Bath Spa station is a 15 minute walk or a short taxi ride away.
Bristol Airport is approximately 30-40 minutes drive away. There is a regular bus service between the airport and central Bath or taxis can be arranged easily.
Heathrow Airport is easily reached by train or coach and is around 1hr 45 mins drive away.
Central London is 1hr 30mins away by the train (the service is frequent and regular) and is easily reached by car.
A car is not needed once you arrive in Bath.