How often is UA2421 on time?

Across 10 flights on MKE → DEN from 2025-08-01 to 2025-08-18, UA2421 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +9 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

• UA2421 on TPA → IAH (6 flights)
• UA2421 on SFO → LAS (35 flights)
• UA2421 on DEN → IND (103 flights)
• UA2421 on RNO → DEN (32 flights)
• UA2421 on DEN → RSW (24 flights)
• UA2421 on PSP → DEN (24 flights)
• UA2421 on IND → ORD (87 flights)
• UA2421 on ORD → EWR (17 flights)
• UA2421 on LAS → SFO (16 flights)

Related

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