Delta Air Lines: Multiple daily nonstop flights from Detroit Metropolitan Wayne County Airport (DTW) to Orlando International Airport (MCO), higher frequency, better on-time record, and more included amenities; generally higher base fares. Spirit Airlines and Frontier: Often provide the lowest base fares for March travel but charge for seat selection, carry-on/checked bags, and extras—best for budget travelers who pack light. American Airlines and United: Offer connecting options via hub cities (Charlotte, Chicago, etc.) and competitive fares when booked in advance. Compare total price including baggage and seat fees and search phrases like "Delta DTW MCO March nonstop" or "cheapest carrier Detroit to Orlando March" to identify the best value for your priorities.