Historical on-time performance
Chicago to Phoenix
1,444 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–PHX arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 2,725 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.
- Southwest AirlinesOn-time77%Medianon timep9035 minCancel1.4%Flights2,694
- Frontier AirlinesOn-time77%Medianon timep9030 minCancel0.0%Flights31
Why flights run late
Delay causes
- Airline36%
- Weather2%
- Air traffic (NAS)17%
- Late aircraft44%
- 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 MDW → PHX
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 — 88% on time.
- Mornings88% on time · p90 15 min · 2,930 flights
- Middays81% on time · p90 25 min · 1,884 flights
- Afternoons69% on time · p90 45 min · 1,282 flights
- Evenings63% on time · p90 55 min · 1,445 flights
- Overnights60% on time · p90 65 min · 1,534 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 78% on time.
- Saturdays78% on time · p90 30 min · 1,083 flights
- Mondays76% on time · p90 35 min · 1,387 flights
- Tuesdays76% on time · p90 35 min · 1,294 flights
- Fridays76% on time · p90 40 min · 1,372 flights
- Wednesdays74% on time · p90 35 min · 1,294 flights
- Sundays73% on time · p90 45 min · 1,282 flights
- Thursdays71% on time · p90 45 min · 1,363 flights
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