United Airlines
UA423Houston to Denver
United Airlines flight UA423 flies from Houston (IAH) to Denver (DEN), 1,387 km. Over October 2025 to March 2026 it usually arrives about 4 minutes late: 81% of 179 flights arrived within 15 minutes of schedule and 0.6% were cancelled (US Department of Transportation data).
On-time record, last 12 months
81%
on time (within 15 min)
12%
more than 30 min late
0.6%
cancelled
+4 min
average arrival vs schedule
Every operation of UA423, October 2025 to March 2026: 179 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA423
- Houston (IAH) to Denver (DEN)37 flights
- Newark Liberty (EWR) to Orlando (MCO)37 flights
- Spokane (GEG) to Denver (DEN)25 flights
- Denver (DEN) to Houston (IAH)24 flights
- Denver (DEN) to Detroit (DTW)21 flights
- Denver (DEN) to Columbus (CMH)19 flights
- Denver (DEN) to Grand Rapids (GRR)16 flights
Other flights from Houston to Denver
More about Houston (IAH) and Denver (DEN).
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