How often is UA644 on time?

Across 52 flights on BNA → IAH from 2025-10-26 to 2025-12-17, UA644 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +15 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

• UA644 on DEN → PDX (312 flights)
• UA644 on DFW → DEN (62 flights)
• UA644 on PHL → DEN (11 flights)
• UA644 on IAD → DEN (21 flights)
• UA644 on SYR → DEN (21 flights)
• UA644 on MIA → DEN (37 flights)
• UA644 on BZN → DEN (1 flights)
• UA644 on SFO → EUG (37 flights)
• UA644 on PDX → SFO (38 flights)
• UA644 on LGA → DEN (31 flights)

Related

• All United Airlines flights on BNA → IAH
• Compare airlines on BNA → IAH
• United Airlines on the return, IAH → BNA