In 2026, "Off-Peak" times on London's rail network (including the Tube, Overground, Elizabeth line, and National Rail) generally apply on weekdays outside the busy morning and evening rush hours. Specifically, peak fares are charged from 06:30 to 09:30 and from 16:00 to 19:00, Monday through Friday. Therefore, off-peak times occur anytime before 06:30, between 09:30 and 16:00, and after 19:00 on weekdays. Notably, all travel on Saturdays, Sundays, and public holidays is classified as off-peak. If you use an "Off-Peak Day Travelcard," it is typically valid starting at 09:30 on weekdays. For National Rail journeys ending in London, the morning off-peak usually begins when the train arrives at the London terminus after 10:00. Always check for "Super Off-Peak" options, which are even cheaper but often restricted to specific midday windows or very late-night services.