I’m a big fan of taking the train when travelling and for a recent trip to Portugal we went by rail from the UK. There are so many advantages to not flying, not least that you get to see more and visit many places in one journey. There is less stress, hassle and security theatre, and it’s also better for the planet and the stability of our future.
Although some airlines such as easyJet are starting to offset all fuel you may wish to consider pledging to go flight free in 2020. In Europe you can easily travel by train and it’s often a better experience too.