How reliable is Mount Isa Airport?
Flights from ISA avoided significant airline-controlled delay in 78% of 4,793 flights in official BITRE history — and weather is calmest in May. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the airline-controlled delay record at ISA looks like
Avoided 15+ min controlled delay
across 4,793 flights
Source: BITRE. Origin-grouped, cause-attributed operational history; it is not a direct departure-punctuality measure or a guarantee for any flight.
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Weather by month
When the weather works for you at Mount Isa
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 · 100/100 favorability
Roughest month
Most disruptive — thunderstorms, low visibility & fog · 98/100 favorability
The read on ISA
What the numbers say about flying through Mount Isa Airport
Across official performance history, flights from Mount Isa avoided significant airline-controlled delay about 78% of the time over 4,793 flights. That's a respectable but unspectacular operational record. Pair it with a moderate cancellation rate of 1.6%. When a departure does run late, the typical delay is around 0 minutes.
On weather, Mount Isa is an unusually calm-weather airport year-round. May is the calmest stretch for flying, scoring 100 out of 100 for favorable conditions, while February is the most disruptive at 98, 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 Mount Isa, 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 ISA
- How reliable is Mount Isa Airport (ISA)?
- Flights from Mount Isa avoided significant airline-controlled delay roughly 78% of the time across 4,793 flights of official history — a respectable but unspectacular operational record. The cancellation rate runs about 1.6%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from ISA for good weather?
- May has the calmest flying weather at Mount Isa Airport. February is the most disruptive, mainly from thunderstorms and low visibility & fog.
Planning a trip through Mount Isa?
Score real flights to and from ISA on reliability, weather, and connection safety — not just price.