The first tip is to have an ideal budget. My budget depends on where I am going and what I want to do (and you should really be thinking about that). For me, I travel within the USA all the time (once I decide to travel internationally, I will write a page for it). Since I am not going out of the country, I set my budget to $1000. Now $1000 doesn't sound like a lot but with the way I travel, $1000 goes a long way.
So now you have set your budget. Let's start planning. When do we go on vacation? For now, I don't have any kids so I am very flexible with my travel dates. I usually take advantage at the fact that I have no kids. The best time to travel for you childless travelers is whenever kids are in school. Here are the best travel times and why:
January: At this time of year, most of the USA is cold. Nobody really likes to travel during the winter months because of the winter weather. Most airlines offer discounts since it is one of their slowest time of the year. (Kids are in school, people are back and recovering from the holidays, etc.)
May: Early to Mid-May is usually a good time to travel. Kids are still in school, it's not quite summer yet and the weather is good at this time. Mid-May is when most college students are done with school and heading home.
September: I love traveling in September. Kids are back in school meaning it is a lot more quieter and less lines anywhere.
Months to avoid: February (some school districts have February vacation break), March (college spring break), April (spring break), July (everywhere at this point is expensive), August (last minute summer break), November, and December (holiday time...yuck!)
HELPFUL TIP: Subscribe to airline or travel websites (like Expedia). Sure, it is more junk mail but this will let you in on all the deals and perks.