Quickest 7h 35min
There are 1 train company operating 2 routes - Empire Builder, Southwest Chief, 2 flights from DDG to SPK. The cheapest train costs $393 and is 2d 1h 17min.
Faretrotter is a travel aggregation resource that gathers travel company amenities and statistics and compares modes of transportation between cities. Use Faretrotter to plan your next trip, or purchase a ticket your next city.
There are 3 ways to travel from DDG to SPK. 4 trains, 2 flights and 1 by car are possible between the two areas. The by car from DDG to SPK is the cheapest. The flight from LBL to GEG is the fastest. The train operated by Amtrak running from DDG to SPK is the most convenient.
It's important to check each mode when booking your ticket so that you can find the best method for you. The cost of each type varies differently, so be sure to use Faretrotter to keep an eye out!