CORRECTED - WRAPUP 2-Delta, US Airways results hampered by economy

* Delta, US Air post net losses

* Industry groping through uncertain economic recovery

* Question mark over return of business travelers

* Low-cost carriers turn profits

* Most shares down (Corrects misspelled name is paragraphs 7-8) (Updates with conference calls, Delta integration timetable)

By Kyle Peterson

CHICAGO, Oct 22 (Reuters) - Signs of recovery are popping up in many corners of the U.S. economy, but the bosses of major airlines are still reaching for that rainbow.

Quarterly results reported by Delta Air Lines Inc (DAL.N) and US Airways Group Inc (LCC.N) on Thursday underscored their plight, which is characterized by weak revenue caused mainly by sagging demand for high-end business travel.

The figures from Delta and US Airways, which sent their shares lower, were consistent with those reported this week by big rivals.