SJU to JFK flight delays & on-time performance
Nonstop flights from Luis Munoz Marin International Airport to John F. Kennedy International Airport · 1,598 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJU or JFK right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Juan (SJU) to New York (JFK) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 3.2% were cancelled, and 9% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (88% on time); JetBlue was the least (73%).
- Departures scheduled around 7am did best (92% on time); around 3pm did worst (67%).
- Friday was the most reliable day to fly (83% on time) and Sunday the least (75%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from SJU to JFK?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 88% | 2.2% | 10 min | 3.8% | 1,104 |
| Frontier Airlines | 79% | 2.0% | 14 min | 8.1% | 255 |
| JetBlue | 73% | 3.8% | 23 min | 11.3% | 2,237 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 3am85%98 flights
- 5am78%136 flights
- 6am84%295 flights
- 7am92%482 flights
- 8am82%155 flights
- 9am89%96 flights
- 10am70%120 flights
- 11am71%96 flights
- 12pm80%75 flights
- 1pm76%430 flights
- 2pm79%318 flights
- 3pm67%128 flights
- 5pm80%221 flights
- 6pm77%430 flights
- 7pm72%164 flights
- 8pm50%94 flights
- 9pm69%131 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%4.4% cancelled
- Tuesday79%3.4% cancelled
- Wednesday80%0.6% cancelled
- Thursday79%0.4% cancelled
- Friday83%2.3% cancelled
- Saturday77%5.1% cancelled
- Sunday75%5.9% 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 aircraft46%
- Airline (crew, maintenance, cleaning, fueling)39%
- Air traffic control & airport congestion13%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Air traffic control & airport congestion29%
- Airline (crew, maintenance, cleaning, fueling)17%
- Security4%
SJU to JFK: common questions
- How often are SJU to JFK flights on time?
- 78% 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 San Juan to New York cancelled?
- 3.2% of scheduled flights were cancelled (114 of 3,596).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 80 min behind schedule on average, and 8.7% of flights were an hour or more late.
- How long is taxi time at SJU?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: JFK to SJU — 70% on time
More flights from San Juan
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJU → JFK, nonstop flights by US airlines that report to the DOT. How we calculate this.