Historical on-time performance
Chicago to Memphis
491 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–MEM arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 1,921 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.
- Republic AirwaysOn-time70%Medianon timep90100 minCancel1.1%Flights88
- SkyWest AirlinesOn-time75%Medianon timep9045 minCancel0.6%Flights617
- Envoy AirOn-time74%Medianon timep9045 minCancel2.1%Flights940
- United AirlinesOn-time67%Medianon timep9085 minCancel1.4%Flights276
Why flights run late
Delay causes
- Airline29%
- Weather12%
- Air traffic (NAS)21%
- Late aircraft38%
- Security0%
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 ORD → MEM
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 66% to 80% on time.
- Mornings80% on time · p90 30 min · 1,614 flights
- Middays80% on time · p90 30 min · 962 flights
- Afternoons76% on time · p90 50 min · 965 flights
- Evenings72% on time · p90 60 min · 555 flights
- Overnights66% on time · p90 75 min · 1,412 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 78% on time.
- Tuesdays78% on time · p90 40 min · 757 flights
- Wednesdays77% on time · p90 55 min · 769 flights
- Mondays76% on time · p90 40 min · 836 flights
- Saturdays76% on time · p90 45 min · 701 flights
- Thursdays75% on time · p90 55 min · 808 flights
- Fridays72% on time · p90 45 min · 821 flights
- Sundays72% on time · p90 50 min · 817 flights
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