Tipping in airport lounges is never expected, but in 2026, it is increasingly appreciated, particularly in the United States. In most international lounges (especially in Asia or Europe), the service is inclusive and tipping can sometimes be seen as confusing or even offensive. However, in U.S. lounges like the Amex Centurion, Delta Sky Club, or United Club, many guests choose to tip a few dollars for specific personalized services. For example, it is common to tip $1–$3 per drink to a bartender who makes a custom cocktail, or $5–$10 to a waiter if you are in a "sit-down" dining area with full table service (like American Airlines' Flagship First Dining). Because the food and drinks are "free" to the guest, the staff's efforts are often overlooked, yet they work high-volume, high-stress shifts. While you should never feel pressured to tip—especially if you are just grabbing a buffet plate—a small gratuity for attentive service is a gracious way to acknowledge the staff's hard work in a busy transit environment.