Yes, you should absolutely check in online in 2026, even if you have bags to drop off at the airport. Checking in via the airline's mobile app 24 hours before your flight allows you to secure your preferred seat, confirm your flight's status, and receive a digital boarding pass. Most importantly, it significantly speeds up your airport experience. Many modern airports now feature "Self-Service Bag Drop" kiosks; if you have already checked in online, you simply scan your digital boarding pass at the kiosk, print your own luggage tags, and place your bag on the automated belt. This allows you to bypass the long, slow-moving lines for the staffed "Full Service" check-in counters. Even if you prefer to use a staffed counter, being pre-checked online puts you in the faster "Bag Drop Only" lane. In 2026, many low-cost carriers also charge a "Counter Check-in Fee" (often $20 or more) if you haven't done it yourself via the app, making online check-in a vital step for both saving time and avoiding unnecessary administrative costs on your journey.