For transits longer than 12 hours at Jeddah Airport, a transit visa is required, as some travelers mentioned being denied boarding without it. For shorter transits, no visa is needed if the passenger stays within the airport.

According to forum posts, transferring between terminals can involve security checks and shuttle bus rides. For instance, moving from Terminal 1 to the South Terminal took approximately two hours for one traveler, including waiting times for security checks and shuttle buses.

Travelers have called out that the airport's transit area, particularly in Terminal 1, has limited facilities. Some users reported a lack of duty-free shops and limited dining options, which could affect comfort during longer layovers.

For layovers near 12 hours, there was confusion among passengers regarding the necessity of a transit visa, with some being allowed to board without it and others not. It's advisable to confirm current visa requirements with the airline or official sources before traveling.

According to forum posts, taxis are readily available at night in Jeddah, including at the airport. Travelers have mentioned taking metered taxis with a typical fare from the airport to Al Hamraa being around 77-85 SAR. It's advised to carry cash as it's unclear if taxis accept credit cards.

Some travelers recommended using ride-sharing apps like Uber and Careem for better service and potentially lower costs. The KAIIAN app is noted for being cheaper than other services during non-rush hours, offering a fare of around 40 SAR from the airport during these times.

For those concerned about safety and convenience, forum users suggest pre-booking taxis, especially late at night. This ensures a smoother and possibly safer travel experience, as taxis directly from the airport can be negotiated or booked via apps like Uber or Careem.