how much does it cost to change a jetblue flight
6.4k Views. Because JetBlue does not overbook their flights like many carriers, a cancelled flight increases the potential that the seat be left unsold at time of flight. JetBlue will generally require a change/cancel fee of $100 to offset the potential losses incurred.JetBlue does offer refundable fares for customers that require flexibility in their schedule and will also look at individual customer concerns on a case by case basis..4k Views. Because JetBlue does not overbook their flights like many carriers, a cancelled flight increases the potential that the seat be left unsold at time of flight. JetBlue will generally require a change/cancel fee of $100 to offset the potential losses incurred.