To find cheap flight tickets on KAYAK, visit Kayak.com and select Flights. Enter your proposed departure and destination airports and travel dates in the search box. Maximize your options by checking the boxes to include nearby airports and by selecting to travel three days either side of your proposed dates.
At this stage you can also opt to compare the prices of flights for your route on a range of travel sites, including Expedia and Orbitz, with the prices shown on KAYAK.
Press Search to view KAYAK's list of the flights available on your route within your given dates and arranged in order of price from the cheapest to the most expensive. You can refine the list by applying a range of filters that include nonstop flights, airline carriers and flight quality. The cheapest flights are most likely to be with budget airlines departing early in the morning or late at night.
When you have found a suitable flight, visit each of the comparison sites listed on the page of flights to ensure KAYAK is offering the cheapest price. You don't have to re-enter your flight details. Finally, visit your chosen airline's website to carry out a new search for your chosen flight, as you can sometimes find the cheapest price by booking direct with the carrier.