The INSIDER Summary:
We looked at the differences between Economy and Economy Plus on six major airlines.
JetBlue has the most legroom in their Economy class (34 inches).
Spirit Airlines Economy class offers the least amount of legroom (28 inches), but their Big Front seats offer a massive upgrade, to 36 inches.
Delta's Comfort+ class offers the most perks.
Turbulence, a screaming baby, or sitting next to an armrest-hogger is generally out of your control.