How reliable is Lehigh Valley International Airport?
Flights from ABE departed within 15 minutes of schedule in 84% of 30,331 flights in official BTS history — and weather is calmest in Aug. 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 ABE looks like
On-time departures
across 30,331 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 Allentown
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 · 94/100 favorability
Roughest month
Most disruptive — low visibility & fog, snow · 81/100 favorability
The read on ABE
What the numbers say about flying through Lehigh Valley International Airport
Across official performance history, flights from Allentown left within 15 minutes of schedule about 84% of the time over 30,331 flights. That's a solid, better-than-average operational record. Pair it with a moderate cancellation rate of 2.0%. When a departure does run late, the typical delay is around 12 minutes.
On weather, Allentown is an unusually calm-weather airport year-round. August is the calmest stretch for flying, scoring 94 out of 100 for favorable conditions, while February is the most disruptive at 81, driven mainly by low visibility & fog and snow. 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 Allentown, 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 ABE
- How reliable is Lehigh Valley International Airport (ABE)?
- Flights from Allentown left within 15 minutes of schedule roughly 84% of the time across 30,331 flights of official history — a solid, better-than-average operational record. The cancellation rate runs about 2.0%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from ABE for good weather?
- August has the calmest flying weather at Lehigh Valley International Airport. February is the most disruptive, mainly from low visibility & fog and snow.
Planning a trip through Allentown?
Score real flights to and from ABE on reliability, weather, and connection safety — not just price.