How often is UA233 on time?

Across 37 flights on SFO → IAD from 2026-01-06 to 2026-02-11, UA233 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived -2 min or later. 5% 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

• UA233 on LAX → SFO (171 flights)
• UA233 on SFO → PHX (4 flights)
• UA233 on DFW → IAH (1 flights)
• UA233 on SFO → MCO (38 flights)
• UA233 on BNA → IAH (16 flights)
• UA233 on ORD → AUS (75 flights)
• UA233 on JAX → IAH (2 flights)
• UA233 on ORD → TVC (37 flights)
• UA233 on AUS → DEN (34 flights)

Related

• All United Airlines flights on SFO → IAD
• Compare airlines on SFO → IAD
• United Airlines on the return, IAD → SFO