Connect without reclearing TSA
Since June 2024 a sterile walkway links A–T1–T2–T3–G. If you are already through security, walk — don’t ride AirTrain (that dumps you landside).

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Since June 2024 a sterile walkway links A–T1–T2–T3–G. If you are already through security, walk — don’t ride AirTrain (that dumps you landside).
Everyone on an international arrival clears CBP, then re-clears security for a domestic connection. Budget extra time even with Global Entry.
Domestic: 2 hours. International: 3 hours. Summer mornings often bring marine layer; United and Alaska banks bunch at T3 and T1.
Join “#SFO FREE WIFI”. Outlets are at most gates; yoga rooms and Kids’ Spots are post-security in T1, T2, and T3.
Terminals move. Confirm your boarding pass, then treat this as the map. Live flight boards: flysfo.com.