Upvote:1
Saying that your car would depart at 9:00, your ride would take 35-45 minutes. You would arrive at 9:45.
Upvote:4
I considered editing Joren's answer but it gets complicated so let me expand on it in a separate answer.
You can use Google Maps to estimate, here's what you need to enter:
And you are going to Gatwick Airport Gatwick Airport Station, Gatwick Airport, Horley, Crawley RH6 0RD, UK
While T2 and T3 are very close neither T4 nor T5 is.