As much as I'd like to see airline travelers riding bikes to and from distant airports, I have to admit: for now it's a foolish idea. Here's why:
A new folding bike that you'd actually feel safe riding is going to cost roughly $700 to $2000+. If you are going to purchase the bike bag/case along with it, add another $250-400.
For the flight, you'll have a one-way baggage fee ranging from
- free (perhaps on an intl. flight), to
- $15-$25 (a folding bike that can squeeze down to 62 linear inches (i.e., length + width + height) - and you'd better hope they don't know it's a bike), to
- $175 for a full-size bike box on Northwest Airlines
If you plan on riding off into the sunset upon landing, your adventure has just begun. For starters, you'll be needing lights.