The best airport terminals make traveling even more fun, while the worst airports can be your worst nightmare.To help us determine which airports to choose and the time for layover, every year, ‘Sleeping in Airports’ conducts a survey asking travelers to rate their airport experiences based on the services and facilities available within the terminal, cleanliness, customer service, comfort and their overall airport experience.This year, Jeddah King Abdulaziz International Airport, Saudi Arabia (JED), has been named as the worst airport in the world while the best one is Singapore Changi International Airport, Singapore (SIN).Here’s a look at the full list of the world’s worst airports:1. Jeddah King Abdulaziz International Airport, Saudi Arabia (JED)2. Juba International Airport, South Sudan (JUB)3. Port Harcourt International Airport, Nigeria (PHC)4. Tashkent International Airport, Uzbekistan (TAS)5. Santorini Thira National Airport, Greece (JTR)6. Chania International Airport, Greece (CHQ)7. Crete Heraklion International Airport, Greece (HER)8. Caracas Simón Bolívar International Airport, Venezuela (CCS)9. London Luton International Airport, England (LTN)10. Kathmandu Tribhuvan International Airport, Nepal (KTM)The best airports in the world are:1. Singapore Changi International Airport, Singapore (SIN)2. Seoul Incheon International Airport, South Korea (ICN)3. Tokyo Haneda International Airport, Japan (HND)4. Taipei Taoyuan International Airport, Taiwan (TPE)5. Munich International Airport, Germany (MUC)6. Osaka Kansai International Airport, Japan (KIX)7. Vancouver International Airport, Canada (YVR)8. Helsinki Airport, Finland (HEL)9. Tallinn International Airport, Estonia (TLL)10. Zurich Kloten International Airport, Switzerland (ZRH)Source: The Express Tribune