United Airlines
UA2121Denver to Grand Rapids
United Airlines flight UA2121 flies from Denver (DEN) to Grand Rapids (GRR), 1,629 km. Over August 2025 to July 2026 it usually arrives about 19 minutes late: 62% of 432 flights arrived within 15 minutes of schedule and 0.5% were cancelled (US Department of Transportation data).
On-time record, last 12 months
62%
on time (within 15 min)
25%
more than 30 min late
0.5%
cancelled
+19 min
average arrival vs schedule
Every operation of UA2121, August 2025 to July 2026: 432 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA2121
- Denver (DEN) to Grand Rapids (GRR)206 flights
- San Francisco (SFO) to Denver (DEN)53 flights
- Seattle Tacoma (SEA) to San Francisco (SFO)53 flights
- Kalispell (FCA) to Denver (DEN)52 flights
- Newark Liberty (EWR) to Denver (DEN)31 flights
- Washington Dulles (IAD) to Denver (DEN)19 flights
- Denver (DEN) to El Paso (ELP)18 flights
Other flights from Denver to Grand Rapids
More about Denver (DEN) and Grand Rapids (GRR).
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