Analysts say a big test for airlines will come after the Labor Day holiday in September

Spiking costs mean the money has to come from somewhere.

Delta is the first of the U.S. airlines to report second-quarter results.

Delta Air Lines topped estimates for Q2 results Friday, driven by strong demand. Higher airfares will remain, but fuel expenses should be manageable.

Air fares aren’t coming down, Delta Air Lines said Friday, even though the cost of jet fuel has fallen sharply.

Analysts say a big test for airlines will come after the Labor Day holiday in September

Delta Air Lines beats Q2 earnings and revenue estimates, affirms full-year guidance, but shares slip on record fuel costs.

By Tomi Kilgore and Claudia Assis