Flight OddsWN4277 MDW → DSM
Southwest Airlines · Chicago, IL to Des Moines, IA · 20 flights observed, 2026-06-04 to 2026-06-29 · 306 mi
WN4277 covers more than one route in the data window — the stats below are for MDW → DSM, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
35%
Median delay
+28 min
90th percentile
+85 min
Cancellation rate
0%
How often is WN4277 on time?
Across 20 flights on MDW → DSM from 2026-06-04 to 2026-06-29, WN4277 arrived within 15 minutes of schedule 35% of the time. The median arrival delay was +28 min, and the worst 10% of flights arrived +85 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 | 35% |
| 16-30 min | 4 | 20% |
| 31-60 min | 4 | 20% |
| 61-120 min | 5 | 25% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-06 | 20 | 35% | +32 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 4 | 25% |
| Fri | 4 | 50% |
| Sat | 4 | 25% |
| Sun | 4 | 0% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…