How often is UA1156 on time?

Across 36 flights on LAS → DEN from 2025-10-26 to 2025-12-01, UA1156 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +13 min or later. 3% 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

• UA1156 on LGA → ORD (94 flights)
• UA1156 on ORD → SAN (21 flights)
• UA1156 on IAH → LGA (21 flights)
• UA1156 on ORD → PSP (45 flights)
• UA1156 on PHX → ORD (24 flights)
• UA1156 on ORD → RSW (38 flights)
• UA1156 on IAD → PBI (37 flights)
• UA1156 on ORD → CVG (2 flights)
• UA1156 on ORF → ORD (16 flights)
• UA1156 on DEN → ORD (6 flights)
• UA1156 on STL → ORD (116 flights)
• UA1156 on ORD → FAT (37 flights)
• UA1156 on ORD → MSY (48 flights)

Related

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