Fly nonstop from San Francisco to Miami for $227 roundtrip or vice-versa on American and United Airlines.
Flights for this fare start on August 21 and run through November 6, 2018. Travel is available any day of the week except on Sundays, no minimum stay required. Tickets at this price book into Basic Economy, which limit your carry-on allowance to just one small personal item such as a purse or small backpack that will fit underneath your seat. If you find that too restrictive, on American the Main Cabin fare is only $33 more bringing the flight total to $260, which is still a very good price for a cross-country flight.
Seen below, I found seats departing SFO on Friday, September 7, and returning from MIA on Monday, September 10, 2018. This fare is widely available so you shouldn't have any trouble finding it for your travel dates.
Have a look at all our current finds departing the Bay Area on the San Francisco (SFO) and Oakland (OAK) flight deal pages.
Need a place to stay in South Beach? We've got a full list of available accommodations on the dates mentioned just for you on Hotelwatchdog.