Allegiant's second quarter of 2026 was the first full quarter of a new corporate shape: the company closed its approximately $976 million acquisition of Sun Country Airlines on May 13, roughly four months after announcing the all-stock-and-cash deal, and the two airlines now run under one roof under Las Vegas-based Allegiant's stated ambition to be "the leading leisure airline in the United States." There are two ways to read the quarter's bottom line. The first reads as a loss: GAAP diluted earnings per share of negative $0.21 on a consolidated net loss of $4.9 million. The second reads far differently, because that loss is almost entirely an accounting artifact of the deal itself. Allegiant booked $66.0 million of special charges in the quarter - $55.2 million of it Sun Country acquisition and integration costs, plus $10.0 million of accelerated software amortization and a $3.7 million loss on extinguishing debt in the refinancing that funded the transaction. Strip those items, as management does, and adjusted diluted earnings per share were $2.19, up 78% from $1.23 a year earlier.
The operating numbers underneath are what deserve the attention. Consolidated adjusted operating income reached $87.1 million, a 9.2% margin; stand-alone Allegiant posted record second-quarter revenue of $776.2 million, up 16.1% year over year on 6.8% less capacity - an astonishing combination - while raising its unit revenue to a record 14.42 cents per available seat mile, up 24.6%. That margin strength arrived despite fuel that averaged $4.14 a gallon, 71% higher than the $2.42 a year earlier, on an unhedged fuel position. Management framed the quarter plainly: adjusted earnings "well above our guidance range," supported by roughly seven weeks of Sun Country contribution following the mid-May close, and the newly combined entity guided full-year 2026 adjusted earnings per share to more than $6.00.
Then there is the price action, which needs its own reading. The stock touched a 52-week high of $123.63 in early July on the closing momentum, then sold off roughly 15% in the sessions after the August 4 print - to about $89 by mid-August - even though the company beat its own guidance and raised the full-year number. The market was sizing two things: a Q3 guidance that calls for a small adjusted loss, and a year engineered so that nearly the entire second half profits arrive in the seasonally strongest fourth quarter. The thesis, in one line, is that the stated GAAP loss was the transaction bill and the real story is a bigger, more cost-disciplined airline - but the stock now trades for that risk, not for the headline on earnings day.