Portsmouth International Airport at Pease (PSM): Delays & On-Time Performance
Data through May 2026
Portsmouth International Airport at Pease (PSM) in Portsmouth, NH is a middle-of-the-pack performer: 79% of departures are on time, within a few points of the national 78%. It hosts 1 airlines flying 1 departures a day to 4 destinations, with cancellations at 1%.
- Departures on-time
- 79%
- left <15 min late
- Avg dep delay
- 21 min
- Arrivals on-time
- 84%
- Cancelled
- 1.0%
- Destinations
- 4
- nonstop
- Airlines
- 1
Monthly on-time trend
Best time of day to depart from PSM
Busiest routes from PSM
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| PSM → PGD | 236 | 80% | 22 min |
| PSM → SFB | 146 | 71% | 28 min |
Alternative airports near Portsmouth
Other airports within 120 miles, compared on departure reliability.
| Airport | Distance | On-time departures | Avg delay |
|---|---|---|---|
| MHT — Manchester-Boston Regional Airport | 33 mi | 82% | 16 min |
| PWM — Portland International Jetport | 47 mi | 82% | 17 min |
| BOS — Boston Logan International Airport | 50 mi | 78% | 17 min |
| ORH — Worcester Regional Airport | 77 mi | 79% | 23 min |
| PVD — Rhode Island T. F. Green International Airport | 98 mi | 82% | 16 min |
Frequently asked questions
- How often are flights delayed at PSM?
- 21% of departures from Portsmouth International Airport at Pease left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 21 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from PSM?
- Flights scheduled around 11 a.m. depart on time 89% of the time at PSM, versus 72% around 7 p.m.. Booking before noon is the usual rule of thumb here.
- How often are flights cancelled at PSM?
- 1% of scheduled departures from PSM were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Based on 907 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.