For me travelling on a Sunday morning at 6:15AM took almost 40 minutes from Old Quarter with light traffic 2 days ago. Got there plenty of time to get boarding ticket, representative of VietjetAir Air actually ask people in queqe who has a flight within 45 minute window to head to the front. There I am in line and seeing the late arrival moved ahead I felt inconvenient since my flight is 2 hours later.