SFO
3 letters
Historical clue formulations
- Bay Area airport code — 2026-06-17
- Where to catch a Bay Area flight — 2026-03-03
- Penultimate stop on the red BART line, in brief — 2025-11-11
- Terminus of one BART line, in brief — 2025-11-05
- West Coast airport code — 2025-08-24
- Bay Area airport code — 2025-06-30
- West Coast air hub — 2025-05-13
- BART stop, for short — 2025-03-16
- Bay Area airport code — 2025-01-27
- West Coast airport code — 2025-01-12
- W. Coast hub for United Airlines — 2024-11-14
- West Coast airport code — 2023-12-27
- Airport served by BART, for short — 2023-11-29
- West Coast hub for United — 2023-09-27
- Bay Area air hub — 2023-08-28
- Bay Area airport code — 2023-08-22
- Bay Area airport code — 2023-06-04
- NorCal hub — 2023-03-12
- Airport with a BART station — 2022-10-09
- United hub, on luggage tags — 2022-09-25
- Bay Area airport code — 2022-05-01
- Airport with a Harvey Milk terminal: Abbr. — 2022-03-06
- NorCal airport — 2021-11-19
- Bay Area airport code — 2021-10-12
- United Airlines hub, for short — 2021-09-11
- LAX's counterpart in northern California — 2021-08-17
- Bay Area hub, for short — 2021-05-03
- Hub NW of LAX — 2021-02-23
- Terminus for some BART riders — 2020-10-03
- California's second-busiest airport, after LAX — 2020-04-28
- Airport across the bay from OAK — 2020-01-21
- Air hub between LAX and Sea-Tac — 2019-09-12
- West Coast airport code — 2019-08-15
- West Coast air hub, for short — 2019-06-11
- West Coast air hub, for short — 2019-05-09
- Busy W. Coast airport — 2017-12-21
- Bay Area airport code — 2017-08-02
- Trans-Pacific flight destination, for short — 2017-03-04
- Airport up the coast from LAX — 2017-02-27
- W. Coast air hub — 2017-01-15
- Main hub for Virgin America, for short — 2016-10-07
- Destination for some BART riders, for short — 2016-09-11
- Calif. air hub — 2015-06-11
- Bay Area airport inits. — 2015-06-08
- Landing place on a bay, for short — 2015-04-12
- Destination between LAX and Sea-Tac — 2014-12-28
- United hub, briefly — 2014-05-24
- Airport on a bay, for short — 2014-04-13
- Bay Area airport, briefly — 2013-11-19
- Calif. air hub — 2013-08-19