America's Worst Airports for Flight Delays
Ian Shaw / Alamy
No. 2 San Francisco International Airport (SFO)
Flights Delayed: 21.78%
How much slack can you cut an airport just for fog? SFO has been in the bottom 10 since 2008, and keeps inching closer to the No. 1 worst spot. Perhaps due to that poor visibility, it has the earliest start time for the period in which delays rise above 20 percent: a depressing 10 a.m. Your best strategy here is to leave really early.
Best Time Window: Before 8 a.m.
Worst Time Window: 10 a.m.–10 p.m.