PHL to SJU flight delays & on-time performance
Nonstop flights from Philadelphia International Airport to Luis Munoz Marin International Airport · 1,576 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHL or SJU right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Philadelphia (PHL) to San Juan (SJU) arrived on time 63% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.3% were cancelled, and 15% arrived an hour or more late.
- JetBlue was the most punctual airline here (72% on time); Frontier Airlines was the least (57%).
- Departures scheduled around 9am did best (78% on time); around 8pm did worst (51%).
- Wednesday was the most reliable day to fly (69% on time) and Saturday the least (58%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
Which airline is most on time from PHL to SJU?
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 |
|---|---|---|---|---|---|
| JetBlue | 72% | 2.3% | 30 min | 6.5% | 128 |
| American Airlines | 70% | 1.9% | 27 min | 12.2% | 732 |
| Spirit Airlines | 62% | 8.6% | 26 min | 15.4% | 185 |
| Frontier Airlines | 57% | 3.4% | 33 min | 17.7% | 887 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am62%96 flights
- 7am71%81 flights
- 8am75%216 flights
- 9am78%126 flights
- 10am63%42 flights
- 11am67%253 flights
- 12pm72%136 flights
- 1pm54%28 flights
- 2pm49%44 flights
- 4pm44%44 flights
- 6pm63%259 flights
- 7pm52%86 flights
- 8pm51%399 flights
- 10pm50%28 flights
- 11pm83%53 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday60%5.6% cancelled
- Tuesday69%3.0% cancelled
- Wednesday69%0.0% cancelled
- Thursday63%1.0% cancelled
- Friday65%2.3% cancelled
- Saturday58%3.9% cancelled
- Sunday59%6.4% 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)37%
- Late-arriving aircraft34%
- Air traffic control & airport congestion23%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather63%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion10%
- Security0%
PHL to SJU: common questions
- How often are PHL to SJU flights on time?
- 63% 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 Philadelphia to San Juan cancelled?
- 3.3% of scheduled flights were cancelled (63 of 1,932).
- How long are typical delays?
- Across all flights the average arrival delay was 30 min (early arrivals count as zero). Flights that were late arrived 78 min behind schedule on average, and 14.6% of flights were an hour or more late.
- How long is taxi time at PHL?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SJU to PHL — 71% on time
More flights from Philadelphia
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHL → SJU, nonstop flights by US airlines that report to the DOT. How we calculate this.