Delta jumps on quarterly earnings beat

Shares of Delta Air Lines DAL.N surge 12.8% to $74 premarket

DAL's Q1 adjusted EPS of $0.64 tops analysts' average estimate of $0.57

Legacy U.S carrier expects Q2 EPS between $1 and $1.5, the midpoint of which is below analysts' expectation of $1.41

DAL sees Q2 revenue growing in the low-teens percentage range and forecasts operating margin at 6%-8%

DAL up most among U.S. airline stocks, which have gained after the U.S. and Iran agreed to a two-week ceasefire, pushing crude prices down

DAL rival United Airlines UAL.O up 11.3%, while Southwest Airlines LUV.N rises 9%

Of 27 analysts tracking DAL, 25 rate it "buy" or higher and two rate it "hold" - data compiled by LSEG

DAL shares have fallen 5.5% so far this year, the least among major U.S. carriers