Flight OddsUA2121 DEN → GRR
United Airlines · Denver, CO to Grand Rapids, MI · 176 flights observed, 2026-01-06 to 2026-06-30 · 1,015 mi
UA2121 covers more than one route in the data window — the stats below are for DEN → GRR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
72%
Median delay
-1 min
90th percentile
+54 min
Cancellation rate
0%
How often is UA2121 on time?
Across 176 flights on DEN → GRR from 2026-01-06 to 2026-06-30, UA2121 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +54 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 | 126 | 72% |
| 16-30 min | 16 | 9% |
| 31-60 min | 15 | 9% |
| 61-120 min | 9 | 5% |
| 2+ hrs | 8 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 25 | 60% | +24 min |
| 2026-02 | 28 | 71% | +13 min |
| 2026-03 | 30 | 70% | +15 min |
| 2026-04 | 30 | 83% | +1 min |
| 2026-05 | 31 | 77% | +6 min |
| 2026-06 | 30 | 70% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 72% |
| Tue | 26 | 81% |
| Wed | 25 | 80% |
| Thu | 25 | 60% |
| Fri | 24 | 67% |
| Sat | 25 | 76% |
| Sun | 24 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…