Southwest Airlines PHX to MDW on-time performance
Southwest Airlines nonstop flights from Phoenix to Chicago · Aug 2025 – Jul 2026
On-time arrivals
72%
arrived < 15 min late
Cancelled
1.1%
29 flights
Avg arrival delay
15 min
48 min when late
Rank on route
#1 of 2
route average 72% on time
Key facts
- Southwest Airlines flights on PHX to MDW arrived on time 72% of the time in Aug 2025 – Jul 2026.
- 1.1% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 72% on time overall.
- The largest source of delay minutes was late-arriving aircraft (44%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion14%
- Extreme weather3%
- Security0%
Other airlines on PHX to MDW
- Frontier Airlines67% on time · 28 min avg delay
Full PHX to MDW comparison →
Southwest Airlines on-time record across all routes →
2,639 Southwest Airlines flights tracked on this route; 29 cancelled, 17 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.