Calendar of Slot Activities
The IATA Calendar of Slot Activities lists all key deadlines and scheduling events for each season. Follow the link below to access the official IATA calendar.
IATA Calendar of Coordination Activities (PDF)↗Key Events for Reference
- Schedules Conference (ISC): Held twice a year (summer and winter). Airlines submit initial schedules.
- Schedules Optimisation Meeting (SOM): Mid-season follow-up for Winter scheduling.
- Initial submission deadline: Varies by season — refer to IATA calendar for exact dates.
- Season start: Summer season typically starts late March; Winter season starts late October.
For questions about specific deadlines, contact the relevant coordinator.