This depends on your departure date, and the carrier you will be flying with. Your agent will provide you with a ticketing deadline and will work with you to try and accommodate any financial issues that come up. It's always better to pay sooner rather than later because the only 100% guarantee to lock in a fare is to have it ticketed. It's also good to note that taxes and fuel surcharges tend to increase closer to the departure date, and those are out of our control. If your leaving within 30 days, your payment will typically be due in 7-10 days.