SFO is San Francisco
An airport in the United States. SFO is its three-letter IATA code, the one on your boarding pass and bag tag.
- IATA code
- SFO
- Airport
- San Francisco
- Country
- United States
- Region
- Americas
Why is it SFO?
The letters S, F and O all appear, in that order, in “San Francisco”, which makes this one of the easier codes to remember.
Don't mix it up with
These codes look or sound close to SFO.
Other airports in the United States
Quick check
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Common questions
What airport is SFO?
SFO is the IATA code for San Francisco in the United States.
What is the airport code for San Francisco?
The three-letter IATA code for San Francisco is SFO.