UA2251Chicago to San Francisco
United Airlines flight UA2251 flies from Chicago O'Hare (ORD) to San Francisco (SFO), 2,964 km. Over August 2025 to July 2026 it usually arrives about 5 minutes late: 79% of 230 flights arrived within 15 minutes of schedule and 0.4% were cancelled (US Department of Transportation data).
On-time record, last 12 months
Every operation of UA2251, August 2025 to July 2026: 230 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA2251
Other flights from Chicago to San Francisco
More about Chicago O'Hare (ORD) and San Francisco (SFO).
Embed this on your site
A live badge for travel blogs, forums and trip reports. It updates as new data comes in, and links back here for the full stats.
<a href="https://tripstow.com/flights/ua2251" title="UA2251 is on time 79% of the time on TripStow"><img src="https://tripstow.com/badge/flights/ua2251.svg" alt="UA2251 is on time 79% of the time" width="360" height="88" loading="lazy"></a>
<a href="https://tripstow.com/flights/ua2251" title="UA2251 is on time 79% of the time on TripStow"><img src="https://tripstow.com/badge/flights/ua2251.svg?theme=light" alt="UA2251 is on time 79% of the time" width="360" height="88" loading="lazy"></a>[](https://tripstow.com/flights/ua2251)Flying soon?
Forward your booking to TripStow and get your trip built for you, with check-in reminders, punctuality for every flight and a map of everywhere you have been.
Start free