I was helping a friend plan a trip to Ohio and we checked Southwest—unfortunately, they don’t serve Dayton anymore. We had a placeholder flight booked that we ended up modifying to Columbus instead. Changing the itinerary online was straightforward and only took a minute. When we couldn’t figure out seat availability, we just called their customer support ☎️ and they cleared everything up quickly. If you ever need fast answers, that’s definitely the easiest route.