Historical on-time performance
New Orleans to Chicago
825 miData through Dec 2025Source: US DOT · BTS
Flights on MSY–MDW arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 1,016 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time81%Medianon timep9025 minCancel1.0%Flights1,016
Why flights run late
Delay causes
- Airline25%
- Weather7%
- Air traffic (NAS)11%
- Late aircraft55%
- Security1%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MSY → MDW
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 — 93% on time.
- Mornings93% on time · p90 5 min · 1,127 flights
- Middays85% on time · p90 20 min · 538 flights
- Afternoons76% on time · p90 30 min · 613 flights
- Overnights68% on time · p90 55 min · 377 flights
- Evenings62% on time · p90 50 min · 386 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 85% on time.
- Tuesdays85% on time · p90 20 min · 402 flights
- Saturdays84% on time · p90 20 min · 378 flights
- Wednesdays81% on time · p90 25 min · 399 flights
- Mondays80% on time · p90 25 min · 437 flights
- Sundays80% on time · p90 40 min · 554 flights
- Fridays79% on time · p90 30 min · 442 flights
- Thursdays78% on time · p90 30 min · 429 flights
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