Historical on-time performance
Baltimore to Denver
1,491 miData through Dec 2025Source: US DOT · BTS
Flights on BWI–DEN arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 2,914 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time83%Medianon timep9025 minCancel0.5%Flights983
- Southwest AirlinesOn-time72%Medianon timep9050 minCancel1.1%Flights1,931
Why flights run late
Delay causes
- Airline29%
- Weather8%
- Air traffic (NAS)35%
- Late aircraft27%
- 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 BWI → 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 — 87% on time.
- Mornings87% on time · p90 15 min · 3,026 flights
- Middays85% on time · p90 20 min · 1,849 flights
- Afternoons70% on time · p90 55 min · 2,163 flights
- Evenings59% on time · p90 75 min · 1,363 flights
- Overnights51% on time · p90 75 min · 726 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 78% on time.
- Sundays78% on time · p90 40 min · 1,271 flights
- Mondays78% on time · p90 30 min · 1,398 flights
- Tuesdays76% on time · p90 40 min · 1,282 flights
- Fridays74% on time · p90 45 min · 1,401 flights
- Thursdays74% on time · p90 40 min · 1,329 flights
- Wednesdays74% on time · p90 35 min · 1,305 flights
- Saturdays73% on time · p90 50 min · 1,141 flights
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