There are a couple of ways you can use to fly for free.
Free air travel offers - The freebie offers available online today keep evolving, bringing dedicated freebie hunters amazing free stuff.
This includes the ability to get 2 and even 4 free airline tickets, in exchange to completing trial offers, sampling products, or applying to get free price quotes for an advertised service.
Frequent flyer - This is the most ancient way to score free tickets.
By signing up to one of the major airlines frequent flyer programs, you will get a free ticket once you complete a couple of paid flights.
This method, of course, does not suit does who don't fly very often, or cannot fly with the same airline each time.
For those, the following option might be a bettr fit.
Get Compensated with Free Air Travel.
Those who fly a lot are already making use of this method to get both free airline tickets and cash.
How does this work? First, it is important to understand that all major airlines overbook their flights.
What happens then is that some of the people that show up to fly cannot take this flight, and must be compensated.
If you're thinking to yourself that this is weird, or asking how can airlines afford to compensate so many people (remember, this happens with all major airlines, whenever they manage to overbook), the truth it - It costs less than the alternative.
So passengers are asked to give up their sit, and get a free ticket or a couple hundreds of dollars (depending on how long they will have to wait for the next available flight leaving for their destination), and those who agree, get the compensation.
If you want to make sure you will be offered such a deal, you need to ask your travel agent (or check online) how booked is the flight that you are ordering.
Avoid buying tickets to flights that are usually not overbooked (like the red eye in some places).
You also need to check in to your flight early: This improves your chances of being requested to forfeit your sit.