73% of flights from Denver to Butte arrived on time over the past 12 months. That is worse than the typical U.S. route. 12% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for DEN → BTM: when a flight was late, it was under 45 minutes late 45% of the time. About 1 in 9 flights landed an hour or more late, and 1 in 33 three hours or more; 0.5% were cancelled outright.
- On time or early73%
- 15–30 min late6.6%
- 30–60 min late8.5%
- 1–2 hours late6.3%
- 2–3 hours late1.6%
- 3+ hours late3.0%
- Diverted0.3%
- Cancelled0.5%
Share of all 365 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| United Airlines | 365 | 73% | 0.5% | −5 min | 11.0% | +119 min | SkyWest |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
By month
Each calendar month pooled over 2023–2026.
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 53 | — | — |
| Tuesday | 52 | — | — |
| Wednesday | 52 | — | — |
| Thursday | 52 | — | — |
| Friday | 52 | — | — |
| Saturday | 52 | — | — |
| Sunday | 52 | — | — |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: weather 1 · air traffic/airport 1
Month by month
Not enough months with data to draw a trend.
Flight numbers on this route
Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.
| Flight | Departs | Flights | On time | Cancelled | Typical arrival | Operated by |
|---|---|---|---|---|---|---|
| UA 5030 | 8:20 p.m. | 339 | 72% | 0.6% | −5 min | SkyWest |
Nearby airport alternatives
Other ways to make the same trip, using airports within 60 miles of Denver or Butte. DEN → HLN has been 7 points more reliable.
| Route | Flights | On time | Cancelled |
|---|---|---|---|
| DEN → BTM (this route) | 365 | 73% | 0.5% |
| DEN → HLN Denver to Helena | 783 | 80% | 0.5% |
Questions
How often are flights from DEN to BTM on time?
73% of 365 scheduled flights from Denver, CO to Butte, MT arrived within 15 minutes of schedule between September 2025 and August 2026. 0.5% were cancelled.
Related
- BTM → DEN (return)
- Denver (DEN) delays by hour
- United Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.