You can use just your ID until later this year. The REAL ID doesn't take effect until October, I think.
Drivers license is good enough for now
Domestic flights only require normal ID until Real ID becomes mandatory. Alternatively you can also use your passport card (or book) as a form of ID. It's my understanding that Passport cards are only ok for domestic flights.
I have flown to SJC, ID is fine...
You're valid, state issued photo ID should work. But passports are always the safest bet if you're worried about it.
An ID should be fine. You only need a passport if you are flying out of the country.
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