San Francisco (SFO) to Miami (MIA): 2,581 miles (4,154 km) great-circle, about 5h 40m nonstop by our estimate. Cheapest fare observed: $249 round-trip on Frontier, with 1 stop, departing May 10, 2026.
$249 round-trip, Frontier F91448, departing 2026-05-10 at 22:15, returning 2026-05-15. The recorded itinerary left on a Sunday, returning on a Friday 5 nights later; the fare was observed 15 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $249, it ranked 6th of the 30 round-trip fares we recorded from SFO (median $646). That is 9.6 cents per great-circle mile (round-trip price over one-way distance), below the SFO median of 16.9 cents across 30 round-trip routes.
Routes from SFO of similar length: New York (2,580 mi) at $140 and Fort Lauderdale (2,579 mi) at $352.
Frontier had the cheapest fare on 7 of 30 SFO routes. It is the 17th longest of the 30 routes we track from SFO.
Of 30 departure airports with a fare to Miami, San Francisco (SFO) ranked 17th at $249. Lowest: $72 from Atlanta (ATL); highest: $1627 from Wellington (WLG); 10 nonstop. Cheapest-fare airlines (routes): Frontier (13), Spirit (4), Southwest (3), American Airlines (2), Arajet (2) and Avianca (1), plus 5 more.
The reverse, Miami (MIA) to San Francisco (SFO), was $288 round-trip on Frontier, 1 stop, departing July 16, 2026. Miami to San Francisco flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, America/New_York; flight time is our estimate.