WASHINGTON — Travelers may soon be able to get refunds for delayed baggage, more accurate information about on-time performance of the airlines they fly, and more transparency when booking tickets with online travel services, under executive actions announced Wednesday by the Obama administration.

‘‘Airline passengers deserve to have access to clear and complete information about the airlines they choose to fly and to expect fair and reasonable treatment when they fly,’’ Transportation Secretary Anthony Foxx said in making the announcement. ‘‘The actions we’re taking today and in the coming months will expand aviation consumer protections we have previously enacted.

‘‘These actions will enable passengers to make well-informed decisions when arranging travel, ensure that airlines treat consumers fairly, and give consumers a voice in how airlines are regulated,’’ Foxx said.

Foxx said the announcement builds on previous efforts to promote competition and protect consumers at a time when mergers mean they have fewer choices when it comes to flying.

But Nicholas Calio, president and chief executive of Airlines for America, an industry trade group, said the public should be cautious about new efforts to ‘‘re-regulate’’ the industry.

‘‘It would be difficult to find an industry that is more transparent than the airline industry; customers always know exactly what they are paying for before they buy,’’ Calio said. ‘‘Further, the fact that a record number of people are flying underscores that customers are benefiting every day from affordable fares and the ability to choose among carriers, amenities, and service options that best meet their needs.’’

Foxx said the administration already requires airlines to refund bag fees when luggage is lost, but he said officials soon hope to add a requirement that airlines refund fees when luggage is substantially delayed. Officials offered no details on how ‘‘substantially’’ would be defined, and there is no specific timeline for when the rule would go into effect.

Congress included a similar provision for lost or mishandled luggage in its funding extension for the Federal Aviation Administration approved over the summer. The provision says passengers would be eligible for refunds if bags are delivered 12 to 18 hours after the scheduled arrival of a domestic flight or 15 to 30 hours after an international flight.

Under the administration’s rules, airlines must also change the way they report the number of bags that are mishandled or lost. Instead of tallying the number of lost baggage reports and comparing those numbers to the overall number of travelers, they now will have to compare the number of mishandled bags to the total number of checked bags. Those changes will likely go into effect in January 2018.

The rules also include new protections for travelers who purchase tickets from online booking services. Foxx said consumers may not be aware that some listings may be biased in favor of certain airlines. Online sites would have to be neutral or disclose any bias in their offerings. That requirement could go into effect by the end of the year.

Airlines also will have to revamp the way they report on-time performance by including flights operated by smaller regional carriers that are part of their networks.

And, for the first time, airlines will be required to report the number of wheelchairs they mishandle. This rule change also would go into effect in 2018.