Flights Sanford → Portsmouth
SFB → PSM
Route overview
The flight route from Sanford to Portsmouth operates with a high level of punctuality, with 85% of flights arriving on time. Over the past year, there have been 40 total flights on this route, each experiencing an average delay of just 3.3 minutes. The destination airport sees approximately 233,806 passengers annually, indicating a moderate traffic volume.
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 Sanford (SFB) → Portsmouth (PSM) route is operated by Allegiant Air. Across 49 flights monitored in recent months, 86% arrived on time (within 15 min of schedule), with an average delay of 2 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 14.8/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Portsmouth the average ATFM delay is 15.5 minutes (main cause: airspace/NAS (BTS)). Departing from Sanford the average ATFM delay is 2.7 minutes.
Heading to Portsmouth: what to expect in this direction
Flying from Sanford (SFB) to Portsmouth (PSM) heads north-east for about 1,843 km, a flight time of roughly 2h 43m.
Departures from Sanford on this leg cluster in the overnight window: about 67% of SFB-PSM flights take off then.
Air-traffic congestion: departing Sanford the average ATFM delay is 2.7 min (airspace/NAS (BTS)); arriving into Portsmouth it is 15.5 min (airspace/NAS (BTS)).
Across 49 tracked SFB-PSM flights, 86% left on time with an average delay of 2 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 SFB-PSM
Airports
Frequently asked questions about SFB-PSM
On the Sanford (SFB) -> Portsmouth (PSM) route, on-time performance is 86% with an average delay of 2 minutes, based on 49 tracked flights.
The cancellation rate on Sanford-Portsmouth 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 Portsmouth, 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.
