Group 1 - Hainan Airlines announced a service upgrade plan for its Haikou-Beijing round-trip flights starting from August 1, allowing passengers without checked luggage to arrive at the boarding gate just 15 minutes before departure [1] - The airline introduced a flexible ticket change policy, allowing passengers who purchased specific fare classes to change their flights without fees or fare differences up to 4 hours before departure [1] - For passengers with checked luggage, the standard check-in deadlines remain in effect, with Haikou Meilan Airport requiring check-in 35 minutes before departure and Beijing Capital Airport requiring 40 minutes [1]

Group 1 - Hainan Airlines announced a service upgrade plan for its Haikou-Beijing round-trip flights, effective from August 1, allowing passengers without checked luggage to arrive at the boarding gate just 15 minutes before departure [1] - The airline introduced a flexible ticket change policy, allowing passengers who purchased specific fare classes to change their flights without fees or fare differences up to 4 hours before departure [3] - Passengers with checked luggage are still required to adhere to the standard baggage check-in deadlines, which are 35 minutes before departure at Haikou Meilan Airport and 40 minutes at Beijing Capital Airport [3][4] Group 2 - Special assistance passengers, including those with disabilities, elderly travelers, and unaccompanied minors, are advised to arrive at the airport well in advance to complete their check-in procedures [4]