This is one of the best and simple bus booking plugin in WordPress directory, Its used Woocommerce for making payment so Its freedom to use any payment gateway via WooCommerce.
Demo: https://mage-people.com/product/addon-bus-ticket-booking-with-seat-reservation-pro/
Embark on a seamless travel experience with ProZigzagBus, the ultimate online multi-vendor bus ticket booking app and reservation system powered by Flutter.
Demo: https://codecanyon.net/item/prozigzagbus-online-multi-vendor-bus-ticket-booking-app-reservation-system-flutter-solution/50309193
SBurK is a comprehensive SaaS school bus tracker system for managing the daily school bus operation that links the school, the parents and the buses into one powerful system.
Demo: https://codecanyon.net/item/sburk-school-bus-tracker-two-android-apps-backend-admin-panels-saas/25026826
The excellent plugin allows managing the seat reservation system for bus ticket booking with WooCommerce.
Demo: https://codecanyon.net/item/bus-ticket-booking-with-seat-reservation-for-woocommerce/22444052
Bus365 : Bus Reservation System with Website is a very wonderful Bus and fleet Booking System,
Demo: https://codecanyon.net/item/bus365-bus-reservation-system-with-website/20891350
ViserBus, a professional Bus Booking Solution that comes with PHP Laravel. It’s developed for those people who want to start their Bus business website.
Demo: https://codecanyon.net/item/viserbus-bus-ticket-booking-system/36360818
Hands down to one of the coolest and most convenient buses booking Android app UI template.
Demo: https://codecanyon.net/item/qibus-bus-booking-android-app-ui-template/24164028