Trying to plan the best route to get from London City to Heathrow. Train, tube, taxi, or private driver? Also if taking a taxi it will be pricy but any ideas how expensive? One last question - how bad are the checkin and security lines at Terminal 3 LHR at 6:00 am on a Tuesday? Had planned to fly out of CDG but COVID derailed tour plans and have to go home via LHR.
Thanks for any assistance.