JetBlue Airways Corporation just increased checked bag fees for the first time since March 2024, bringing the minimum cost to check a bag from $35 to $39. Fees now cost $4 to $9 more, depending on travel dates. This news comes amid rising jet fuel prices and may raise concerns among travelers about whether other major U.S. airlines will follow suit. Here’s what you need to know. How much more will travelers pay?   Effective March 30, JetBlue raised checked bag fees by $4...