Find Spirit Airlines(NK) flights from St. Louis to Miami

At the moment, several airlines serve connecting flights from St. Louis to Miami, including: Delta Air Lines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

It takes about 2 hours 45 minutes to fly from St. Louis to Miami.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from St. Louis to Miami is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

The cheapest months to fly from St. Louis to Miami is November, when demand for travel is lower.

After crunching the numbers on our June flight calendar, it's currently cheapest to fly from St. Louis to Miami on June 16, 2026 with Frontier Airlines, with prices starting at US$228.

You can land at any one of the following hubs in Miami, with St. Louis Lambert International Airport to Miami International Airport (STL-MIA) is by far the most common option on this route: Miami International Airport (MIA) Opa Locka Executive Airport (OPF).

The time difference between Miami and St. Louis is 1h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.