To receive a free checked bag on JetBlue, you generally need to be a primary cardholder of the JetBlue Plus Card or the JetBlue Business Card. The benefit applies to the primary cardholder and up to three companions traveling on the same reservation. To activate this perk, you must use your JetBlue card to purchase the flight, and your TrueBlue member number must be linked to the booking at the time of purchase. In 2026, the savings are significant—standard first-bag fees can range from $35 to $60 depending on whether you are in a "Peak" or "Off-Peak" period. It is important to note that the "JetBlue Card" (the no-annual-fee version) typically does not offer a free checked bag. Additionally, this benefit applies specifically to JetBlue-operated flights; if you are flying on a codeshare partner like Hawaiian Airlines, the partner’s baggage fees will usually apply regardless of your credit card status.