CHICAGO, Jan 30 (Reuters) - Pilots at JetBlue Airways Corp have overwhelmingly approved a two-year contract extension, their union said on Monday.

The Air Line Pilots Association (ALPA), which represents more than 4,600 pilots at JetBlue, said 75% of the pilots voted in favor of ratifying the agreement, which provides for a compensation increase of 21.5% over 18 months as well as other monetary improvements. (Reporting by Rajesh Kumar Singh)