How often is UA255 on time?

Across 40 flights on ATW → DEN from 2026-05-22 to 2026-06-30, UA255 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +19 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

• UA255 on AUS → LAX (1 flights)
• UA255 on ATL → EWR (21 flights)
• UA255 on ORD → SAV (32 flights)
• UA255 on RSW → ORD (35 flights)
• UA255 on BWI → ORD (6 flights)
• UA255 on SFO → PHL (3 flights)
• UA255 on LGA → ORD (1 flights)
• UA255 on EWR → CLT (37 flights)
• UA255 on AUS → EWR (101 flights)
• UA255 on CLE → IAD (16 flights)
• UA255 on EGE → IAD (3 flights)
• UA255 on ORD → BWI (47 flights)
• UA255 on DEN → PHL (35 flights)
• UA255 on EWR → BUF (1 flights)
• UA255 on SFO → AUS (31 flights)
• UA255 on LAX → PHX (3 flights)
• UA255 on BZN → SFO (3 flights)
• UA255 on EWR → PWM (4 flights)

Related

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