Route · HLN → DEN · 2020–2025 BTS data
Helena to Denver
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), HLN to DEN (Helena to Denver) ranks #3281 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.2%
- On-time
- +2.2 pts
- vs US avg
- 131 min
- Delay when late
- 3,034
- Flights
- #3281 of 4927
- Corpus placement
Cancelled
1.1%
Best Month
Oct 2024 92%
Worst Month
Jul 2025 54%
Distance
594 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 62 | 14 | 0 | 0 | OO |
| Nov 2025 | 59 | 8 | 1 | 0 | OO |
| Oct 2025 | 87 | 14 | 0 | 1 | OO |
| Sep 2025 | 90 | 22 | 0 | 1 | OO |
| Aug 2025 | 93 | 33 | 2 | 2 | OO |
| Jul 2025 | 91 | 42 | 2 | 3 | OO |
| Jun 2025 | 90 | 39 | 2 | 4 | OO |
| May 2025 | 72 | 20 | 1 | 1 | OO |
| Apr 2025 | 60 | 18 | 0 | 0 | OO |
| Mar 2025 | 62 | 8 | 0 | 1 | OO |
| Feb 2025 | 56 | 22 | 1 | 0 | OO |
| Jan 2025 | 62 | 21 | 2 | 0 | OO |
| Dec 2024 | 62 | 8 | 0 | 0 | OO |
| Nov 2024 | 59 | 12 | 1 | 1 | OO |
| Oct 2024 | 62 | 5 | 0 | 0 | OO |
| Sep 2024 | 60 | 14 | 0 | 0 | OO |
| Aug 2024 | 62 | 14 | 0 | 0 | OO |
| Jul 2024 | 62 | 14 | 0 | 1 | OO |
| Jun 2024 | 60 | 14 | 0 | 2 | OO |
| May 2024 | 62 | 13 | 0 | 0 | OO |
| Apr 2024 | 60 | 6 | 0 | 0 | OO |
| Mar 2024 | 62 | 5 | 2 | 0 | OO |
| Feb 2024 | 58 | 13 | 1 | 0 | OO |
| Jan 2024 | 62 | 19 | 3 | 0 | OO |
HLN–DEN seasonal on-time pattern
Best: March (88.7%) · weakest: June (68.4%)
Strongest calendar month
March
88.7% on-time · ~44 flights/mo
Busiest calendar month
June
~70 flights/mo avg
Weakest calendar month
June
68.4% on-time · ~70 flights/mo
Cancellation Rate
1.1%
18 of 1,615 flights
Diversion Rate
1.1%
17 of 1,615 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
HLN - Helena
Full on-time, delay-cause, and seasonal performance for Helena, MT.
HLN on-time profileDEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
DEN on-time profileCompare the two airports
See HLN and DEN side by side on delays, cancellations, and reliability.
Compare HLN vs DENOrigin-hub reliability standing
Mid-pack among HLN departures
From HLN, this corridor sits with 2 other 75–85% on-time routes out of 3 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 0 below 75%). Destination: Denver · fleet on-time rank #2650 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to HLN–DEN.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About HLN to DEN
3,034 tracked flights put the HLN to DEN pairing (Helena to Denver) at a 81.2% on-time rate, squarely in line with the wider network. Delays that do occur run 130.8 minutes on average. Across the 594-mile route and its 1 carrier, the trailing 24 months show 1.1% cancelled and 1.1% diverted (1,615 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 54% - a 38-point swing worth factoring into travel timing.
On the multi-year calendar, HLN–DEN peaks in March at 88.7% on-time while June carries the heaviest traffic (~70 flights per month) ; the softest month is June at 68.4%, a 20.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does HLN to DEN rank among US routes by traffic? ▼
How often are flights delayed from HLN to DEN? ▼
What is the cancellation rate for HLN to DEN? ▼
How far is the flight from HLN to DEN? ▼
When is the best time to fly from HLN to DEN? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using HLN–DEN data
HLN–DEN is mid-pack at 81.2% on-time; month and carrier mix move more than the corridor headline.
- Compare HLN and DEN airport profiles: delay causes and top routes differ even on the same corridor. HLN airport
- If your dates flex, March (88.7% on-time) beats June (68.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.2% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.