Route Reliability
San Juan → Charlotte Amalie
SJU–STT · 68 miles · Luis Muñoz Marín International Airport to Cyril E. King Airport
- 72%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 0.5%
- Cancelled
- 365
- Flights in the data
Data through May 2026.
Airlines on this route
- JetBlue Airways73% on time · 351 flights
- Frontier Airlines43% on time · 14 flights
Too little history on this route to call a winner. We rank airlines only after 100 flights each.
What the data says
Morning flights do better here.
SJU–STT flights departing between 9 AM–12 PM arrived on time 82% of the time, versus 59% between 3–6 PM.
Mondays have been rough.
SJU–STT flights arrived on time 82% of the time on Wednesdays and just 63% on Mondays. That gap is worth planning around.
Trending in the right direction.
SJU–STT flights arrived on time 83% of the time over the last three months in the data, compared with 61% in the three months before that.
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
- Mon63%(59 flights)
- Tue78%(45 flights)
- Wed82%(44 flights)
- Thu69%(52 flights)
- Fri78%(60 flights)
- Sat67%(49 flights)
- Sun68%(53 flights)
- 9 AM–12 PM82%(55 flights)
- 12–3 PM71%(280 flights)
- 3–6 PM59%(27 flights)
Jun 77% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 30 |
| July 2025 | 69% | 39 |
| August 2025 | 64% | 36 |
| September 2025 | 55% | 22 |
| October 2025 | 83% | 24 |
| November 2025 | 81% | 31 |
| December 2025 | 68% | 31 |
| January 2026 | 60% | 30 |
| February 2026 | 56% | 27 |
| March 2026 | 74% | 31 |
| April 2026 | 80% | 30 |
| May 2026 | 94% | 31 |
Keep nerding
Based on 365 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.