Flights Miami → Seattle — September 16, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Wednesday, September 16, 2026 on the Miami–Seattle route: 3 stops itinerary (4 flights) via Dallas/Fort Worth (DFW) and San Francisco International (SFO) and Denver International (DEN), from Miami International (MIA) to Seattle-Tacoma (SEA), first flight Frontier Airlines F92135, departs 2:37 PM, arrives 3:08 PM the next day, total travel time 27h 31m including layovers, flight time 13h 12m (layovers excluded), $402 per person. Price found in an Aviasales search on September 4, 2026 and read by AirSource on September 10, 2026, 20:47 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Alaska Airlines AS305, from Miami International (MIA) to Seattle-Tacoma (SEA), departs 6:16 PM, arrives 9:54 PM, direct, 6h 38m, $481 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.