Portsmouth (PSM) to Sanford (SFB): On-Time Performance
Data through July 2026
Portsmouth (PSM) to Sanford (SFB) is a thinner route than most in this dataset — 136 departures over the past year, roughly 3 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 70% arrived on time, noticeably below the national average of 78%.
- On-time
- 70%
- arrived <15 min late
- Avg delay
- 32 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 0.37
- last 12 months
- Duration
- 3h 11m
- scheduled
- Distance
- 1,144 mi
Monthly on-time trend
Best time to fly from PSM to SFB
Aim for departures around 10 a.m. (73% on-time); avoid 7 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 151 min |
| Tuesday | 77% | 22 min |
| Wednesday | 80% | 13 min |
| Thursday | 78% | 19 min |
| Fridaybest | 100% | 1 min |
| Saturday | 55% | 28 min |
| Sunday | 65% | 44 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations34%
- National airspace system12%
- Weather15%
Frequently asked questions
- How often are flights from PSM to SFB delayed?
- 30% of PSM–SFB flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 32 minutes.
- What is the best time of day to fly from PSM to SFB?
- Departures around 10 a.m. have the best record (73% on-time), while departures around 7 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PSM to SFB?
- The scheduled PSM–SFB flight time averages 3h 11m over 1,144 miles. Actual arrival times vary — flights on this route land 15+ minutes late 30% of the time.
- How often are PSM to SFB flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
Explore related pages
More routes from PSM
Other ways to fly to Sanford (SFB)
Related guides
Based on 297 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.