Charlotte (CLT) to Seattle (SEA): 2,275 miles (3,661 km) great-circle, about 5h 05m nonstop by our estimate. Cheapest fare observed: $307 round-trip on Frontier, with 1 stop, departing July 22, 2026.
$307 round-trip, Frontier F91361, departing 2026-07-22 at 22:14, returning 2026-07-28. The recorded itinerary left on a Wednesday, returning on a Tuesday 6 nights later; the fare was observed 88 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $307, it ranked 16th of the 30 round-trip fares we recorded from CLT (median $293). That is 13.5 cents per great-circle mile (round-trip price over one-way distance), below the CLT median of 22.0 cents across 30 round-trip routes.
Routes from CLT of similar length: San Francisco (2,291 mi) at $278 and Los Angeles (2,120 mi) at $262.
Frontier had the cheapest fare on 17 of 30 CLT routes. It is the 8th longest of the 30 routes we track from CLT.
Of 18 departure airports with a fare to Seattle, Charlotte (CLT) ranked 15th at $307. 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.