Making a Booking | Flights - Frequently Asked Questions

Below you can find all the frequently asked questions on this topic.
How to check your luggage allowance and that your luggage has been booked on the airline's website?
Can I add my airline membership number to the booking?
Will a layover give me enough time to get to the next flight?
What types of cabin bags can I bring?
What is my luggage allowance?
Is luggage included in the package price?