MIA to SAT flight delays & on-time performance
Nonstop flights from Miami International Airport to San Antonio International Airport · 1,143 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MIA or SAT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Miami (MIA) to San Antonio (SAT) arrived on time 69% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.8% were cancelled, and 10% arrived an hour or more late.
- Envoy Air was the most punctual airline here (86% on time); American Airlines was the least (66%).
- Departures scheduled around 3pm did best (83% on time); around 8pm did worst (52%).
- Wednesday was the most reliable day to fly (79% on time) and Saturday the least (58%).
- The largest source of delay minutes was late-arriving aircraft (40%).
Which airline is most on time from MIA 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 |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 86% | 0.0% | 5 min | 0.0% | 84 |
| American Airlines | 66% | 1.0% | 26 min | 12.0% | 399 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 2pm70%37 flights
- 3pm83%75 flights
- 7pm78%27 flights
- 8pm52%44 flights
- 9pm68%289 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%1.4% cancelled
- Tuesday77%1.5% cancelled
- Wednesday79%0.0% cancelled
- Thursday75%1.4% cancelled
- Friday65%0.0% cancelled
- Saturday58%0.0% cancelled
- Sunday61%1.4% 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 aircraft40%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion13%
- Extreme weather9%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
MIA to SAT: common questions
- How often are MIA to SAT flights on time?
- 69% 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 Miami to San Antonio cancelled?
- 0.8% of scheduled flights were cancelled (4 of 483).
- How long are typical delays?
- Across all flights the average arrival delay was 22 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 9.9% of flights were an hour or more late.
- How long is taxi time at MIA?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to MIA — 89% on time
More flights from Miami
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MIA → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.