You should not need a passport to buy them, but if you are flying out of the country you will need your passport when you do leave to be able to get to your gate
To answer this, you would have to say where you are flying to and from. Airfares can range dramatically from a couple hundred dollars to a couple thousand. It all depends on where you are flying and...
Many of the travel websites that compete for your business will offer cheap flights. recently, the air line websites have become very competitive and hard to beat for the cheap seats, so check the...