Best Time to Fly DTW to SJU
Detroit to San Juan — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
DTW → SJU on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 109 |
| February | 1% | 0% | 93 |
| March | 1% | 0% | 103 |
| April | 1% | 0% | 86 |
| May | 1% | 0% | 158 |
| June | 1% | 0% | 178 |
| July | 1% | 0% | 184 |
| August | 1% | 0% | 131 |
| September | 1% | 0% | 56 |
| October | 1% | 0% | 44 |
| November | 1% | 0% | 76 |
| December | 1% | 0% | 118 |
Frequently asked
What is the best month to fly from DTW to SJU?
January has the highest on-time rate at 1% for flights from Detroit to San Juan.
What is the worst month to fly DTW to SJU?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are DTW to SJU flights delayed?
On average, 1% of flights from DTW to SJU arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.