Flight OddsWN1855 DEN → ONT
Southwest Airlines · Denver, CO to Ontario, CA · 28 flights observed, 2026-03-05 to 2026-04-06 · 819 mi
WN1855 covers more than one route in the data window — the stats below are for DEN → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
75%
Median delay
+1 min
90th percentile
+24 min
Cancellation rate
0%
How often is WN1855 on time?
Across 28 flights on DEN → ONT from 2026-03-05 to 2026-04-06, WN1855 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +24 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 | 75% |
| 16-30 min | 5 | 18% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 23 | 74% | +13 min |
| 2026-04 | 5 | 80% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 4 | 100% |
| Wed | 4 | 75% |
| Thu | 5 | 80% |
| Fri | 5 | 60% |
| Sat | No data | — |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…