Flights for UA8221 These are not all the flights that UA8221 has taken, just some of them that have flown in or out of SFO

UA8221 (IAH-SFO)
This United Airlines flight traveled from George Bush Intercontinental Airport to San Francisco International Airport, on December 12, 2022. Passengers were flying aboard a Boeing 737-900 with tail number N39475. See all the flights for UA8221.
UA8221 (SFO-PHX)
This United Airlines flight traveled from San Francisco International Airport to Sky Harbor International Airport, on August 10, 2022. Passengers were flying aboard a Boeing 737-800 with tail number N76502. See all the flights for UA8221.
UAL8221 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on February 23, 2007. Passengers were flying aboard an Airbus A319. See all the flights for UA8221.
UAL8221 (EWR-SFO)
This United Airlines flight traveled from Newark International Airport to San Francisco International Airport, on May 21, 2006. Passengers were flying aboard a Boeing 757-200. See all the flights for UA8221.
UAL8221 (KLAS-SFO)
This United Airlines flight traveled from McCarran International Airport to San Francisco International Airport, on October 03, 2017. Passengers were flying aboard a Boeing 737-800. See all the flights for UA8221.
UAL8221 (SEA-SFO)
This United Airlines flight traveled from Tacoma International Airport to San Francisco International Airport, on January 06, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA8221.
UAL8221 (SFO-BOS)
This United Airlines flight traveled from San Francisco International Airport to Gen E L Logan International Airport, on March 29, 2015. Passengers were flying aboard a Boeing 737-800. See all the flights for UA8221.
UAL8221 (SFO-DFW)
This United Airlines flight traveled from San Francisco International Airport to Dallas-Fort Worth International Airport, on November 19, 2006. Passengers were flying aboard an Airbus A319. See all the flights for UA8221.
UAL8221 (SFO-MMMX)
This United Airlines flight traveled from San Francisco International Airport to Benito Juarez International Airport, on November 18, 2015. Passengers were flying aboard an Airbus A320-200. See all the flights for UA8221.
UAL8221 (SFO-SAN)
This United Airlines flight traveled from San Francisco International Airport to San Diego International Airport, on July 06, 2008. Passengers were flying aboard an Airbus A319. See all the flights for UA8221.

All these flight data are available as openly licensed data on the sfomuseum-data GitHub account. If you'd like to read more about our efforts to archive flight data at SFO Museum have a look a the Mills Field weblog posts tagged "flightdata".