From Brighton, reach Gatwick with frequent Southern or Thameslink trains in around 30 minutes

https://donovanmakt281.tearosediner.net/gatwick-express-timetables-fares-and-when-it-s-worth-it-2

From Brighton, reach Gatwick with frequent Southern or Thameslink trains in around 30 minutes. Trains are direct, making it an easy option for early flights from the coast.