Flight OddsWN1434 BOS → MDW
Southwest Airlines · Boston, MA to Chicago, IL · 34 flights observed, 2025-08-05 to 2025-10-01 · 861 mi
WN1434 covers more than one route in the data window — the stats below are for BOS → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
62%
Median delay
-5 min
90th percentile
+74 min
Cancellation rate
0%
How often is WN1434 on time?
Across 34 flights on BOS → MDW from 2025-08-05 to 2025-10-01, WN1434 arrived within 15 minutes of schedule 62% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +74 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 | 21 | 62% |
| 16-30 min | 4 | 12% |
| 31-60 min | 4 | 12% |
| 61-120 min | 3 | 9% |
| 2+ hrs | 2 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 16 | 81% | +11 min |
| 2025-09 | 17 | 41% | +31 min |
| 2025-10 | 1 | 100% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 9 | 33% |
| Wed | 9 | 44% |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 8 | 88% |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…