#Onthisday in 1941, San Francisco Airport became an U.S. Army Air Corps training and staging facility... #throwbackthursday #sfohistory #worldwar2 #ww2 #avgeek #avationgeek #aviation #aviationhistory #history #avhistory #aviationgeeks #avgeeks

Among the early photos of SFO is this picture of United Air Lines' modest ticket counter in the airport's original administrative building... #FlyingTheMainLine #ThrowbackThursday #TheMainLine #avgeek #united #aviationhistory #unitedairlines #aviationgeek #aviation #sfohistory

#Onthisday last year, SFO's new air traffic control tower was activated... #sfohistory #sfo #faa #avgeek #avationgeek #aviation #aviationhistory #aviationlovers #vintageaviation #history #avhistory #aviationgeeks #flying #flight #avgeeks #aviation4u #aviationdaily #airtrafficcontrol #airtrafficcontroltower

#OnThisDay in 1971, the first Douglas DC-10 service started at San Francisco International Airport... #united #unitedairlines #dc10 #douglasaircraft #SFO #sanfrancisco #sfohistory #sfhistory #trijet #widebody #unitedairlines #airport #avgeek #avationgeek #aviation #aviationhistory #jetliner #aviationlovers #vintageaviation #history #avhistory #aviationgeeks #instaplane #flying #plane #flight #airline #avgeeks #aircraft

Do you remember this terminal at SFO?.. #TBT #ThrowbackThursday #united #unitedairlines #sfohistory #sfo

The Airport is hosting a ground-breaking ceremony today for a new hotel... #hilton #grandhyatt #hyatt #hotels #sfohistory #avgeek #aviationhistory #sfhistory #tigeragogo

When the Air Mail Act of 1925 was passed, the City and County of San Francisco recognized the economic importance of establishing a municipal airport as the western terminus of a transcontinental airmail route... #SFOat90 #waybackwednesday #sfohistory #avgeek #aviationhistory #SFHistory