Flight
Salt Lake City (SLC) is the closest area to the Bonneville Salt Flats, the salt flats are about an hour drive from SLC. The flights are around $200 right now starting from 10/20/21 and I have found the cheapest flights through Delta!
Rental Car
This is the cheapest car rental service I have found!
Hotel
We have booked our Airbnb, and will be staying just south of the Downtown SLC area! There are plenty of beautiful Airbnb's and hotels that are reasonably priced around us! I recommend staying as close to Downtown SLC as possible.