The Transportation Department indicated on Wednesday that it intended to be more hostile in forcing airlines to address common traveler frustrations, proposing a wide range of consumer protections.

They come on top of earlier rules limiting how much time passengers can sit on planes on the tarmac. The proposed rules would, among other things, raise compensation for passengers denied boarding on oversold flights, allow customers to get a full refund within 24 hours of buying an airline ticket and require reimbursement of baggage fees and expenses when luggage is not delivered on time.

They would also require the airlines to more hastily inform travelers about flight delays and cancellations and ban airlines and ticket agents from advertising prices that are not the full fare specifically mandating clearer disclosure in advertisements for "one-way" fares that can only be acquired as part of a round-trip ticket.

Taken together, the proposals, which are expected to take effect in the fall, are the Obama administration's counter to intensifying annoyance about airline delays, proliferating fees, shady advertising practices and the general lack of responsiveness by carriers to customer complaints.

Legislation to deal with some of these issues remains stalled in Congress, and previous administrations generally relied on the airlines to address these problems themselves.

Ray LaHood, the Transportation Secretary, said at a news briefing, "All of these rules come about as a result of complaints that we've heard from the flying public. These are the things that people get irritated about".