Historical on-time performance
Baltimore to Denver
1,491 miData through May 2026Source: US DOT · BTS
Flights on BWI–DEN arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 2,843 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time85%Medianon timep9025 minCancel0.5%Flights932
- Southwest AirlinesOn-time71%Medianon timep9045 minCancel1.5%Flights1,911
Why flights run late
Delay causes
- Airline29%
- Weather8%
- Air traffic (NAS)35%
- Late aircraft27%
- Security1%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline18%
- Weather74%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 34 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BWI → DEN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 3,027 flights
- Middays83% on time · p90 20 min · 1,838 flights
- Afternoons70% on time · p90 55 min · 2,176 flights
- Evenings60% on time · p90 75 min · 1,414 flights
- Overnights51% on time · p90 75 min · 645 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 77% on time.
- Tuesdays77% on time · p90 40 min · 1,272 flights
- Sundays77% on time · p90 45 min · 1,266 flights
- Mondays77% on time · p90 35 min · 1,373 flights
- Thursdays76% on time · p90 40 min · 1,338 flights
- Wednesdays75% on time · p90 35 min · 1,284 flights
- Saturdays74% on time · p90 45 min · 1,173 flights
- Fridays74% on time · p90 45 min · 1,394 flights
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