Air travel has become an increasingly popular form of transportation in developing countries, but it’s a pricey one to get tickets to and from major cities, especially in wealthy nations such as the United States.

In fact, a recent report by the London-based Global Cities Index found that the average fare from a major American city to a major city in Ecuador was nearly 20 percent higher than the average for that country.

And with the cost of air travel soaring and the travel options limited to just a few destinations, many people are turning to alternative means of getting around.

Here are seven of the most affordable ways to get around the world.

Air travel is expensive and hard to find Cheap airfare is usually available for a fraction of what you might pay in a hotel.

Some popular routes from major American cities are: New York City – $20 to $50 a night