Historical on-time performance
Phoenix to Chicago
1,444 miData through May 2026Source: US DOT · BTS
Flights on PHX–MDW arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 2,679 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time73%Medianon timep9040 minCancel1.1%Flights2,679
Why flights run late
Delay causes
- Airline37%
- Weather3%
- Air traffic (NAS)16%
- Late aircraft43%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline23%
- Weather70%
- Air traffic (NAS)7%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 30 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 PHX → 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 — 90% on time.
- Mornings90% on time · p90 10 min · 3,217 flights
- Middays78% on time · p90 30 min · 1,890 flights
- Afternoons70% on time · p90 45 min · 1,827 flights
- Evenings65% on time · p90 55 min · 1,769 flights
- Overnights58% on time · p90 60 min · 370 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 81% on time.
- Wednesdays81% on time · p90 25 min · 1,261 flights
- Saturdays81% on time · p90 25 min · 1,074 flights
- Tuesdays79% on time · p90 30 min · 1,261 flights
- Fridays76% on time · p90 35 min · 1,396 flights
- Sundays75% on time · p90 40 min · 1,300 flights
- Thursdays75% on time · p90 40 min · 1,386 flights
- Mondays75% on time · p90 35 min · 1,395 flights
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