Yes is the short answer. Depends is the longer one. I have a trip booked, SEA-KOA, 7 nights at the Marriott Waikoloa and a full size car for $1400. The cheapest I can find the hotel alone is $1223.00, so figure the non stop flight and full size car cost me less than $200..... YMMV.

For me, I never find a package SEA-LAS cheaper than I can book separately, but I have very specific hotels there I like to stay in. Some of the higher end hotels have good package deals. Again, YMMV.