Published: Jan 02, 2011 2:31 AM EST
Updated: Jan 01, 2011 11:31 PM EST

NEW YORK (AP) - The dispute between American Airlines and travel websites is escalating.
      
Expedia has stopped selling tickets on American Airlines flights. The airline says people who want to compare flights or fares should visit other travel sites.
      
American has said it wants to sell more tickets through its own website. Paying to have its flights listed on sites like Expedia can be costly, since airlines pay a commission every time people search a particular flight, look up a fare or book a trip.
      
Last month, American pulled its flights from the travel website Orbitz. It said consumers could just as easily buy tickets from American's website, and the airline wouldn't have to pay as much.       

And in an apparent response to that, Expedia last week made American flights more difficult to find on its website.
      
Experts have warned that while American might save money in commission fees, its sales will drop if its flights don't appear on the travel sites.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)