Select smallest value from a list by categories

I have a process in which I'm trying to determine which is the shortest ship transit time from one location versus another.

For example if I'm shipping a package to first 3 digits of zip from zipcode 38133 it is 3 days but if shipping from zipcode 02189 it is 1 day I would want to select the transit day for 02189 at 1 day. For this example I have a table (have attached an example of the rows and values and I want to first select the transit days from the origin to the zip3 and then compare to all the origin transit days to the same zip3 and return the fastest (smallest vale).

Zip3      DestinationState      Zone      TransitDays      TransitType      OriginZip      Carrier
011      MA      2      1      FXG      02189      FedEx
011      MA      6      3      FXG      38133      FedEx
011      MA      8      5      FXG      97214      FedEx
011      MA      8      5      FXG      98108      FedEx

in the above the origin is 38133 with a transit of 3 and i'd want to compare to the resulting 02189 with 1 the shortest transit days.
Book2.xlsx