Route Reliability
San Juan → Miami
SJU–MIA · 1,045 miles · Luis Muñoz Marín International Airport to Miami International Airport
- 78%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 1.2%
- Cancelled
- 2,635
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.American Airlines79%2,049 flights
- 2.Spirit Airlines75%210 flights
- 3.Frontier Airlines74%376 flights
What the data says
Morning flights do better here.
SJU–MIA flights departing between 6–9 AM arrived on time 94% of the time, versus 63% between 3–6 PM.
Sunday scaries are real for this one.
SJU–MIA flights arrived on time 83% of the time on Wednesdays. On Sundays: 72%.
American Airlines has a slight edge here.
American Airlines arrived on time 79% of the time on this route; Frontier Airlines managed 74%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon76%(394 flights)
- Tue78%(329 flights)
- Wed83%(314 flights)
- Thu81%(379 flights)
- Fri81%(411 flights)
- Sat75%(360 flights)
- Sun72%(412 flights)
- 3–6 AM84%(74 flights)
- 6–9 AM94%(396 flights)
- 9 AM–12 PM85%(550 flights)
- 12–3 PM79%(602 flights)
- 3–6 PM63%(437 flights)
- 6–9 PM69%(472 flights)
- 9 PM–12 AM69%(68 flights)
Jun 83% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 200 |
| July 2025 | 72% | 215 |
| August 2025 | 74% | 208 |
| September 2025 | 77% | 168 |
| October 2025 | 76% | 175 |
| November 2025 | 81% | 210 |
| December 2025 | 84% | 256 |
| January 2026 | 74% | 233 |
| February 2026 | 82% | 205 |
| March 2026 | 78% | 275 |
| April 2026 | 75% | 238 |
| May 2026 | 81% | 216 |
Same trip, other airports
Keep nerding
Based on 2,635 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.