Yes, you can—and in 2026, you generally should do web check-in even if you have luggage. Checking in online or via a mobile app allows you to secure your preferred seat and receive your digital boarding pass well before arriving at the airport. Once you get to the terminal, you do not need to stand in the main check-in line. Instead, you proceed directly to the "Bag Drop" or "Self-Service Luggage" counters. In 2026, most major airports (like Heathrow, Hong Kong, and Dubai) have automated bag-drop machines where you simply scan your mobile boarding pass, print your own luggage tag, and place the bag on the conveyor belt. This process is significantly faster than traditional counter check-in. For international flights, you may still need to have your passport briefly verified by a staff member at the bag drop, but completing the web check-in first ensures you have cleared the most time-consuming part of the administrative process before you even leave your home.