JetBlue boosts offer to buy Spirit Airlines By: MarketWatch June 21, 2022 at 00:55 AM EDT JetBlue on Monday increased its offer to $33.50 in cash per Spirit share. Previously, it had offered $31.50 per share. Read More >> Related Stocks: Frontier Group Holdings, Inc. - Common Stock JetBlue Airways Corporation - Common Stock Spirit Airlines, Inc. Common Stock