Best Time to Fly MDW to SJU
Chicago 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
MDW → SJU on-time performance by month
23
24
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0.1% | 41 |
| February | 1% | 0% | 17 |
| May | 1% | 0% | 28 |
| June | 1% | 0% | 40 |
| July | 1% | 0% | 30 |
| August | 1% | 0% | 24 |
| September | 1% | 0.1% | 18 |
| October | 1% | 0.1% | 17 |
| November | 1% | 0% | 27 |
| December | 1% | 0% | 36 |
Frequently asked
What is the best month to fly from MDW to SJU?
January has the highest on-time rate at 1% for flights from Chicago to San Juan.
What is the worst month to fly MDW to SJU?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are MDW to SJU flights delayed?
On average, 1% of flights from MDW to SJU arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.