UA2109: Chicago to San Francisco
United Airlines flight UA2109 flies from Chicago O'Hare (ORD) to San Francisco (SFO), 2,964 km. Over September 2025 to May 2026 it usually arrives right on schedule: 79% of 107 flights arrived within 15 minutes of schedule and 0% were cancelled (US Department of Transportation data).
On-time record, last 12 months
Every operation of UA2109, September 2025 to May 2026: 107 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA2109
Other flights from Chicago to San Francisco
More about Chicago O'Hare (ORD) and San Francisco (SFO).
Questions and answers
- Is UA2109 usually on time?
- 79% of United Airlines flight UA2109's 107 flights from September 2025 to May 2026 arrived within 15 minutes of schedule. It arrived close to schedule on average.
- How often is UA2109 cancelled or badly delayed?
- 0% of UA2109's scheduled flights were cancelled from September 2025 to May 2026 (0 of 107), and 16% of the flights that operated arrived more than 30 minutes late.
- What route does UA2109 fly?
- UA2109 most often flies from Chicago O'Hare (ORD) to San Francisco (SFO), 2,964 km (32 flights in the period). The same flight number also flew Newark Liberty (EWR) to Savannah Hilton Head (SAV), Los Angeles (LAX) to Denver (DEN), Houston (IAH) to Santa Ana (SNA).
- Where do these UA2109 figures come from?
- From the US Bureau of Transportation Statistics (BTS) on-time records, which cover every domestic flight by the larger US airlines. The figures cover September 2025 to May 2026 and are updated each month when new BTS data is published, about two months after the month ends. See how TripStow measures punctuality.
How does United Airlines compare? United Airlines' on-time record and the US airline league table.
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