Washington DC (IAD) to Atlanta (ATL): 534 miles (859 km) great-circle, about 1h 35m nonstop by our estimate. Cheapest fare observed: $122 round-trip on Frontier, nonstop, departing May 9, 2026.
$122 round-trip, Frontier F91081, departing 2026-05-09 at 11:07, returning 2026-05-12. The recorded itinerary left on a Saturday, returning on a Tuesday 3 nights later; the fare was observed 14 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $122, it ranked 2nd of the 30 round-trip fares we recorded from IAD (median $775). That is 22.9 cents per great-circle mile (round-trip price over one-way distance), close to the IAD median of 22.5 cents across 30 round-trip routes.
Routes from IAD of similar length: Chicago (587 mi) at $210 and Toronto (346 mi) at $299.
Frontier had the cheapest fare on 8 of 30 IAD routes. It is the 29th longest of the 30 routes we track from IAD.
Of 24 departure airports with a fare to Atlanta, Washington DC (IAD) ranked 8th at $122. Lowest: $52 from Fort Lauderdale (FLL); highest: $1436 from Nairobi (NBO); 12 nonstop. Cheapest-fare airlines (routes): Frontier (20), Spirit (2), airline F2 (1) and Copa (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/New_York; flight time is our estimate.