First flight in two years is booked and I need to sort my train to the airport. If the flight is at 12pm how early would you aim to arrive? Medium haul to a county which will be questioning most passengers ahead of boarding in my previous experience so I want to get there earlier rather than later. Will book a lounge so will have somewhere nice to relax. Trains currently available will get me there three hours or four hours ahead of my flight. Which would you go for?