Next week we'll arrive in Luton by plane and need to get to London (somewhere in Brent).
We'd like to take the bus (since it is the cheapest as far as I can tell) from Luton to London (either Golders Green station or Finchley Road & Frognal) in order to get to our accommodation.
The problem is that when I try to make the reservation, there are concrete departure times noted in the summary. Will we be able to board a later bus if the landing in Luton is delayed? Will we be able to board an earlier bus (for the return trip) if we feel traffic is going to be a problem?
If the answer is no, then I saw that one can purchase tickets on the spot in the airport. Will they be more expensive? Where can I purchase them "on the spot" for the return trip, the driver, ticket machines in Golders Green/Finchley Road station)?
Later edit: Forgot to ask about Green Line, their tickets seem a bit more expensive, but do not have set departure times. What is inconvenient here is that the only timetable I found was a hot mess. Is there a Green Line bus every 30 minutes?