Originally Posted by
orcanova
That used to be the case, and I've often got my bike case on for free just by big-tipping the skycap up front and having him push it through without a charge, but I think the airlines are strapped right now and they are all under orders to charge for any large or overweight bag. In fact I just flew American and every checked bag is subject to a charge, so once they are looking at your bags and charging fees, it might be hard to avoid a bike charge.
However, it may be easier to coax them into charging just for a bag, instead of the bike fee, or whichever one is cheaper, especially if its light and compact. That's why I like the Sci-con case: its only about 8 lbs, so with a 15 lbs bike its under 25 lbs.
It still depends on the airline. If you're going to fly with US airlines, you'll definitely be charged. But if you're going to go with other, nicer airlines, the charges will likely be less or possibly even free. Have a look at that link I posted.