SAT to MIA flight delays
San Antonio, TX (SAT) Miami, FL (MIA) · 1,143 miles
509 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
87.4%
Arrived on time
Within 15 minutes of schedule
1.18%
Cancelled
Share of scheduled flights
89 min
When late, late by
Average across delayed arrivals
12 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. American Airlines arrived on time 11.8 points more often than Envoy Air over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The two directions do not behave alike. MIA to SAT arrives on time 17.8 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 89 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The season swings this route hard. In March it ran 23.5 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Which airline should you fly on this route?
Over January 2025 – August 2026, American Airlines arrived on time most often on SAT to MIA. Envoy Air was late most often. Flights ran closest to schedule in March and worst in July.
Every airline on SAT to MIA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| American Airlines | 399 | 90% | 1.5% | 108 min | A |
| Envoy Air | 110 | 78.18% | 0% | 58 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MIA to SAT Miami back to San Antonio 69.6% on time DOther routes from San Antonio
Common questions
Are flights from San Antonio to Miami usually delayed?
87.4% of flights on the SAT to MIA route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from San Antonio to Miami?
American Airlines, at 90% on time across 399 flights. The least punctual on the route was Envoy Air at 78.18%.
How often are SAT to MIA flights cancelled?
1.18% of scheduled flights did not operate — about 12 in every thousand. That is in the normal range.
What is the best month to fly San Antonio to Miami?
March, when 96.7% of flights arrived on time. The worst was July at 73.2%.
When SAT to MIA flights are late, how late are they?
About 89 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SAT to MIA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →