PSM to SFB flight delays & on-time performance
Nonstop flights from Portsmouth International Airport at Pease to Orlando Sanford International Airport · 1,144 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PSM or SFB right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Portsmouth (PSM) to Sanford (SFB) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.7% were cancelled, and 12% arrived an hour or more late.
- Allegiant Air is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9am did best (87% on time); around 7pm did worst (50%).
- Thursday was the most reliable day to fly (78% on time) and Saturday the least (53%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (49%).
Which airline is most on time from PSM to SFB?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Allegiant Air | 70% | 0.7% | 35 min | 11.9% | 136 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am87%23 flights
- 10am79%28 flights
- 12pm58%12 flights
- 6pm71%18 flights
- 7pm50%36 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday33%0.0% cancelled
- Tuesday71%0.0% cancelled
- Wednesday100%0.0% cancelled
- Thursday78%0.0% cancelled
- Friday100%0.0% cancelled
- Saturday53%0.0% cancelled
- Sunday68%2.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)49%
- Late-arriving aircraft35%
- Air traffic control & airport congestion11%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
PSM to SFB: common questions
- How often are PSM to SFB flights on time?
- 70% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Portsmouth to Sanford cancelled?
- 0.7% of scheduled flights were cancelled (1 of 136).
- How long are typical delays?
- Across all flights the average arrival delay was 35 min (early arrivals count as zero). Flights that were late arrived 112 min behind schedule on average, and 11.9% of flights were an hour or more late.
- How long is taxi time at PSM?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PSM → SFB, nonstop flights by US airlines that report to the DOT. How we calculate this.