Tried several times to book online for my wife and I using my credit card. The airline website requires a security check, which I allowed. But the system concluded that card is stolen and refused my payment. I called Visa, they haven't received any request from the airline. I called the airline agents several times and beg them to contact their IT about the problem. They are not understanding and cooperative at all. Very frustating experience!
Compare prices: On LowCostRoutes.com you can find the list of all the airlines flying from an airport/city to another. This way, you will know exactly which low cost airlines offer cheap flights on your route and you will be able to compare their prices and schedules in order to choose the flights that suit you best.