How reliable is San Salvador International Airport?
Month-by-month weather risk and connection guidance for San Salvador International Airport. We don’t yet have on-time performance history here — see why below.
Weather favorability
year-round climate
On-time performance data isn’t available for ZSA yet
Our historical on-time and cancellation record currently covers the US, UK, Brazil, and Australia, so we don’t score departure reliability at San Salvador International Airport yet. Weather climatology below comes from global airport observations and still applies.
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Weather by month
When the weather works for you at San Salvador
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 99/100 favorability
Roughest month
Most disruptive — low visibility & fog, thunderstorms · 96/100 favorability
The read on ZSA
What the numbers say about flying through San Salvador International Airport
PlaneSane doesn't yet have on-time and cancellation history for San Salvador International Airport, so it isn't scored for departure reliability here — that record currently covers the US, UK, Brazil, and Australia. The weather and connection context below comes from separate global sources and still applies.
On weather, San Salvador is an unusually calm-weather airport year-round. April is the calmest stretch for flying, scoring 99 out of 100 for favorable conditions, while September is the most disruptive at 96, driven mainly by low visibility & fog and thunderstorms. The year is relatively steady, so no single month stands out as one to avoid on weather alone.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to San Salvador, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about ZSA
- What is the best month to fly from ZSA for good weather?
- April has the calmest flying weather at San Salvador International Airport. September is the most disruptive, mainly from low visibility & fog and thunderstorms.
Planning a trip through San Salvador?
Score real flights to and from ZSA on reliability, weather, and connection safety — not just price.