Some airports make it exceptionally easy to get work done whilst waiting for your flight. Unfortunately, none of them are in the US — although some of the least work-friendly airports are.

Forbes reports that conference call provider PowWowNow ranked the productivity environment at the world’s 50 busiest airports, using such metrics as availability of free wifi, airport lounges, and overall quality of service.

Tokyo Narita International Airport and Thailand’s Suvarnabhumi International Airport finished at the top of the list, both scoring 7.4 on the ten-point scale used by PowWowNow.

Others in the top ten included Sheremetyevo International Airport in Moscow, Singapore Changi Airport, Taiwan Taoyuan International Airport, Leonardo DaVinci-Fiumicino Airport in Rome, Tokyo Haneda Airport, London Heathrow Airport, Hong Kong International Airport, and Seoul Incheon International Airport.

Hartsfield-Jackson Atlanta International Airport fared the worst on the study, earning a 5.4 score, with reviewers noting that the world’s busiest airport has just 15 lounges (compared to 44 at Heathrow, for example) to serve its 103.9 million annual travellers.

Other airports deemed particularly unfriendly to conducting business included London Gatwick Airport, Newark Liberty International Airport, O’Hare International Airport in Chicago, Barcelona-El Prat Airport, Orlando International Airport, Denver International Airport, Toronto Pearson International Airport, Amsterdam Airport Schiphol, And Chhatrapati Shivaji International Airport in Mumbai.