Flight OddsWN3515 MDW → DEN
Southwest Airlines · Chicago, IL to Denver, CO · 33 flights observed, 2026-03-05 to 2026-04-06 · 895 mi
WN3515 covers more than one route in the data window — the stats below are for MDW → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
53%
Median delay
+14 min
90th percentile
+98 min
Cancellation rate
3%
How often is WN3515 on time?
Across 33 flights on MDW → DEN from 2026-03-05 to 2026-04-06, WN3515 arrived within 15 minutes of schedule 53% of the time. The median arrival delay was +14 min, and the worst 10% of flights arrived +98 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 53% |
| 16-30 min | 2 | 6% |
| 31-60 min | 6 | 19% |
| 61-120 min | 5 | 16% |
| 2+ hrs | 2 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 26 | 58% | +27 min |
| 2026-04 | 6 | 33% | +37 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 20% |
| Tue | 3 | 100% |
| Wed | 4 | 75% |
| Thu | 5 | 40% |
| Fri | 5 | 40% |
| Sat | 5 | 60% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…