Historical on-time performance
Birmingham to Denver
1,083 miData through Dec 2025Source: US DOT · BTS
Flights on BHM–DEN arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 1,035 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- SkyWest AirlinesOn-time80%Medianon timep9045 minCancel0.5%Flights728
- Southwest AirlinesOn-time82%Medianon timep9035 minCancel0.3%Flights307
Why flights run late
Delay causes
- Airline36%
- Weather2%
- Air traffic (NAS)42%
- Late aircraft20%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BHM → DEN
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 15 min · 1,504 flights
- Middays77% on time · p90 35 min · 522 flights
- Afternoons74% on time · p90 55 min · 1,173 flights
- Evenings52% on time · p90 100 min · 52 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 83% on time.
- Tuesdays83% on time · p90 35 min · 471 flights
- Wednesdays83% on time · p90 30 min · 470 flights
- Mondays81% on time · p90 35 min · 471 flights
- Thursdays81% on time · p90 30 min · 462 flights
- Saturdays80% on time · p90 35 min · 440 flights
- Fridays80% on time · p90 35 min · 467 flights
- Sundays80% on time · p90 40 min · 470 flights
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