NOT RECOMMENDED - the vast majority of countries will not let you in
If you are a UK citizen you can probably do this with only 1 week left
You can go there only if you are an EU citizen. If not, then you should renew the passport before traveling.
most likely but i'd get it renewed soon
Yes. You need a passport to fly anywhere.
Yes you need a valid passport to fly from Glasgow to Spain.
yes of course you need a passport to fly to las Vegas you need a passport to fly anywhere! No you don't if you live in the United States you don't need a passport to fly to Las Vegas.
Short answer is no. you need to have at least six months left on any passport to be able to travel.
You don't need a passport to book an international airline ticket but many countries require you to have a passport that has at least 6 months left before it expires. This is checked by the airline at check-in time.
Yes you have to have a passport when you leave the country.
Yes, you need a passport.
You need a passport or an ID.
No, for domestic flights, you will need a form of photographic ID, not necessarily a passport.