Entry to the Arches National Park in 2024 will be by advance reservation only (unless you have secured a spot in the parks’ campground). Due to the expected demand, it is advised to reserve the second (literally the second) that the reservation window opens. The reservations costs 2 dollars per vehicle, in addition to the entrance fee to the park which costs 35 dollars per vehicle per week and which can be purchased at the entrance station.
to reservation: https://www.recreation.gov/timed-entry/10088426
see here information on the opening dates of the booking windows – in groups of one month, 3 months in advance:
