PSM to PIE flight delays & on-time performance
Nonstop flights from Portsmouth International Airport at Pease to St. Petersburg Clearwater International Airport · 1,239 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PSM or PIE 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 St. Petersburg (PIE) arrived on time 72% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 12% arrived an hour or more late.
- Allegiant Air is the only airline reporting nonstop flights on this route.
- Wednesday was the most reliable day to fly (81% on time) and Saturday the least (47%).
- The largest source of delay minutes was late-arriving aircraft (47%).
Which airline is most on time from PSM to PIE?
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 | 72% | 0.0% | 15 min | 11.6% | 43 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 11am100%12 flights
- 1pm87%15 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday100%0.0% cancelled
- Wednesday81%0.0% cancelled
- Friday100%0.0% cancelled
- Saturday47%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft47%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)12%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
PSM to PIE: common questions
- How often are PSM to PIE flights on time?
- 72% 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 St. Petersburg cancelled?
- 0.0% of scheduled flights were cancelled (0 of 43).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 49 min behind schedule on average, and 11.6% 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
More flights to St. Petersburg
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PSM → PIE, nonstop flights by US airlines that report to the DOT. How we calculate this.