How to rewrite rules with nginx regular expressions

How to rewrite rules with nginx regular expressions

using nginx( version >1 ) rewrite I would like to rewrite
www.domain.com/local/airports/jfk-2/ as www.domain.com/local/airports/jfk/
There are too many locations like above.
I tried below without luck rewrite ^/local/airports/(.*)/
/local/airports/$1-2/ permanent;
What is the best way to get this work? Thanks