Why the ‘O’ in San Francisco’s Airport Code, SFO?
Why the "O" in SFO? And why is one of Chicago's airports coded ORD? And IAD for Dulles?
Reported by Jessica Placzek. Bay Curious is Olivia Allen-Price, Vinnee Tong, Paul Lancour, Suzie Racho, Penny Nelson and Julia McEvoy. Theme music by Pat Mesiti-Miller.
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The skinny
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