Airport reliability
Helena (HLN) on-time performance
How reliably flights leave Helena, MT (HLN) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.
Helena, MT1,518 departures in 12 months
- Departures on time
- 88.7% U.S. average 75.6%
- Cancelled
- 0.3% U.S. average 1.9%
- 60+ minutes late
- 4.5% U.S. average 8.1%
- Scheduled departures
- 1,518 12 months
What this means
HLN departures beat the U.S. average.
- 88.7% of the 1,518 scheduled departures from Helena (HLN) arrived at their destination on time, 13.1 points higher than the U.S. average of 75.6%.
- 0.3% of departures were cancelled (U.S. average 1.9%), and 4.5% arrived an hour or more late.
- Flights arriving at HLN were on time 87.1% of the time.
- Over the last 3 years, April was the most reliable month for departures from HLN (90.2% on time) and June the least reliable (78.2%).
- Cancellations peaked in January, when 2.3% of flights were cancelled.
- Flights scheduled to depart before 6 am were the most punctual (97.7% on time); flights scheduled to depart 2 pm to 3 pm were the least (78.2%).
Airlines at HLN
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Departures |
|---|---|---|---|---|---|
| SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska | 88.7% | 0.3% | 4.5% | 93 min | 1,518 |
Tap a heading to sort.
On-time rate by departure hour
Share of scheduled flights on time HLN average 88.7%
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 97.7% | 353 |
| Departing 6 am to 7 am | 89.7% | 369 |
| Departing 7 am to 8 am | Insufficient sample | 8 |
| Departing noon to 1 pm | 85.7% | 56 |
| Departing 1 pm to 2 pm | 93.8% | 304 |
| Departing 2 pm to 3 pm | 78.2% | 363 |
| Departing 5 pm to 6 pm | 70.9% | 55 |
| Departing 7 pm to 8 pm | Insufficient sample | 10 |
Best and worst months at HLN
Share of scheduled flights on time 12-month average 88.7%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 79.4% | 433 |
| February | 82.2% | 381 |
| March | 89.9% | 385 |
| April | 90.2% | 369 |
| May | 87.1% | 396 |
| June | 78.2% | 390 |
| July | 78.8% | 400 |
| August | 81.4% | 403 |
| September | 86.6% | 395 |
| October | 87.7% | 416 |
| November | 87.4% | 373 |
| December | 89.3% | 401 |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 84.0% | 150 |
| Oct 2025 | 87.2% | 149 |
| Nov 2025 | 85.8% | 127 |
| Dec 2025 | 86.1% | 122 |
| Jan 2026 | 95.1% | 123 |
| Feb 2026 | 92.0% | 112 |
| Mar 2026 | 91.9% | 124 |
| Apr 2026 | 93.3% | 120 |
| May 2026 | 96.8% | 124 |
| Jun 2026 | 82.5% | 120 |
| Jul 2026 | 86.2% | 123 |
| Aug 2026 | 84.7% | 124 |
Busiest routes from HLN
| To | On time | Cancelled | Airlines | Flights |
|---|---|---|---|---|
| Denver (DEN) | 83.0% | 0.4% | 1 | 783 |
| Salt Lake City (SLC) | 95.2% | 0.3% | 1 | 725 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic departures from Helena, MT (HLN) by airlines that report to the DOT.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.