Multiple aircraft to 1 route?

[=(cXn)= SiX]

I can't find the option, is it possible?

[RdM_BlackDevil]

Yes, this is possible. Just buy other plane and send to the same route by using research option

[YouShallNotKill]

Dont forget to check daily numbers for 1 route. In status, when you chose a airplane, you can see seat capacity and today demands. I made a research, that the maximum income is for full first class seats, but numbers of these passangers are limited