Air America's programming was dropped from stations in Chicago and Los Angeles last week but had been restored on WNTD-AM, Chicago, under a New York judge's restraining order. The network remains off the air on KBLA, Los Angeles, the nation's second-largest media market.
Air America says it will cease broadcasting on WNTD April 30, losing a potential 7.5 million listeners. The Chicago Tribune says the network is seeking a deal with another radio station before it signs off.
Multicultural News Radio owner Arthur Liu said Air American bounced a check and owes him more than $1 million in rental fees.
Air America accused MNR of reselling previously purchased airtime in Los Angeles.
The two-and-a-half-week-old talk network is on the air in New York and eight other markets and is available on Sirius and XM satellite radio.