You can use following methods to reduce the cost.
-Try to find less expensive destination. Air fares to different destinations differ. So choose less expensive destination. You can find a destination to meet your need for a lesser price. You have to research a lot.
-You can visit your destination in off season. The cost of traveling is less in off-season. Also sometimes flying on a weekend cost more than a weekday.
-It is very important to buy travel insurance before leaving. If you are traveling with a group, buy
group travel insurance . It will save you a lot.
-Some websites offer last minute deals for a very less cost. Keep your eye on such promotions.