Route on-time record
SAT to MIA: most on-time flights and the best time to fly
San Antonio (San Antonio International Airport) to Miami (Miami International Airport). 483 nonstop flights in Jun 2025 to May 2026, 88% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was American 1604 at 5:25 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SAT → MIA
San Antonio to Miami: 483 nonstop flights a year
On time (12 months)
88%
Cancelled
1.4%
avg delay 11 min
Best time to leave
Before 9 AM
94% on time vs 67% 3 to 6 PM
Most reliable airline
American
89% chance on time
Lowest nonstop fare seen in the next two months: $371 (American 1604 on 2026-10-29). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · American 1604
5:25 AM → 9:14 AM2h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.6%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (356 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; 3 to 6 PM: 67%).
Strong track record · 356 flights
Find American 1604 fares Opens this date on Aviasales#2 · Envoy 3829 · sold as American Eagle
5:09 PM → 9:01 PM2h 52m nonstop
Local times, typical schedule. Last flown 2026-05-20.
76%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 75% of the time (12 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 67% on time; Before 9 AM: 94%).
- 56% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 12 flights
Find 5:09 PM flight fares Opens this date on Aviasales#3 · Envoy 4069 · sold as American Eagle
6:18 PM → 10:13 PM2h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 50%
- Cancelled
- 0.0%
- Avg arrival delay
- 40 min
- Arrived on time 50% of the time (10 flights, Jun 2025 to May 2026).
- 82% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 10 flights
Find 6:18 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines89%
399 flights · 91% on time as flown · 1.5% cancel
- Envoy Air (sold as American Eagle)82%
84 flights · 75% on time as flown · 1.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
365 flights · avg delay 6 min
- 3 to 6 PM67%
74 flights · avg delay 31 min
- 6 to 9 PM75%
44 flights · avg delay 18 min
Best day: Tuesday (91%). Worst: Saturday (79%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Severe weather34%
- Late-arriving aircraft30%
- Airline (crew, maintenance, boarding)22%
- Air traffic control and airport volume14%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
SAT to MIA questions
- What time of day is best to fly SAT to MIA?
- Before 9 AM: 94% of flights arrived on time, against 67% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from SAT to MIA?
- American, with a season-adjusted 89% chance of operating and arriving on time over 399 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on SAT to MIA?
- March (76% on time); the best was September (97%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from SAT
- MIA to SAT (return)
- SAT to DFW 77%
- SAT to ATL 85%
- SAT to DEN 81%
- SAT to DAL 84%
- SAT to PHX 83%
- SAT to IAH 81%
- SAT to LAS 83%
- SAT to ORD 76%
- SAT to LAX 87%
- SAT to HOU 74%
- SAT to CLT 86%
- SAT to MCO 77%
Most on-time flights from SAT on every route →
Live status: FAA delays and ground stops