United Airlines
UA421Santa Ana to Denver
United Airlines flight UA421 flies from Santa Ana (SNA) to Denver (DEN), 1,360 km. Over August 2025 to July 2026 it usually arrives about 9 minutes late: 79% of 444 flights arrived within 15 minutes of schedule and 0.2% were cancelled (US Department of Transportation data).
On-time record, last 12 months
79%
on time (within 15 min)
14%
more than 30 min late
0.2%
cancelled
+9 min
average arrival vs schedule
Every operation of UA421, August 2025 to July 2026: 444 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA421
- Santa Ana (SNA) to Denver (DEN)187 flights
- Denver (DEN) to Milwaukee (MKE)138 flights
- Denver (DEN) to Washington Dulles (IAD)72 flights
- Denver (DEN) to Louisville (SDF)24 flights
- Salt Lake City (SLC) to Denver (DEN)19 flights
- Denver (DEN) to Portland (PWM)3 flights
- Los Angeles (LAX) to Phoenix Sky Harbor (PHX)1 flights
Other flights from Santa Ana to Denver
More about Santa Ana (SNA) and Denver (DEN).
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