Boston (BOS) to Atlanta (ATL): 945 miles (1,521 km) great-circle, about 2h 25m nonstop by our estimate. Cheapest fare observed: $170 round-trip on Frontier, nonstop, departing May 16, 2026.
$170 round-trip, Frontier F93511, departing 2026-05-16 at 12:01, returning 2026-05-17. The recorded itinerary left on a Saturday, returning on a Sunday 1 night later; the fare was observed 21 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $170, it ranked 4th of the 30 round-trip fares we recorded from BOS (median $623). That is 18.0 cents per great-circle mile (round-trip price over one-way distance), close to the BOS median of 19.1 cents across 30 round-trip routes.
Routes from BOS of similar length: Jacksonville (1,011 mi) at $212 and Chicago (864 mi) at $157.
Frontier had the cheapest fare on 6 of 30 BOS routes. It is the 27th longest of the 30 routes we track from BOS.
Of 24 departure airports with a fare to Atlanta, Boston (BOS) ranked 12th at $170. 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).
The reverse, Atlanta (ATL) to Boston (BOS), was $144 round-trip on Frontier, nonstop, departing May 8, 2026. Atlanta to Boston flights.
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.