Flights Portsmouth → Sanford
PSM → SFB
Route overview
The flight route from Portsmouth to Sanford has a moderate on-time performance with 65% of flights arriving on schedule. The average delay for the route is approximately 16 minutes, based on a total of 40 flights recorded. The destination airport serves over two million passengers annually, indicating it is a significant travel hub.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Portsmouth (PSM) → Sanford (SFB) route is operated by Allegiant Air. Across 49 flights monitored in recent months, 69% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 20.5/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Sanford the average ATFM delay is 2.7 minutes (main cause: airspace/NAS (BTS)). Departing from Portsmouth the average ATFM delay is 15.5 minutes.
Heading to Sanford: what to expect in this direction
Flying from Portsmouth (PSM) to Sanford (SFB) heads south-west for about 1,843 km, a flight time of roughly 2h 43m.
Departures from Portsmouth on this leg cluster in the morning window: about 55% of PSM-SFB flights take off then.
Air-traffic congestion: departing Portsmouth the average ATFM delay is 15.5 min (airspace/NAS (BTS)); arriving into Sanford it is 2.7 min (airspace/NAS (BTS)).
Across 49 tracked PSM-SFB flights, 69% left on time with an average delay of 11 min and a 0.0% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Allegiant Air (G4) | 78% | 11 min | 2.3% |
Airlines operating PSM-SFB
Airports
Frequently asked questions about PSM-SFB
On the Portsmouth (PSM) -> Sanford (SFB) route, on-time performance is 69% with an average delay of 11 minutes, based on 49 tracked flights.
The cancellation rate on Portsmouth-Sanford is 0.00% across 49 monitored flights.
The route is operated by 1 airline: Allegiant Air.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Sanford, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
