How often is UA1139 on time?

Across 18 flights on PHX → DEN from 2026-02-12 to 2026-03-04, UA1139 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +5 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

Performance by month

Performance by day of week

Other routes

• UA1139 on EWR → LAS (41 flights)
• UA1139 on EWR → TPA (21 flights)
• UA1139 on DEN → IDA (67 flights)
• UA1139 on IND → SFO (37 flights)
• UA1139 on MIA → DEN (19 flights)
• UA1139 on ORD → SEA (16 flights)
• UA1139 on ORD → DSM (123 flights)

Related

• All United Airlines flights on PHX → DEN
• Compare airlines on PHX → DEN
• United Airlines on the return, DEN → PHX