Flight OddsUnited Airlines · San Francisco, CA to Las Vegas, NV · 35 flights observed, 2026-05-21 to 2026-06-24 · 414 mi
UA2421 covers more than one route in the data window — the stats below are for SFO → LAS, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA2421 on time?
Across 35 flights on SFO → LAS from 2026-05-21 to 2026-06-24, UA2421 arrived within 15 minutes of schedule 46% of the time. The median arrival delay was +19 min, and the worst 10% of flights arrived +108 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 | 16 | 46% |
| 16-30 min | 6 | 17% |
| 31-60 min | 6 | 17% |
| 61-120 min | 4 | 11% |
| 2+ hrs | 3 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 11 | 64% | +27 min |
| 2026-06 | 24 | 38% | +37 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 5 | 40% |
| Wed | 5 | 20% |
| Thu | 5 | 100% |
| Fri | 5 | 20% |
| Sat | 5 | 20% |
| 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…