BIL to DEN flight delays & on-time performance
Nonstop flights from Billings Logan International Airport to Denver International Airport · 455 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BIL or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Billings (BIL) to Denver (DEN) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.7% were cancelled, and 7% arrived an hour or more late.
- United Airlines was the most punctual airline here (83% on time); SkyWest Airlines was the least (82%).
- Departures scheduled around 5am did best (95% on time); around 4pm did worst (65%).
- Tuesday was the most reliable day to fly (86% on time) and Friday the least (78%).
- The largest source of delay minutes was late-arriving aircraft (34%).
Which airline is most on time from BIL to DEN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 83% | 0.1% | 13 min | 5.9% | 729 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 82% | 1.1% | 15 min | 8.2% | 1,049 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am95%219 flights
- 6am91%100 flights
- 7am92%265 flights
- 10am91%363 flights
- 2pm74%360 flights
- 4pm65%147 flights
- 5pm69%250 flights
- 6pm69%71 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%0.8% cancelled
- Tuesday86%0.8% cancelled
- Wednesday83%0.8% cancelled
- Thursday82%0.4% cancelled
- Friday78%0.8% cancelled
- Saturday82%0.8% cancelled
- Sunday85%0.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft34%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion26%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather62%
- Air traffic control & airport congestion31%
- Airline (crew, maintenance, cleaning, fueling)8%
- Security0%
BIL to DEN: common questions
- How often are BIL to DEN flights on time?
- 82% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Billings to Denver cancelled?
- 0.7% of scheduled flights were cancelled (13 of 1,778).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 78 min behind schedule on average, and 7.3% of flights were an hour or more late.
- How long is taxi time at BIL?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to BIL — 81% on time
More flights from Billings
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BIL → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.