SJU to EWR flight delays & on-time performance
Nonstop flights from Luis Munoz Marin International Airport to Newark Liberty International Airport · 1,608 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJU or EWR 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 Newark (EWR) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.1% were cancelled, and 10% arrived an hour or more late.
- United Airlines was the most punctual airline here (78% on time); Spirit Airlines was the least (64%).
- Departures scheduled around 5am did best (86% on time); around 5pm did worst (64%).
- Wednesday was the most reliable day to fly (78% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (54%).
Which airline is most on time from SJU to EWR?
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 |
|---|---|---|---|---|---|
| United Airlines | 78% | 2.6% | 23 min | 9.1% | 1,113 |
| JetBlue | 73% | 3.1% | 22 min | 10.2% | 654 |
| Frontier Airlines | 72% | 2.7% | 18 min | 6.2% | 184 |
| Spirit Airlines | 64% | 8.3% | 29 min | 17.4% | 133 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 1am84%241 flights
- 2am85%127 flights
- 5am86%73 flights
- 6am85%117 flights
- 7am82%86 flights
- 8am87%23 flights
- 11am82%45 flights
- 1pm66%259 flights
- 2pm65%148 flights
- 3pm60%54 flights
- 4pm70%210 flights
- 5pm64%168 flights
- 6pm82%263 flights
- 7pm70%197 flights
- 9pm62%40 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%4.8% cancelled
- Tuesday77%2.4% cancelled
- Wednesday78%1.4% cancelled
- Thursday77%1.4% cancelled
- Friday76%2.5% cancelled
- Saturday77%4.3% cancelled
- Sunday69%4.8% 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 aircraft54%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion13%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather46%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion20%
- Security0%
SJU to EWR: common questions
- How often are SJU to EWR flights on time?
- 75% 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 Newark cancelled?
- 3.1% of scheduled flights were cancelled (65 of 2,084).
- How long are typical delays?
- Across all flights the average arrival delay was 23 min (early arrivals count as zero). Flights that were late arrived 87 min behind schedule on average, and 9.7% of flights were an hour or more late.
- How long is taxi time at SJU?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: EWR to SJU — 71% 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 → EWR, nonstop flights by US airlines that report to the DOT. How we calculate this.