Flight OddsWN1521 PHX → MDW
Southwest Airlines · Phoenix, AZ to Chicago, IL · 24 flights observed, 2026-04-09 to 2026-06-01 · 1,444 mi
WN1521 covers more than one route in the data window — the stats below are for PHX → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-1 min
90th percentile
+22 min
Cancellation rate
0%
How often is WN1521 on time?
Across 24 flights on PHX → MDW from 2026-04-09 to 2026-06-01, WN1521 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +22 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 20 | 83% |
| 16-30 min | 2 | 8% |
| 31-60 min | 2 | 8% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 10 | 80% | +4 min |
| 2026-05 | 13 | 85% | +5 min |
| 2026-06 | 1 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 63% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 8 | 100% |
| Fri | 8 | 88% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…