Riyadh King Khalid International Airport ( RUH)
website : https://www.riyadh-airport.com/
If you leave the country, some information.
It is about 35 minutes drive from the center.
Check in counter Lufthansa is open 3 hours before departure and is located in terminal 1, one of the terminals for international flights.
I had a night flight ( 1.05 am ) and the passport control went smoothly. They ask to rate the service with an emoticon smiley.
After the control, you need to pass the security control. At that point, women and men have a separate line. I didn’t know that and followed the people ( men ) before me. So I missed the women security, it is somewhere at the left when you passed the passport control and protected by a curtain. But no worries, they brought me kindly to the right place.
The business lounge ‘Plaza Premium Lounge’ is located on your right after security control and again on your right at gate 18 on the mezzanine or first floor and open 24 hours. You can take the elevator or escalator. It is an international lounge used by a lot of Airlines. Info : https://www.plaza-network.com/location_detail?city=Riyadh
Restroom for the ladies is in the same area on the ground floor, at the left side of the elevator.
For boarding, you have 2 entries : business and economy, a line on the ground shows it .
Very strange, but once boarded, SA people control again your hand luggage, bags on liquids/beverages? Woman and men are controlled separately.
People are very friendly and helpful in the airport. As soon if they see that you look for something, they ask if they can help.