Help! Folding bike or mtb

[Abzy]

I'm not sure what type of bike to buy I currently have less space I've been looking at the btwin 900 also scott mtb also I'm thinking to travel with the bike I will use it maybe 6-7 times a month they both are similar prices also I'm thinking to put the bike in a bike box and store in my room has anyone experienced flying with mtb ?

 

[Laffin ebike]

If you want a folding bike the Carrera Crosscity is ace, It's halfords, but don't use them for servicing !