In a world of budget airlines and flights for as little as a dollar, it can be easy to think that flying is the only way to travel. Where once airplanes were reserved for crossing oceans and continents, the ease of domestic flying has meant that society is more and more used to getting aboard a plane to travel within the same country. It's cheaper, it's quicker and it's more efficient - or so we are told.
There is no doubt that in the 'quickest' category, flying by airplane is going to come up on top. Even when you factor in the time needed to travel to the airport and to check in, the simple fact is that flying at 500mph is going to be faster than any train, car or boat can manage.
Flying is also more efficient; you can take luggage without having to cart it around a train station or cram it in to the trunk of a car, and usually you can fly directly to your destination - or at the very least a nearby city.
But is it the cheapest?
Budget airlines and fares may look tempting, but it's essential to read the small print. Often, taxes and other charges - such as charges for checking in, or taking baggage - are levied on top, often at a premium price. Suddenly, that 99c flight is going to cost you $40 - it's still cheap, but not that cheap when you factor in travel to the airport.
The lesson is simple: don't assume flying is the best method of travel. Look around, keep your option open and - most importantly - always read the small print.