Carrier route record
OOBHM→DEN
SkyWest Airlines · Birmingham to Denver
- Flights
- 604
- Period
- September 2025 to August 2026
- Share of route
- 49%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on BHM to DEN earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 604 flights, with a median arrival 13 minutes early.
Set against the rest of the country, SkyWest's BHM to DEN record is 13 points better than the US average of 77.3%. That gap is worth roughly 127 fewer late arrivals for every thousand flights.
Key figures
On time
90.0%
Arrivals under 15 minutes late, of 602 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
0.33%
National rate is 1.89%
Whole route
83.2%
Every carrier on BHM to DEN, 1,236 flights
These figures cover 604 flights between September 2025 and August 2026. The median arrival is 13 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
SkyWest against every carrier on BHM to DEN
SkyWest flew 604 of the 1,236 flights on BHM to DEN, about 49% of it. Its 90.0% on time is 7 points better than the route as a whole, which runs 83.2%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 90.0% to United at 72.1%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 604 | 90.0% | 81 min | 0.33% | A+ |
| Southwest Airlines | 509 | 77.8% | 57 min | 0.00% | B+ |
| United Airlinesthin sample | 123 | 72.1% | 79 min | 0.81% | C+ |
Flight by flight
SkyWest flight numbers on BHM to DEN
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 604 flights.
- 5am–8am24 flights—
- 8am–11am339 flights93.2%
- 11am–2pm—
- 2pm–5pm241 flights85.4%
- 5pm–8pm—
- 8pm–5am—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
The early departures do better, though not dramatically: 93.2% on time for the 8am–11am window against 85.4% for 2pm–5pm. Worth taking if the schedule allows, not worth an extra connection. The 8am–11am window is the busiest, with 339 flights scheduled in it.
Across the year
SkyWest on BHM to DEN through the year
Delays peak in September, when the on-time rate falls to 83.1%. June is the strongest month at 100.0%. Moving a flexible trip across that boundary buys 17 points. January was the busiest month here, with 62 flights.
Across the week, Saturday is the strongest day at 94.0% on time and Tuesday the weakest at 87.4%, a spread of 7 points.
Arrival by arrival
How late SkyWest on BHM to DEN runs when it is late
SkyWest on BHM to DEN often beats the schedule: 274 of 602 completed flights, 46%, arrived 15 minutes or more early. The 60 late arrivals split 18 under half an hour, 14 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early274 flights45.5%
- Within 15 min268 flights44.5%
- 15–29 min late18 flights3.0%
- 30–59 min late14 flights2.3%
- 1–2 hours late18 flights3.0%
- 2+ hours late10 flights1.7%
Scale runs 0% to 100%.
Share of 602 completed flights by arrival against schedule.
A late pushback is often recovered here: of 57 departures that left 15 minutes late or more, 20 still arrived on time. 23 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on BHM to DEN
The latest arrival of the period was on 8 March 2026, 6 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 March 2026 | 6 hours 12 minutes | Carrier |
| 25 April 2026 | 6 hours 8 minutes | Carrier |
| 8 September 2025 | 5 hours 58 minutes | Carrier |
| 24 August 2026 | 4 hours 8 minutes | National Airspace System |
| 19 December 2025 | 4 hours 6 minutes | Late-arriving aircraft |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 52% of the 4,875 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 32%National Airspace System
- 12%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,530 of the 4,875 delay minutes reported here. The split is drawn from 4,875 reported delay minutes.
32% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,582 minutes out of 4,875, against a national NAS share of 21%.
Cancellations are rare at 0.33%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 1,083 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 79.2% on time across 604 flights, 11 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 11 points of difference.
One caution: this is a thin sample. 604 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on BHM to DEN
Put together: treat all of this as provisional. 604 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 90.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 602 completed flights over 12 months sit behind that.
Related
Where to go next
- BHM to DEN, every carrier
- SkyWest on DEN to BHM, the return leg
- Southwest Airlines on BHM to DEN77.8%
- United Airlines on BHM to DEN72.1%
- SkyWest Airlines network-wide record
- Denver International (DEN) delay statistics
- Worst months to fly in the US, ranked by the data
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.