UA321Chicago to Phoenix
United Airlines flight UA321 flies from Chicago O'Hare (ORD) to Phoenix Sky Harbor (PHX), 2,313 km. Over October 2025 to May 2026 it usually arrives about 2 minutes late: 79% of 242 flights arrived within 15 minutes of schedule and 0.4% were cancelled (US Department of Transportation data).
On-time record, last 12 months
Every operation of UA321, October 2025 to May 2026: 242 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA321
Other flights from Chicago to Phoenix
More about Chicago O'Hare (ORD) and Phoenix Sky Harbor (PHX).
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