Atlanta (ATL) to Seattle (SEA): 2,178 miles (3,505 km) great-circle, about 4h 50m nonstop by our estimate. Cheapest fare observed: $211 round-trip on Frontier, with 1 stop, departing April 27, 2026.
$211 round-trip, Frontier F93599, departing 2026-04-27 at 20:51, returning 2026-05-04. The recorded itinerary left on a Monday, returning on a Monday 7 nights later; the fare was observed 2 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $211, it ranked 15th of the 30 round-trip fares we recorded from ATL (median $212). That is 9.7 cents per great-circle mile (round-trip price over one-way distance), below the ATL median of 15.8 cents across 30 round-trip routes.
Routes from ATL of similar length: Medellin (1,984 mi) at $314 and Los Angeles (1,942 mi) at $123.
Frontier had the cheapest fare on 18 of 30 ATL routes. It is the 11th longest of the 30 routes we track from ATL.
Of 18 departure airports with a fare to Seattle, Atlanta (ATL) ranked 7th at $211. 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.