Flights for the airplane with tail number N27421 These are not all the flights for this airplane, just the ones that have flown in and out of SFO since we've been counting. See all the airports this plane has visited for those flights or all the airplanes we've logged so far.

UA2279 (SFO-LAX)
This United Airlines flight between San Francisco International Airport and Los Angeles International Airport, on November 20, 2023, was operated by another airline. It departed from gate E3. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA2279.
UA1836 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on November 19, 2023, was operated by another airline. It arrived at gate F3. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA1836.
UA2096 (SFO-LAX)
This United Airlines flight between San Francisco International Airport and Los Angeles International Airport, on November 01, 2023, was operated by another airline. It departed from gate E5. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA2096.
UA2611 (LAX-SFO)
This United Airlines flight between Los Angeles International Airport and San Francisco International Airport, on November 01, 2023, was operated by another airline. It arrived at gate E5. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA2611.
UA1718 (SFO-LAX)
This United Airlines flight between San Francisco International Airport and Los Angeles International Airport, on November 01, 2023, was operated by another airline. It departed from gate E7. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA1718.
UA447 (LAX-SFO)
This United Airlines flight between Los Angeles International Airport and San Francisco International Airport, on November 01, 2023, was operated by another airline. It arrived at gate E7. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA447.
UA1216 (SFO-DEN)
This United Airlines flight between San Francisco International Airport and Denver International Airport, on October 31, 2023, was operated by another airline. It departed from gate E13. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA1216.
UA1057 (DEN-SFO)
This United Airlines flight between Denver International Airport and San Francisco International Airport, on October 31, 2023, was operated by another airline. It arrived at gate E13. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA1057.
UA3874 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on October 25, 2023. It departed from gate F16. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA3874.
UA2238 (IAH-SFO)
This United Airlines flight between George Bush Intercontinental Airport and San Francisco International Airport, on October 24, 2023, was operated by another airline. It arrived at gate E11. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA2238.
UA522 (BOI-SFO)
This United Airlines flight between Boise Air Terminal and San Francisco International Airport, on October 08, 2023, was operated by another airline. It arrived at gate E5. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA522.
UA646 (SFO-PDX)
This United Airlines flight between San Francisco International Airport and Portland International Airport, on October 08, 2023, was operated by another airline. It departed from gate E10. Passengers were flying aboard a Boeing 737-900 with tail number N27421. See all the flights for UA646.