DEN to BIL flight delays
Denver, CO (DEN) Billings, MT (BIL) · 455 miles
1,782 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
79.63%
Arrived on time
Within 15 minutes of schedule
0.73%
Cancelled
Share of scheduled flights
56 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In October it ran 29.8 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The 2 airlines here are separated by under 6 points — close enough to call a tie. Choose on price and departure time.
The Denver to Billings route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on DEN to BIL. United Airlines was late most often. Flights ran closest to schedule in October and worst in July.
Every airline on DEN to BIL
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 1,052 | 81.72% | 1.24% | 51 min | B |
| United Airlines | 730 | 76.65% | 0% | 61 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
BIL to DEN Billings back to Denver 82.25% on time BOther routes from Denver
Common questions
Are flights from Denver to Billings usually delayed?
79.63% of flights on the DEN to BIL route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Denver to Billings?
SkyWest Airlines, at 81.72% on time across 1,052 flights. The least punctual on the route was United Airlines at 76.65%.
How often are DEN to BIL flights cancelled?
0.73% of scheduled flights did not operate — about 7 in every thousand. That is in the normal range.
What is the best month to fly Denver to Billings?
October, when 91% of flights arrived on time. The worst was July at 61.2%.
When DEN to BIL flights are late, how late are they?
About 56 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on DEN to BIL during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →