How reliable is Key West International Airport?
Flights from EYW departed within 15 minutes of schedule in 76% of 50,363 flights in official BTS history — and weather is calmest in Apr. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at EYW looks like
On-time departures
across 50,363 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
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Weather by month
When the weather works for you at Key West
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 — thunderstorms, low visibility & fog · 93/100 favorability
The read on EYW
What the numbers say about flying through Key West International Airport
Across official performance history, flights from Key West left within 15 minutes of schedule about 76% of the time over 50,363 flights. That's a respectable but unspectacular operational record. Pair it with a moderate cancellation rate of 2.3%. When a departure does run late, the typical delay is around 17 minutes.
On weather, Key West 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 93, driven mainly by thunderstorms and low visibility & fog. 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 Key West, 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 EYW
- How reliable is Key West International Airport (EYW)?
- Flights from Key West left within 15 minutes of schedule roughly 76% of the time across 50,363 flights of official history — a respectable but unspectacular operational record. The cancellation rate runs about 2.3%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from EYW for good weather?
- April has the calmest flying weather at Key West International Airport. September is the most disruptive, mainly from thunderstorms and low visibility & fog.
Planning a trip through Key West?
Score real flights to and from EYW on reliability, weather, and connection safety — not just price.