On low season, many airlines are offering promo of airfare tickets. The prices vary from only 5.000 rupiahs, buy one get one, or even free seats! Well don't be to happy because there is always terms and conditions apply. Promo tickets usually are offered far in advance. For example, three months before departure, six months, or even a year! If you want to book a ticket for next year's trips, it is the best choice. But you must note this, promo fares are mostly effective on weekdays. The lowest fare will be on weekdays, and on weekends or national holidays, don't expect too much. So, for you who have freelance job, you can consider this. But for 8-AM-Up-To-5-PM workers, think twice, because you have to be able to take longer leaves. I am having this experience this year. I booked the flight tickets at the beginning of the year and the trip is at the end of the year. In mid-year, I resigned from my job and got accepted in a new company. I am not entitled for annual leave yet. So, I have to change my trip itinerary, which costs me twice from the initial fares! Well, eventually it is not saving at all. One more thing about promo airfares is that no change itinerary can be made. Therefore, you need to buy the new tickets. Some airlines can do, but most budget airlines do not have this option ( I am referring to budget airlines, because I oftenly use that). It is better for you to check, once again, the terms and condition of the promo before booking. The other thing about promo airfare is that the most chances or retime, change flight, or even delayed flight. From my experience, I booked promo airfares five times, twice were retimed, and one was delayed. Therefore, do consider this on your trip itinerary also. Remember the quote, there is a price to pay for luxury and comfort. The choice is all yours.
Happy hunting!