Hartford (BDL) to San Juan (SJU): On-Time Performance
Data through July 2026
When you fly BDL to SJU matters as much as anything else about the booking: the route swung from 81% on-time in April 2025 to just 39% in July 2026. Across the full period the route averages 63% on-time against a national 78%. Morning departures also hold up better than evening ones (70% vs 56%), which matters most in the rough months.
- On-time
- 63%
- arrived <15 min late
- Avg delay
- 36 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 2.6
- last 12 months
- Duration
- 3h 54m
- scheduled
- Distance
- 1,666 mi
Best airline from BDL to SJU
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| JetBlue Airwaysmost reliable | 65% | 29 min | 1.3% | 1,484 |
| Frontier Airlines | 58% | 53 min | 1.6% | 552 |
Monthly on-time trend
Best time to fly from BDL to SJU
Aim for departures around 7 a.m. (82% on-time); avoid 10 p.m. departures (45%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 62% | 45 min |
| Tuesday | 62% | 35 min |
| Wednesday | 65% | 28 min |
| Thursday | 61% | 35 min |
| Fridaybest | 68% | 29 min |
| Saturday | 63% | 41 min |
| Sunday | 63% | 36 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations40%
- National airspace system16%
- Weather1%
Frequently asked questions
- How often are flights from BDL to SJU delayed?
- 37% of BDL–SJU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 36 minutes.
- Which airline is most reliable from BDL to SJU?
- JetBlue Airways has the best on-time record on this route at 65%, based on 1,484 flights. 2 airlines flew BDL–SJU frequently enough to compare in this period.
- What is the best time of day to fly from BDL to SJU?
- Departures around 7 a.m. have the best record (82% on-time), while departures around 10 p.m. have the worst (45%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BDL to SJU?
- The scheduled BDL–SJU flight time averages 3h 54m over 1,666 miles. Actual arrival times vary — flights on this route land 15+ minutes late 37% of the time.
- How often are BDL to SJU flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BDL to SJU?
- July 2026 was the roughest month in this dataset, with only 39% of arrivals on time. The best was April 2025 at 81%. If your dates are flexible, that 42-point gap is worth planning around.
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Based on 2,036 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.