How weather affects
every major US airport.
Airport-specific delay and cancellation data for every type of weather disruption. Select a weather type to see which airports get hit and how bad it gets.
Winter Snow
How snowstorms disrupt flights, de-icing delays, and runway closures
Season: Nov - Mar
Thunderstorms
Ground stops, lightning holds, and summer convective weather
Season: May - Sep
Fog
Low visibility, IFR conditions, and arrival rate reductions
Season: Year-round (worst Jun - Sep at SFO)
Hurricanes
Airport closures, mass cancellations, and multi-day recovery
Season: Jun - Nov
High Wind
Crosswind limits, turbulence, and runway configuration changes
Season: Year-round (worst Nov - Mar)
About this data
Weather impact analysis is based on historical DOT on-time performance data cross-referenced with NOAA weather observations at each airport. Delay rates, cancellation rates, and airline performance are calculated from monthly aggregates covering multiple years.