Definitely. Passports last for 10 years. Many countries won't allow even allow entry if you are less than six months from expiry.
A person may still travel to any country as long as the passport is not expired. How long before it expires is not taken into account unless the passport expires before the traveler is expected to return.
You can travel up until the year it expires.
You cannot travel internationally with an expired passport. You will encounter incredibly long delays and problems if your passport expires while you travel. If a passport is lost, a temporary passport may be issued but any visas will need to be re-applied for.
Yes, it is good until it expires.
You may eventually, but after tons of trouble you will encounter in the US.
If there is some significant chance that your travels will continue beyond the point at which your passport expires, you would be better off applying for a new passport before you leave the country. If your schedule is very reliable, and you will be back before your passport expires, you can use the one you have.
Short answer is no. you need to have at least six months left on any passport to be able to travel.
== == Determine when your passport expires and subtract 3 or 4 months from that date to allow for renewal. == == == ==
Certain countries require that there be a minimum time left on your passport before you can enter the country (eg 3 years to expiry) As these are generally countries ther require a visa to enter, the information should be given to you by the travel agent or particular embassy. But I don't think you can travel if your passport will expire before your return date unless you're an EU Citizen within an EU state because then there are ways to get a new one from home.
YES,IF IS ONE WEEK AFTER YOU COME BACK>
If you are a Philippine Passport holder then Yes, you can travel with less that 5 months in it since you are a Filipino citizen by law. But if you are a foreign passport holder you must have atleast 6 months of validity in it.
Most countries would not let you enter unless the passport remains valid for the length stay. For Mexico, this usually means you can travel up until 6 months before your passport expires; otherwise most airlines will not allow you to board the plane.