Hey folks, last summer I had to cancel a JetBlue flight from NYC to Boston—work trip gone sideways. Best way? Log into your JetBlue account online right away (don't call first). Go to "Manage Trips," select the flight, and hit "Cancel Flight." Pick full refund if within 24 hours of booking (their policy rocks for that). I got mine credited back in 7 days, no hassle. Pro tip: Modify instead if date changes suit—cheaper fees. Screenshot everything! Saved me headaches. Check jetblue.com/terms for your ticket rules.YMMV based on fare.