Historical on-time performance
Chicago to Oakland
1,844 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–OAK arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 401 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time68%Medianon timep9050 minCancel0.5%Flights401
Why flights run late
Delay causes
- Airline39%
- Weather4%
- Air traffic (NAS)20%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MDW → OAK
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 — 85% on time.
- Mornings85% on time · p90 20 min · 759 flights
- Afternoons70% on time · p90 50 min · 198 flights · limited
- Evenings68% on time · p90 50 min · 196 flights · limited
- Middays66% on time · p90 55 min · 143 flights · limited
- Overnights55% on time · p90 65 min · 496 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 77% on time.
- Tuesdays77% on time · p90 30 min · 258 flights
- Thursdays73% on time · p90 30 min · 262 flights
- Fridays73% on time · p90 40 min · 263 flights
- Saturdays73% on time · p90 45 min · 240 flights
- Wednesdays72% on time · p90 40 min · 258 flights
- Mondays71% on time · p90 45 min · 261 flights
- Sundays65% on time · p90 60 min · 250 flights
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