Why are there less routes in the Airline Performance Report compared to the T-100 report?

The Airline Performance Report has a threshold to show performance data for anything over 11 deps/month. You could use the O&D Segment report to get a sense of Seg Fare for those markets missing in the Airline Performance Report.

One work around here would be to pull T-100 and O&D reports for that route in question. You’d still have to manually calculate Seg fare by using the square root of miles proration method for connecting pax fares, but it can be done.