Best Time to Fly MDW to SFO
Chicago to San Francisco — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
April
0% on time
MDW → SFO on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 28 |
| February | 1% | 0% | 38 |
| March | 1% | 0% | 85 |
| April | 0% | 0% | 111 |
| May | 0% | 0% | 128 |
| June | 0% | 0% | 183 |
| July | 1% | 0% | 197 |
| August | 1% | 0% | 118 |
| September | 1% | 0% | 107 |
| October | 1% | 0% | 106 |
| November | 1% | 0% | 90 |
| December | 1% | 0% | 93 |
Frequently asked
What is the best month to fly from MDW to SFO?
January has the highest on-time rate at 1% for flights from Chicago to San Francisco.
What is the worst month to fly MDW to SFO?
April has the lowest on-time rate at 0%, often due to seasonal weather patterns.
How often are MDW to SFO flights delayed?
On average, 1% of flights from MDW to SFO arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.