Market Alerts queries will return no results for the following reasons:
- There have been no flight schedule changes between the latest data update and the previous day's update.
- The system has insufficient resources to run the query. This typically happens for multiple airport and / or airline selections. We do plan to increase the system capacity to handle larger queries, however, in the interim, we recommend that queries are limited to 50 airports and / or airlines.
Schedules are updated daily except on Sundays and on US holidays.