You can reach the Canal du Midi by taking a flight to Toulouse airport. From there, you can take a taxi or a train to your starting point. To explore the canal, you can take a boat ride or ride a bicycle. Additionally, public transportation is available in most of the towns you will visit during the trip.
Estimated travel costs: flight (varies), taxi/train (£40-£60 per person), boat rental (varies), bicycle rental (£20 per day)
If you have more time, consider exploring more towns along the Canal du Midi, such as Marseillan or Homps. If you have less time, you can skip a town or two and spend more time enjoying the canal. It's also important to pack comfortable clothes and walking shoes, as well as sunscreen and a hat for protection against the sun. Don't forget to try the delicious local cuisine and wines!