Dallas (DFW) to Boston (BOS): 1,559 miles (2,509 km) great-circle, about 3h 35m nonstop by our estimate. Cheapest fare observed: $128 round-trip on Frontier, with 1 stop, departing May 27, 2026.
$128 round-trip, Frontier F92496, departing 2026-05-27 at 16:24, returning 2026-05-29. The recorded itinerary left on a Wednesday, returning on a Friday 2 nights later; the fare was observed 32 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $128, it ranked 9th of the 30 round-trip fares we recorded from DFW (median $198). That is 8.2 cents per great-circle mile (round-trip price over one-way distance), below the DFW median of 15.9 cents across 30 round-trip routes.
Routes from DFW of similar length: Seattle (1,658 mi) at $276 and San Salvador (1,435 mi) at $490.
Frontier had the cheapest fare on 18 of 30 DFW routes. It is the 10th longest of the 30 routes we track from DFW.
Of 22 departure airports with a fare to Boston, Dallas (DFW) ranked 2nd at $128. Lowest: $101 from Fort Lauderdale (FLL); highest: $1271 from Nairobi (NBO); 5 nonstop. Cheapest-fare airlines (routes): American Airlines (6), Frontier (5), Spirit (4), Southwest (3), Avianca (1) and Brussels Airlines (1), plus 2 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/New_York; flight time is our estimate.