; and (2) the extent to which not having sufficient flight crews and aircraft available affects arrival and departure times. II Consumer protections 201. Protections relating to the imposition of fees that are not reasonable and proportional to the costs incurred (a) In general Not later than 270 days after the date of the enactment of this Act, the Secretary shall prescribe regulations— (1) prohibiting an air carrier from imposing fees described in subsection (b) that are unreasonable or disproportional to the costs incurred by the air carrier; and (2) establishing standards for assessing whether such fees are reasonable and proportional to the costs incurred by the air carrier. (b) Fees described The fees described in this subsection are— (1) any fee for a change or cancellation of a reservation for a flight in passenger air transportation; (2) any fee relating to checked baggage or carry-on baggage to be transported on a flight in passenger air transportation; (3) any fee relating to the choice or assignment of seats on a flight in passenger air transportation; and (4) any other fee imposed by an air carrier relating to a flight in passenger air transportation. (c) Considerations In establishing the standards required under subsection (a)(2), the Secretary shall consider— (1) with respect to a fee described in subsection (b)(1) imposed by an air carrier for a change or cancellation of a flight reservation— (A) any net benefit or cost to the air carrier from the change or cancellation, taking into consideration— (i) the ability of the air carrier to anticipate the expected average number of cancellations and changes and make reservations accordingly; (ii) the ability of the air carrier to fill a seat made available by a change or cancellation; (iii) any difference in the fare likely to be paid for a ticket sold to another passenger for a seat made available by the change or cancellation, as compared to the fare that was paid by the passenger for the seat for which the reservation was changed or canceled