Do a search for flights on the website Kayak by clicking on the "Flights" link on the left side of the homepage.
Type in your starting city or airport code of the airport you are flying from in the "From" box. Type in the destination city or airport code of the airport into which you are flying in the "To" box.
In the "Depart" box type in the date you are leaving, or simply click on the calendar icon on the right of the box. In the "Return" box type in the date you are returning from your destination, or simply click on the calendar icon on the right of the box. You will then get a list of airfares that meet your criteria.
Do a search for flights on Mobissimo's homepage where you are immediately directed to a flight search. (See References)
In the "From" box, type in your starting city or click on the orange airport link to find the code of the airport you are flying from. In the "To" box type in the destination city or click on the orange airport link to find the code of the airport you are flying into.
Click on the "Departing Date" to select the month and day of when you are departing, or click on the calendar icon to the right to select the date. Click on the "Returning Date" to select the month and day of when you are returning, or click on the calendar icon to the right to select the date.
Click on the boxes underneath the departing and returning boxes that allow you to compare prices with other travel websites such as Travelocity and Orbitz. You will then get redirected to a page with a list of results found on Mobissimo and separated pages for results on each of the other travel websites.