Get an aisle seat. If you travel by coach or taking a flight, make sure you get an aisle seat. With an aisle seat you don’t have to worry about disturbing anyone.
Have plenty of stops if travelling by car. Make sure you stop regularly to walk around and stretch.
Stretch regularly. This relives pressure in your sciatic nerve and promote blood flow and reduce the pain.
If its a long journey try and shorten it by going to sleep in a hotel and continue the journey the following day.