There may be more trouble for the airlines. Some of the United States’ largest air carriers, including United Airlines, Delta Air Lines and American Airlines, have been accused of price conspiracy, according to a suit filed against the airlines from travel agents.

Some 41 travel agents have filed the lawsuit and claim their customers were negatively impacted.

Here’s what the Los Angeles Times has reported on this issue:

“The suit filed in U.S. District Court in San Francisco accuses United, American and Delta Air Lines of conspiring to close a loophole that allowed travelers to save money by combining multiple one-way tickets for the same trip.

By closing the loophole, United, American and Delta can force travelers to book a single, multi-city ticket for hundreds and even thousands of dollars more than if they booked several one-way tickets separately. All three airlines announced the changes in April.

The airlines acknowledged that they have closed the loophole, saying many one-way fares are promotional offers, intended to serve specific routes, not to be combined with other routes. Representatives for the carriers said they did not confer with each other to close the loophole.”

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