How often is UA1537 on time?

Across 31 flights on PHL → DEN from 2026-05-21 to 2026-06-30, UA1537 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -3 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

• UA1537 on DEN → JAC (274 flights)
• UA1537 on ORD → RSW (32 flights)
• UA1537 on LAS → DEN (21 flights)
• UA1537 on XNA → DEN (37 flights)
• UA1537 on IAD → DEN (53 flights)
• UA1537 on SJC → DEN (37 flights)
• UA1537 on PIT → DEN (31 flights)

Related

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