Judging by Delta’s circuitously confusing answer it sure sounds like it. From Brian Beutler:

[Delta employees] are encouraged to participate in a fly-in to Washington, D.C., to lobby their congressmen, for which “positive space travel” — free travel for airline employees — is permitted.

A Delta spokesperson said No Way AFA operates separately from the company itself, but that the company “allow[s] employees to travel positive space to D.C. when supporting legislative efforts that the company supports.”

By contrast, Delta policy requires employees to fly standby for leisure and personal travel, suggesting that the “positive space” standard for the fly-in could squeeze out seating space for regular travelers.

The spokesperson says Delta avoids such displacement. “[W]e manage employee travel to avoid displacing revenue customers. We block such travel where limited seats are available and displace ourselves for revenue customers whenever necessary.”