Flight OddsWN4621 HOU → MDW
Southwest Airlines · Houston, TX to Chicago, IL · 13 flights observed, 2026-03-09 to 2026-04-06 · 937 mi
WN4621 covers more than one route in the data window — the stats below are for HOU → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
54%
Median delay
+12 min
90th percentile
+104 min
Cancellation rate
0%
How often is WN4621 on time?
Across 13 flights on HOU → MDW from 2026-03-09 to 2026-04-06, WN4621 arrived within 15 minutes of schedule 54% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +104 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 | 7 | 54% |
| 16-30 min | 1 | 8% |
| 31-60 min | 2 | 15% |
| 61-120 min | 2 | 15% |
| 2+ hrs | 1 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 10 | 60% | +27 min |
| 2026-04 | 3 | 33% | +65 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 4 | 50% |
| Fri | 4 | 50% |
| 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…