Route · DEN → HLN · 2020–2025 BTS data
Denver to Helena
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DEN to HLN (Denver to Helena) ranks #3280 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.5%
- On-time
- +2.5 pts
- vs US avg
- 87 min
- Delay when late
- 3,036
- Flights
- #3280 of 4927
- Corpus placement
Cancelled
1.4%
Best Month
Mar 2024 92%
Worst Month
Feb 2025 59%
Distance
594 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 62 | 13 | 0 | 1 | OO |
| Nov 2025 | 59 | 7 | 1 | 0 | OO |
| Oct 2025 | 87 | 9 | 0 | 0 | OO |
| Sep 2025 | 90 | 16 | 0 | 0 | OO |
| Aug 2025 | 93 | 33 | 2 | 3 | OO |
| Jul 2025 | 91 | 32 | 4 | 1 | OO |
| Jun 2025 | 90 | 35 | 2 | 0 | OO |
| May 2025 | 72 | 17 | 2 | 0 | OO |
| Apr 2025 | 60 | 15 | 1 | 0 | OO |
| Mar 2025 | 62 | 10 | 0 | 0 | OO |
| Feb 2025 | 56 | 23 | 0 | 0 | OO |
| Jan 2025 | 62 | 19 | 1 | 2 | OO |
| Dec 2024 | 62 | 10 | 0 | 0 | OO |
| Nov 2024 | 59 | 14 | 3 | 0 | OO |
| Oct 2024 | 62 | 6 | 0 | 0 | OO |
| Sep 2024 | 60 | 9 | 0 | 0 | OO |
| Aug 2024 | 62 | 19 | 0 | 0 | OO |
| Jul 2024 | 62 | 11 | 0 | 0 | OO |
| Jun 2024 | 60 | 15 | 0 | 1 | OO |
| May 2024 | 62 | 9 | 1 | 0 | OO |
| Apr 2024 | 60 | 10 | 0 | 0 | OO |
| Mar 2024 | 62 | 5 | 3 | 0 | OO |
| Feb 2024 | 58 | 11 | 1 | 1 | OO |
| Jan 2024 | 62 | 15 | 2 | 1 | OO |
DEN–HLN seasonal on-time pattern
Best: March (87.8%) · weakest: February (70.6%)
Strongest calendar month
March
87.8% on-time · ~44 flights/mo
Busiest calendar month
June
~70 flights/mo avg
Weakest calendar month
February
70.6% on-time · ~57 flights/mo
Cancellation Rate
1.4%
23 of 1,615 flights
Diversion Rate
0.6%
10 of 1,615 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
DEN on-time profileHLN - Helena
Full on-time, delay-cause, and seasonal performance for Helena, MT.
HLN on-time profileCompare the two airports
See DEN and HLN side by side on delays, cancellations, and reliability.
Compare DEN vs HLNOrigin-hub reliability standing
Mid-pack among DEN departures
From DEN, this corridor sits with 133 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 27 below 75%). Destination: Helena · fleet on-time rank #2539 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DEN–HLN.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About DEN to HLN
3,036 tracked flights put the DEN to HLN pairing (Denver to Helena) at a 81.5% on-time rate, squarely in line with the wider network. Delays that do occur run 87.4 minutes on average. Across the 594-mile route and its 1 carrier, the trailing 24 months show 1.4% cancelled and 0.6% diverted (1,615 flights sampled).
The monthly split is wide on this route: Mar 2024 posted the strongest performance at 92% on-time, while Feb 2025 came in at just 59% - a 33-point swing worth factoring into travel timing.
On the multi-year calendar, DEN–HLN peaks in March at 87.8% on-time while June carries the heaviest traffic (~70 flights per month) ; the softest month is February at 70.6%, a 17.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DEN to HLN rank among US routes by traffic? ▼
How often are flights delayed from DEN to HLN? ▼
What is the cancellation rate for DEN to HLN? ▼
How far is the flight from DEN to HLN? ▼
When is the best time to fly from DEN to HLN? ▼
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 DEN–HLN data
DEN–HLN is mid-pack at 81.5% on-time; month and carrier mix move more than the corridor headline.
- Compare DEN and HLN airport profiles: delay causes and top routes differ even on the same corridor. DEN airport
- If your dates flex, March (87.8% on-time) beats February (70.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.5% 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.