This rulemaking would amend DOT's aviation consumer protection regulations to ensure that consumers have ancillary fee information, including "baggage fees," "change fees," "cancellation fees," and seat fees that impact families traveling with children at the time of ticket purchase. This rulemaking would also examine whether fees for certain ancillary services should be disclosed at the first point in a search process where a fare is listed. This rulemaking implements section 5, paragraph (m)(i)(F) of Executive Order 14036 on Promoting Competition in the American Economy, which directs the Department to better protect consumers and improve competition.