Historical on-time performance
Chicago to Baltimore
611 miData through May 2026Source: US DOT · BTS
Flights on MDW–BWI arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled2.7%of scheduled flights
based on 1,759 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9035 minCancel2.7%Flights1,759
Why flights run late
Delay causes
- Airline32%
- Weather2%
- Air traffic (NAS)17%
- Late aircraft48%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline4%
- Weather71%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 48 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 MDW → 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 — 90% on time.
- Mornings90% on time · p90 10 min · 2,050 flights
- Middays81% on time · p90 30 min · 1,177 flights
- Afternoons70% on time · p90 50 min · 815 flights
- Evenings63% on time · p90 60 min · 972 flights
- Overnights59% on time · p90 75 min · 701 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 80% on time.
- Tuesdays80% on time · p90 30 min · 759 flights
- Wednesdays79% on time · p90 35 min · 799 flights
- Saturdays78% on time · p90 30 min · 649 flights
- Thursdays78% on time · p90 40 min · 847 flights
- Fridays77% on time · p90 35 min · 914 flights
- Sundays74% on time · p90 45 min · 847 flights
- Mondays73% on time · p90 45 min · 900 flights
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