Historical on-time performance
Nashville to Chicago
395 miData through May 2026Source: US DOT · BTS
Flights on BNA–MDW arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 1,908 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time77%Medianon timep9040 minCancel1.3%Flights1,908
Why flights run late
Delay causes
- Airline27%
- Weather3%
- Air traffic (NAS)13%
- Late aircraft57%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline4%
- Weather96%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 25 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 BNA → MDW
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 — 92% on time.
- Mornings92% on time · p90 5 min · 1,745 flights
- Middays86% on time · p90 20 min · 1,145 flights
- Afternoons77% on time · p90 35 min · 1,026 flights
- Overnights74% on time · p90 45 min · 1,094 flights
- Evenings67% on time · p90 65 min · 870 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 86% on time.
- Saturdays86% on time · p90 20 min · 628 flights
- Wednesdays86% on time · p90 20 min · 818 flights
- Tuesdays83% on time · p90 30 min · 818 flights
- Mondays81% on time · p90 35 min · 896 flights
- Fridays80% on time · p90 30 min · 910 flights
- Thursdays80% on time · p90 35 min · 896 flights
- Sundays76% on time · p90 40 min · 914 flights
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