Search for flights using budget flight finding websites. These websites search for deals and allow buyers to compare flight prices across different airlines and ticket sellers. Popular websites include Travelocity.com, Cheapflights.com and Tripadvisor.com. Register with these sites by creating an account name and password, since you'll need it to buy plane tickets. Plug in the search dates and times of your trip and look at the deals that are shown. Try a varying your dates of travel, if possible, as one day of the week may be more expensive than the next. These sites also allow you to compare deal offers on other websites.
Sign up for trip alerts on useful websites that let you know when airfare prices go down. Sign up for the alert by visiting the website, and letting them know which destinations you may be interested in, along with general discounted airfare. Check your email often, as the deals may only last a short amount of time. Visit the website Airfare Watchdog to sign up for deal alerts and see the website Smarter Travel to sign up for alerts and budget travel newsletters.
Travel during off-peak seasons and times. According to CBS News, many cheaper flights are released during the middle of week. Flights may be cheaper during the winter seasons, as well, according to travel website Transitions Abroad. Investigate the prices by plugging in the dates you want to fly ahead of time and finding out what the prices are in comparison to flight prices during other times of the year.