Generally, Fort Lauderdale-Hollywood International (FLL) is cheaper than Miami International (MIA), especially for domestic travelers within the United States. FLL serves as a major hub for low-cost carriers like Spirit, JetBlue, and Southwest, which creates downward pressure on ticket prices. Because these airlines have a massive presence at FLL, you can often find fares that are $50 to $100 cheaper than the same route into MIA. However, MIA is a massive international gateway and the primary hub for American Airlines; for international travelers or those coming from major global cities, MIA might offer more direct flights and competitive pricing due to higher volume. When deciding, you must also factor in ground transportation: if your final destination is South Beach, the $30-$40 Uber from FLL might cancel out any flight savings compared to a $15 ride from MIA.