Is it 100% the case that the RT is always the same price as booking the same outbound/return legs? I thought there were some RT fares that were discounted over the 2 one ways.
You can always check your flight, but in my experience, its 100 percent the same within the USA 48 at a minimum, on AA. Someone suggested other places that are in the 500 mile upgrade category would price the same, i.e. Puerto Vallarta, but I actually DID notice a $20-30 difference recently when comparing a RT to 2 one ways.