United Airlines
UA599Washington to Denver
United Airlines flight UA599 flies from Washington Dulles (IAD) to Denver (DEN), 2,332 km. Over August 2025 to July 2026 it usually arrives about 12 minutes late: 76% of 365 flights arrived within 15 minutes of schedule and 0.8% were cancelled (US Department of Transportation data).
On-time record, last 12 months
76%
on time (within 15 min)
14%
more than 30 min late
0.8%
cancelled
+12 min
average arrival vs schedule
Every operation of UA599, August 2025 to July 2026: 365 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA599
Other flights from Washington to Denver
More about Washington Dulles (IAD) and Denver (DEN).
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