AIRLINES

Fares to Europe Cut: Delta Air Lines said it lowered the round-trip fares from the United States by as much as 30%, sparking a round of cuts from other airlines. Delta said the fares are for travel between Sept. 17 and Dec. 10 to most spots in Europe. Tickets must be purchased by Aug. 18, Delta said, and within one day of the reservation confirmation. An American Airlines spokesman said the carrier announced its cuts in newspaper ads Thursday but put out no news release. USAir said it will cut its round-trip fares to Frankfurt, Paris and the Caribbean. Trans World Airlines and Northwest Airlines, along with partner KLM Royal Dutch Airlines, also announced cuts.