Spirit Airlines (Nasdaq: SAVE) reported earnings on April 30. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended March 31 (Q1), Spirit Airlines met expectations on revenues and beat expectations on earnings per share.

Compared to the prior-year quarter, revenue grew significantly. Non-GAAP earnings per share grew significantly. GAAP earnings per share increased significantly.

Margins grew across the board.

Revenue details
 Spirit Airlines logged revenue of $370.4 million. The six analysts polled by S&P Capital IQ foresaw sales of $367.6 million on the same basis. GAAP reported sales were 23% higher than the prior-year quarter's $301.5 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at $0.45. The 10 earnings estimates compiled by S&P Capital IQ anticipated $0.42 per share. Non-GAAP EPS of $0.45 for Q1 were 36% higher than the prior-year quarter's $0.33 per share. GAAP EPS of $0.42 for Q1 were 31% higher than the prior-year quarter's $0.32 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 45.3%, much better than the prior-year quarter. Operating margin was 13.5%, 100 basis points better than the prior-year quarter. Net margin was 8.2%, 40 basis points better than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $415.5 million. On the bottom line, the average EPS estimate is $0.60.

Next year's average estimate for revenue is $1.61 billion. The average EPS estimate is $2.01.

Investor sentiment
 The stock has a two-star rating (out of five) at Motley Fool CAPS, with 81 members out of 99 rating the stock outperform, and 18 members rating it underperform. Among 27 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 22 give Spirit Airlines a green thumbs-up, and five give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Spirit Airlines is outperform, with an average price target of $28.75.

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