Portland, ME · Airport profile
PWM
Portland International Jetport
PWM right now
Live conditions where a permitted source publishes them, and the historical record where none does.
FlyerIntel does not currently have live operational data for this airport.
77.7% leave on time
14:00–14:59 local · 2,412 departures on record
When flights run late in this hour, most of the delay is attributed to the airline.
Historical pattern for PWM from US DOT BTS — not a live reading.
No current observation is available for this airport.
FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.
Airport reliability
Best time to fly from PWM
On-time arrival rate by scheduled local departure time.
Flights departing 5–9 AM arrived on time 88.9% of the time, against 70.6% for 3–6 PM departures — a gap of 18.2 percentage points.
By departure window
By departure hour
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Buckets with fewer than 120 flights are not scored.
What to expect at PWM
How busy the airport is through the day, from scheduled departure volume.
Scheduled departures by hour
The busiest hour is 6 AM, with about 4 departures a day, against roughly 0 at 9 PM. Counterintuitively, that peak is also more punctual than a typical hour here — early banks fly aircraft that have been on the ground overnight rather than ones inheriting the day’s delays.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Taxi-out is the time between leaving the gate and lifting off, averaged across departures and weighted by hour.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 5.3 percentage points.
By month
July is historically the weakest month and November the strongest, a spread of 16.0 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Airlines at PWM
Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.
| Carrier | Departures | On time | Cancelled | Median delay |
|---|---|---|---|---|
| Republic Airways YX | 9,200 | 84.3% | 2.99% | -11 min |
| American Airlines AA | 5,362 | 76.7% | 1.77% | -6 min |
| Southwest Airlines WN | 4,684 | 79.6% | 0.83% | -3 min |
| Delta Air Lines DL | 2,865 | 81.1% | 0.98% | -7 min |
| United Airlines UA | 2,752 | 80.1% | 1.74% | -6 min |
| PSA Airlines OH | 2,388 | 77.4% | 4.40% | -8 min |
| Endeavor Air 9E | 1,974 | 83.4% | 3.90% | -13 min |
| JetBlue B6 | 1,367 | 77.5% | 4.17% | -11 min |
| SkyWest Airlines OO | 1,192 | 76.1% | 1.43% | -3 min |
| Envoy Air MQ | 799 | 79.4% | 1.75% | -5 min |
| Frontier Airlines F9 | 645 | 74.7% | 4.81% | -13 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 500 departures are not listed.
Routes from PWM
Ranked by FlyerIntel Route Reliability Score.
Most reliable
Busiest routes
| Destination | Flights | On time | Score |
|---|---|---|---|
| PWM → BWI Baltimore | 3,917 | 80.9% | 74 |
| PWM → LGA New York | 3,861 | 83.2% | 57 |
| PWM → DCA Washington | 3,641 | 76.9% | 48 |
| PWM → ORD Chicago | 3,576 | 79.3% | 61 |
| PWM → EWR Newark | 3,133 | 84.2% | 58 |
| PWM → PHL Philadelphia | 2,476 | 77.9% | 53 |
| PWM → JFK New York | 2,234 | 79.4% | 47 |
| PWM → CLT Charlotte | 2,100 | 79.2% | 61 |
| PWM → IAD Washington | 2,012 | 87.2% | 75 |
| PWM → DTW Detroit | 1,818 | 81.2% | 67 |
| PWM → ATL Atlanta | 1,723 | 80.4% | 69 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Only routes with at least 750 flights are ranked.
Reliability over time
On-time arrival rate for departures, by month.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and sources
Historical statistics
Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – June 2026, comprising 33,228 departures from PWM. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Live conditions
Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.