Yes, you need a passport to fly out of Tijuana.
Yes, you need a passport to fly from Tijuana to Guadalajara.
No, you cannot fly from Tijuana without a passport.
No, you cannot fly out of Tijuana without a passport.
No, you cannot fly from Tijuana to Mexico without a passport.
No, you cannot fly out of Tijuana without a passport. A valid passport is required for international flights.
No, it is not possible to fly from Tijuana to Guadalajara without a passport.
No, you cannot fly from Tijuana to Guadalajara without a passport as it is a domestic flight within Mexico.
No, it is not possible to fly from Tijuana to Cancun without a passport. A valid passport is required for all international flights within Mexico.
If you are already in Mexico, sure you can.
You don't need a passport if you are coming back from Tijuana, I asked the immigration people and they said it's fine with the ID and Birth Certificate. Actually if you go walking there are 2 lines one for passport and the other one is for people that don't carry passport.
Yes, passports are required on flights between most countries these days.
Yes.