The company now expects revenue-per-available-seat mile to decline 3.1% in the first quarter, near the high end of its previous guidance range between a 1.5% decline and a 3.5% decline.
The company expects the price of jet fuel in the quarter to range between $2.05 and $2.06 per gallon.
In other news, JetBlue announced that it is starting a trans-Atlantic service, according to a report from CNBC.
The plans, which apparently have been in the works for the past three years, could come as soon as Wednesday, although the company did not confirm the timing.
News of the possible entry into the long-haul international market from the U.S. East Coast to Europe excited investors with the stock jumping nearly 3% in after-hours trading Tuesday following the CNBC report. Over the past year the stock has lost more than 15% of its value.
Part of the JetBlue offering likely would involve its business class service, named Mint, which features suites for some passengers as well as seats that go flat, the CNBC report stated.
"JetBlue extending service to Europe would be a benefit for budget travelers, especially since WOW Air ceased operations. We'll likely see fares decrease on other airlines that also fly these competitive routes, much like we've started to see on flights from the mainland U.S. to Hawaii since Southwest entered that field," Sara Rathner, NerdWallet's travel expert told TheStreet.
"Any time an airline adds routes, consumers win on pricing and flight availability. JetBlue's popular Mint premium service offers more luxurious travel for flyers who are willing to pay more for a higher-end experience or who've saved up a large amount of TrueBlue points."
JetBlue shares are up 2.17% Wednesday.