On route / en route?

[joshandjamie]

If you saying that we're on route somewhere, do you use on or en? I thought it was a French saying so have always written it en but have recently seen it written as on route. Help please pedants

En route is correct for the reason you give. :)

En route

En route and it drives me nuts!

thank you. I feel vindicated.

En. Tis French.

En route! I have never seen "on route" before.

en route sans doubt!