Yes, in 2026, many airlines charge what is commonly referred to as a "Convenience Fee" or "Service Charge" for bookings made through their website or mobile app. While these fees are often hidden in the final "Taxes and Fees" breakdown, they can range from $10 to $40 per passenger per segment. Interestingly, some low-cost carriers (like Spirit or Allegro) actually offer a lower "base fare" if you purchase your tickets physically at the airport ticket counter, as this allows them to bypass certain federal excise taxes on the "convenience" portion of the fare. Additionally, if you book over the phone with a live agent, most legacy carriers (like Delta or United) will charge a "Direct Ticketing Fee" of $25 to $50. To avoid these "junk fees," savvy travelers often use specialized search engines that filter for "All-In" pricing or book through reputable Online Travel Agencies (OTAs) that may waive the service fee to remain competitive, though you should always verify the final price on the payment screen.