1. Short title This Act may be cited as the Justification and Examination of Transportation Staff's Executive Travel Costs Act of 2023 or the JETSET Costs Act of 2023 . 2. Executive travel on Department of Transportation aircraft (a) In general Unless the Secretary determines that the cost of a flight to a destination on aircraft owned, operated, or maintained by the Department of Transportation is at least 5 percent less than the cost of a flight on a commercial airline to the destination, neither the Secretary nor the Secretary's executive staff shall travel to such destination on any aircraft owned, operated, or maintained by the Department of Transportation. (b) Exception Subsection (a) shall not apply in any case in which emergency travel is required and commercial service is unavailable after notifying the Inspector General of the Department of Transportation and the appropriate committees of Congress in writing not later than 7 days after such emergency travel is completed. (c) Cost comparison Not later than 180 days after the date of enactment of this section, the Administrator shall revise Order 2500.36N to reflect the true cost of flight operations. When calculating per-seat costs of a flight, the Department of Transportation— (1) shall be prohibited from charging different rates to non-Department of Transportation officials