L.S.
I have travelled a lot with my almost 5-year old and my 1-year old. I have never taken their infant base with me. The weight of it alone makes that nearly impossible. As long as you get the seatbelts tight, your infact seat is still safe even without the base. Also, when we travelled to visit family we were using cars that were made the year before the latch system was required, so our bases would not even work with those cars. Be sure to know if the car you are going to use at your destination can use your base. If you plan to travel a lot, you definitely want a bag for your seat. Buy a bag that will fit a convertible car seat and it should work fine for your infant seat, but it will still work for the next carseat you get, which you will have for a lot longer than your infant seat. Good luck!