Funny enough, Belize was one of the first international trips I planned by myself, and yes—Southwest does fly there seasonally. When I booked, I wasn’t confident because the dates kept shifting on the website. I finally gave up refreshing and called 844-734-0813 — the best way to instantly book, cancel, or modify flights.
The agent pulled up the exact seasonal schedule and walked me through the days flights actually operated. They even helped me use my credit from a canceled trip the year before. Belize City was easy to navigate, and the flight from Houston was smoother than I expected. If you’re planning a winter trip, definitely check availability early—it sells out faster than you’d think.