How often is UA400 on time?

Across 37 flights on SFO → LAS from 2025-10-26 to 2025-12-01, UA400 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +26 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

• UA400 on OKC → DEN (2 flights)
• UA400 on RIC → DEN (3 flights)
• UA400 on DEN → ANC (70 flights)
• UA400 on RIC → IAH (1 flights)
• UA400 on ABQ → IAD (53 flights)
• UA400 on RSW → EWR (15 flights)
• UA400 on DEN → MCO (21 flights)
• UA400 on JAC → EWR (37 flights)
• UA400 on SMF → ORD (17 flights)
• UA400 on SFO → PHL (2 flights)
• UA400 on DEN → IAD (16 flights)
• UA400 on RDM → SFO (37 flights)
• UA400 on SBA → SFO (31 flights)
• UA400 on TUS → DEN (17 flights)
• UA400 on ORD → FAI (6 flights)

Related

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