Draw the journey all the way to the door
Start with your actual terminal and the accommodation entrance, not two city names. A train may make excellent progress into a major station but leave you with a second train, an escalator and a walk across uneven streets. A slower airport bus that stops beside your hotel could be the simpler trip. At Heathrow, the airport lists several rail choices; their different city stops matter as much as their running times.
Make three short route descriptions: where you board, where you change and where you get off. Add the time between the airport vehicle and the hotel. If one option has a complicated interchange, look at the station layout before treating the connection as effortless.
Compare people, bags and waiting
Train and bus fares are usually quoted per passenger, while a taxi quote may cover the vehicle. Compare your entire party rather than one fare. Then check luggage capacity, child-seat arrangements where relevant, wheelchair access and any reservation requirements. A small car is not automatically suitable for four adults with large cases.
Frequency also changes the calculation. A service that runs quickly but leaves just before you reach its platform may lose its advantage over another option. Do not build a fixed airport pickup around the published landing time alone: arrival formalities and baggage collection can vary.
Choose a primary route and a fallback
Use the airport's official ground-transport pages to identify legitimate pickup points and current service hours. For a booked car, establish how the driver handles delays, where you meet and whether waiting or parking is included. For public transport, check the final departure that still connects to the next part of your journey.
Save the preferred route and one alternative before flying. The fallback should genuinely work later or under different conditions, not be another train on the same disrupted line. You might favor the train for an afternoon arrival but keep the official taxi rank location for a delayed evening flight. Having that decision ready prevents a tired comparison beside the baggage carousel.
