No, only when you leave the borders of the US.
Yes, you do not need a passport to fly to the US Virgin Islands if you are a US citizen.
Yes, you can use a foreign passport to fly in the US as long as it is valid and meets the entry requirements set by the US government.
You can fly to Mexico, but, you won't be able to fly back to the US.
Seeing as Texas and Louisiana are both US States, no you do need a passport to fly between them.
No. To fly an airplane you need a pilot's license. To fly on an airplane within the USA, NTSA guidelines require a passport (foreign or US), US passport card, or US drivers license or non-drivers license.
YES
yes
Not if staying in country.
You do not need a passport to fly to another state in the US You DO need a passport to travel anywhere out of the US ie Mexico, Canada ect...
No, you do not need a passport inside the US but you will need a valid picture ID.
No, you cannot fly within the US with an expired passport. You will need a valid form of identification, such as a driver's license or state ID, to board a domestic flight.
Yes, because you need it to come back in. You need your passport to travel anywhere in the world.