The government announced a new set of passenger protections on Wednesday aimed primarily at travelers’ growing frustration over airline fees.

Although the rules do not set limits on how much carriers can charge for items like bags, ticket changes and seats, they do require airlines to more clearly disclose these and other fees in advertisements and on their Web sites. Ads will have to cite the full price, including government taxes that now are often relegated to the fine print.

Other provisions increase the compensation carriers must pay passengers who are involuntarily bumped from flights (from up to $800 to as much as $1,300 for the longest delays). They also require the airlines to refund checked baggage fees if luggage is lost, and require airlines to promptly notify customers of delays over 30 minutes. The provisions impose a four-hour limit on time spent on the tarmac for delayed international flights, expanding a policy that has been in place for domestic flights for a year.

The Department of Transportation proposed these and other passenger protections last June, soliciting public comment on the ideas, and ultimately adopted most of the rules under consideration, despite objections raised by the airlines.