- Air traffic between Europe and North America. Most flights follow routes requested by pilots and airlines, based on the most favorable upper-level winds. Therefore, flight routes and traffic volumes can vary from day to day.
- Air traffic between the Middle East and North America.
- Air traffic between North America and the Far East.
- International flights from Iceland to Europe and North America.
- Domestic air traffic and traffic between Iceland, Greenland, and the Faroe Islands.
The largest traffic flow segment is between Europe and North America. Daytime traffic consists of flights from Europe to the United States, with opposite traffic at night-time. This creates two main peak periods for the Reykjavik Area Control Center at around 14:00 and 04:00 hrs.