KONTAN.CO.ID - WASHINGTON, April 6 (Reuters) - JetBlue Airways said Tuesday it made an unsolicited $3.6 billion bid for Spirit Airlines, potentially snarling merger plans between the ultra-low-cost carrier and Frontier Group Holdings. 

JetBlue Chief Executive Officer Robin Hayes said the deal would make the New York-based airline a stronger competitor to the so-called four legacy U.S. airlines that control nearly 80% of the U.S. passenger market.

"The number one complaint we get is why don't you fly to more places," Hayes said in a Reuters interview late Tuesday. "What we want to do is create a bigger JetBlue" that can serve more consumers.