Historical on-time performance
Chicago to Baltimore
Flights on ORD–BWI arrive on time 70% of the time over the last 12 months.
based on 2,366 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.
- Envoy AirOn-time73%Medianon timep9050 minCancel3.8%Flights932
- United AirlinesOn-time70%Medianon timep9055 minCancel1.3%Flights1,094
- Republic AirwaysOn-time68%Medianon timep9075 minCancel4.3%Flights187
- Southwest AirlinesOn-time60%Median5 minp9060 minCancel1.3%Flights153
Why flights run late
Delay causes
- Airline21%
- Weather11%
- Air traffic (NAS)23%
- Late aircraft45%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline2%
- Weather51%
- Air traffic (NAS)47%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 59 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 ORD → BWI
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 — 86% on time.
- Mornings86% on time · p90 15 min · 2,382 flights
- Middays77% on time · p90 45 min · 1,939 flights
- Afternoons71% on time · p90 55 min · 1,115 flights
- Overnights69% on time · p90 65 min · 429 flights
- Evenings63% on time · p90 70 min · 2,223 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 78% on time.
- Tuesdays78% on time · p90 45 min · 1,108 flights
- Saturdays76% on time · p90 50 min · 986 flights
- Wednesdays76% on time · p90 45 min · 1,130 flights
- Thursdays75% on time · p90 45 min · 1,231 flights
- Mondays74% on time · p90 50 min · 1,227 flights
- Sundays73% on time · p90 55 min · 1,188 flights
- Fridays71% on time · p90 50 min · 1,220 flights
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