SJU to SAT flight delays & on-time performance
Nonstop flights from Luis Munoz Marin International Airport to San Antonio International Airport · 2,181 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJU or SAT 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 San Antonio (SAT) arrived on time 90% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.9% were cancelled, and 2% arrived an hour or more late.
- Spirit Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 10am did best (93% on time); around 6am did worst (86%).
- Friday was the most reliable day to fly (95% on time) and Monday the least (90%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (68%).
Which airline is most on time from SJU to SAT?
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 |
|---|---|---|---|---|---|
| Spirit Airlines | 90% | 1.9% | 5 min | 2.0% | 52 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am86%15 flights
- 10am93%15 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday90%0.0% cancelled
- Tuesday50%0.0% cancelled
- Wednesday80%0.0% cancelled
- Thursday100%0.0% cancelled
- Friday95%5.0% cancelled
- Sunday100%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.
- Airline (crew, maintenance, cleaning, fueling)68%
- Late-arriving aircraft17%
- Air traffic control & airport congestion15%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)100%
- Extreme weather0%
- Air traffic control & airport congestion0%
- Security0%
SJU to SAT: common questions
- How often are SJU to SAT flights on time?
- 90% 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 San Antonio cancelled?
- 1.9% of scheduled flights were cancelled (1 of 52).
- How long are typical delays?
- Across all flights the average arrival delay was 5 min (early arrivals count as zero). Flights that were late arrived 39 min behind schedule on average, and 2.0% of flights were an hour or more late.
- How long is taxi time at SJU?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to SJU — 83% 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 → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.