How reliable is Helena Regional Airport?
Flights from HLN departed within 15 minutes of schedule in 89% of 11,113 flights in official BTS history — and weather is calmest in Jun. 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 HLN looks like
On-time departures
across 11,113 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 Helena
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 · 98/100 favorability
Roughest month
Most disruptive — low visibility & fog, snow · 84/100 favorability
The read on HLN
What the numbers say about flying through Helena Regional Airport
Across official performance history, flights from Helena left within 15 minutes of schedule about 89% of the time over 11,113 flights. That's one of the more dependable operational records you'll see. Pair it with a low cancellation rate of 0.8%, so flights here rarely vanish outright. When a departure does run late, the typical delay is around 7 minutes.
On weather, Helena is an unusually calm-weather airport year-round. June is the calmest stretch for flying, scoring 98 out of 100 for favorable conditions, while January is the most disruptive at 84, 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 Helena, 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 HLN
- How reliable is Helena Regional Airport (HLN)?
- Flights from Helena left within 15 minutes of schedule roughly 89% of the time across 11,113 flights of official history — one of the more dependable operational records you'll see. The cancellation rate runs about 0.8%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from HLN for good weather?
- June has the calmest flying weather at Helena Regional Airport. January is the most disruptive, mainly from low visibility & fog and snow.
Planning a trip through Helena?
Score real flights to and from HLN on reliability, weather, and connection safety — not just price.