SAT to SJU flight delays & on-time performance
Nonstop flights from San Antonio International Airport to Luis Munoz Marin International Airport · 2,181 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SAT or SJU right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Antonio (SAT) to San Juan (SJU) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 4% arrived an hour or more late.
- Spirit Airlines is the only airline reporting nonstop flights on this route.
- Monday was the most reliable day to fly (83% on time) and Friday the least (76%).
- The largest source of delay minutes was air traffic control & airport congestion (56%).
Which airline is most on time from SAT 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 |
|---|---|---|---|---|---|
| Spirit Airlines | 83% | 0.0% | 9 min | 3.8% | 53 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am87%15 flights
- 4pm77%13 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%0.0% cancelled
- Wednesday100%0.0% cancelled
- Friday76%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.
- Air traffic control & airport congestion56%
- Airline (crew, maintenance, cleaning, fueling)44%
- Late-arriving aircraft0%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SAT to SJU: common questions
- How often are SAT to SJU flights on time?
- 83% 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 Antonio to San Juan cancelled?
- 0.0% of scheduled flights were cancelled (0 of 53).
- How long are typical delays?
- Across all flights the average arrival delay was 9 min (early arrivals count as zero). Flights that were late arrived 44 min behind schedule on average, and 3.8% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SJU to SAT — 90% on time
More flights from San Antonio
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAT → SJU, nonstop flights by US airlines that report to the DOT. How we calculate this.