rate.

  • Check the busiest route from PWM before you book a connection. See top routes
  • Travel in November rather than July if your dates are flexible. Seasonal patterns
  • Gate-to-wheels taxi-out averages 16.6 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.