Updated from 11:21 a.m. EDT

JetBlue Airways

(JBLU) - Get Report

bucked industry trends and turned a profit in its first quarter but investors who have bid up the stock frantically since its initial offering were apparently looking for more.

At a time when the major airlines are gushing losses, JetBlue earned $13 million, or 34 cents a share, in the first quarter, compared with $6.7 million, or 21 cents a share, a year ago. Good thing, too, since given its $1.8 billion market cap, the carrier is already bigger than several of the established airlines that are awash in red ink.

By comparison,

UAL

(UAL) - Get Report

, the parent of United Airlines, has an equity market value of $803.3 million, while

Continental Airlines

(CAL) - Get Report

-- which spun off its own regional carrier,

ExpressJet

(XJT)

, in an initial public offering last week -- has a market cap of $1.7 billion.

UAL, which is the second-biggest airline in terms of revenue, lost $510 million in the first quarter, while the fifth-largest carrier, Continental Airlines, had a loss of $166 million. Both airlines have been blighted by slow traffic and excess capacity following the terrorist attacks on Sept. 11.

Peer Review

In fact, the only major carrier to post a first-quarter profit was

Southwest Airlines

(LUV) - Get Report

, a regional airliner with a $13.8 billion market cap.

Like Southwest, JetBlue offers low fares in underserved markets in metropolitan areas with high average fares. Over its two-year existence, the upstart has been touted as the next Southwest. Like its low-cost peer, JetBlue operates a single fleet of airplanes, in order to keep its equipment expenses down. JetBlue's first quarter operating expenses were $110 million, compared with $4 billion at UAL and $2.2 billion at Continental. Southwest had total costs of $1.2 billion in the first quarter.

Not Many Profits
JetBlue and Southwest buck the trend of big quarterly losses

At the same time, JetBlue said that its load factor, or the percentage of seats filled in its planes, rose to an all-time high of 80.8%, versus load factors of 72.2% at UAL and 74% at Continental.

Also benefiting JetBlue is the fact that it employs a non-union workforce. In the first quarter, employment-related costs were 31% of the startup's total revenue, compared to 48% at UAL, whose financial recovery in the first quarter was hurt by complications with negotiating open labor contracts.

Pricey

At mid-afternoon Thursday, JetBlue was trading off $1.11, or 2.43%, at $44.60. The company still trades at about 50 times projected 2002 earnings, compared to the S&P 500, which is trading at approximately 22 times this year's earnings.

On April 12, JetBlue made its debut with great fanfare, rising 67% on its first day of trading.

JetBlue's revenue grew 109% to $133.4 million in the first quarter from $63.9 million a year ago. In the first quarter, JetBlue said it improved its operating margin to 17.5% from 11.8% a year ago.

The carrier said that it expects to record a lower operating margin in the second quarter, however, as the seasonal effects of Passover and Easter boosted traffic over the first quarter.