Airlines pull flight inventory from online travel agents in dispute over fees.
One of the country's largest airlines is butting heads with two of the biggest online travel agencies.
The escalating dispute is between American Airlines and online travel agents Orbitz and Expedia.
The fight has resulted in American pulling its flight inventory off Orbitz, and then Expedia eliminating American's flight line-up from its website.
Travel experts say that's going to mean more homework for the flying public.
"That's going to make it more difficult for consumers to comparison shop across different carriers, and they're going to have to go to additional websites to do that," explains AOL travel editor Beth Caulfield.
At issue are fees the online agencies get for each airline ticket sold.
American wants greater control of the way it sells tickets, including on its own website.
Meanwhile, another major carrier, Delta, has pulled its flights off three smaller online ticket outlets.
The online cancelations could have a ripple effect.
"One thing that I think will happen is that I think this will cause the other carriers to really look at their relationships with third party booking sites and evaluate them," Caulfield says.
Experts warn consumers to prepare for possible turbulence in efforts to find the best route at the best price.
Tickets on American Airlines purchased through Orbitz and Expedia are still valid for travel at the original fare, but travelers wanting to make changes to American flights booked on Orbitz now need to contact American Airlines directly.
Passengers wanting to change American flights booked on on Expedia need to contact Expedia customer support.