United Airlines
UA1023Denver to Chicago
United Airlines flight UA1023 flies from Denver (DEN) to Chicago O'Hare (ORD), 1,426 km. Over August 2025 to July 2026 it usually arrives about 20 minutes late: 68% of 600 flights arrived within 15 minutes of schedule and 0.7% were cancelled (US Department of Transportation data).
On-time record, last 12 months
68%
on time (within 15 min)
19%
more than 30 min late
0.7%
cancelled
+20 min
average arrival vs schedule
Every operation of UA1023, August 2025 to July 2026: 600 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA1023
- Denver (DEN) to Chicago O'Hare (ORD)364 flights
- Sacramento (SMF) to Denver (DEN)72 flights
- Chicago O'Hare (ORD) to Washington Dulles (IAD)55 flights
- Austin Bergstrom (AUS) to Denver (DEN)31 flights
- San Francisco (SFO) to Denver (DEN)24 flights
- Chicago O'Hare (ORD) to Cleveland Hopkins (CLE)20 flights
- Los Angeles (LAX) to Denver (DEN)19 flights
- Chicago O'Hare (ORD) to Columbus (CMH)15 flights
Other flights from Denver to Chicago
More about Denver (DEN) and Chicago O'Hare (ORD).
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