I asked the same question about 6 months ago and got a very helpful answer. Go to the website for Sporty's Pilot Shop. Search around their store and you will find a set of three maps, double sided, that cover the entire United States. The maps overlay the high altitude jet routes, which you will normally travel on, and it is very easy to follow along (as long as it's a clear day). Each of the jet routes has a different number and now when I get on a plane, I duck into the cockpit and explain that I just bought the maps and wish to follow along, and then I ask the pilots if they could tell me which jet routes we'll be flying on. Without exception, pilots are enthusiastic to provide this information. Let me know if you can't find the maps on the websit. Plus, they're only about $18 for the set.