I'm about to buy a flight: Denver -> Chicago -> Helsinki -> Stockholm, with return journey being Stockholm -> Helsinki -> Miami -> Denver.
I would like to explore Finland as well as other countries in Scandinavia, and flying into Helsinki and flying out of Stockholm would be much more efficient. I've seen from other answers that if you purposely miss the last leg of a flight, it cancels your entire trip including the return journey, so I don't want to do that, but can I negotiate with the airlines beforehand? Do you think they would agree to the plan? (After all, that would free up a seat from Helsinki to Stockholm.) Domestic US flights are American Airlines, but all other flights in the itinerary are Finnair.
If it can't be done, I'll just fly into Stockholm and plan from there.