How often is UA4186 on time?

Across 16 flights on ORD → STL from 2025-12-02 to 2025-12-17, UA4186 arrived within 15 minutes of schedule 33% of the time. The median arrival delay was +54 min, and the worst 10% of flights arrived +164 min or later. 6% 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

• UA4186 on ORD → ROA (41 flights)
• UA4186 on IAD → BTV (1 flights)
• UA4186 on GSO → IAD (15 flights)
• UA4186 on PVD → IAD (2 flights)
• UA4186 on IAD → PVD (2 flights)
• UA4186 on ORD → TVC (1 flights)
• UA4186 on FAR → ORD (29 flights)
• UA4186 on EWR → ROC (23 flights)
• UA4186 on EWR → GSO (21 flights)
• UA4186 on CHA → ORD (36 flights)
• UA4186 on ORD → PIT (1 flights)
• UA4186 on ORD → MLI (96 flights)
• UA4186 on EWR → BUF (1 flights)
• UA4186 on IAD → ORF (3 flights)
• UA4186 on CVG → IAD (1 flights)
• UA4186 on AVL → ORD (3 flights)
• UA4186 on ORD → ABE (37 flights)

Related

• All United Airlines flights on ORD → STL
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• United Airlines on the return, STL → ORD