American, Northwest raise fares

American and Northwest Airlines raised their U.S. fares yesterday to help cope with record jet-fuel prices, after increases Thursday by four other carriers.

American increased prices $5 each way on most routes, a spokesman said. Northwest implemented a similar increase, as did low-cost carrier JetBlue Airways Corp. on some routes. Delta, United, Continental and US Airways raised fares a day earlier.

Delta and Northwest both have said they may be forced to file for bankruptcy protection if they aren’t able to further reduced costs. US Airways, United and ATA Airlines are operating in bankruptcy.

Baltimore Sun