Tampa (TPA) to Seattle (SEA): 2,517 miles (4,051 km) great-circle, about 5h 30m nonstop by our estimate. Cheapest fare observed: $370 round-trip on Frontier, with 1 stop, departing June 19, 2026.
$370 round-trip, Frontier F92745, departing 2026-06-19 at 20:22, returning 2026-06-29. The recorded itinerary left on a Friday, returning on a Monday 10 nights later; the fare was observed 55 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $370, it ranked 20th of the 30 round-trip fares we recorded from TPA (median $242). That is 14.7 cents per great-circle mile (round-trip price over one-way distance), below the TPA median of 17.9 cents across 30 round-trip routes.
Routes from TPA of similar length: Portland (2,494 mi) at $304 and Los Angeles (2,154 mi) at $261.
Frontier had the cheapest fare on 18 of 30 TPA routes. It is the 9th longest of the 30 routes we track from TPA.
Of 18 departure airports with a fare to Seattle, Tampa (TPA) ranked 16th at $370. Lowest: $122 from Houston (IAH); highest: $690 from Punta Cana (PUJ); 5 nonstop. Cheapest-fare airlines (routes): Frontier (13), Alaska Airlines (2), Air Canada (1), Southwest (1) and United Airlines (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Los_Angeles; flight time is our estimate.