Flights Philadelphia → Miami — September 18, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Friday, September 18, 2026 on the Philadelphia–Miami route: 1 stop itinerary (2 flights) via San Juan (SJU), from Philadelphia International (PHL) to Miami International (MIA), first flight Frontier Airlines F91166, departs 1:59 PM, arrives 5:49 AM the next day, total travel time 15h 50m including layovers, flight time 6h 39m (layovers excluded), $146 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 8, 2026 and read by AirSource on September 10, 2026, 21:23 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Frontier Airlines F91203, from Philadelphia International (PHL) to Miami International (MIA), departs 4:42 PM, arrives 7:45 PM, direct, 3h 3m, $150 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable.