Detroit (DTW) to Baltimore (BWI): 408 miles (657 km) great-circle, about 1h 20m nonstop by our estimate. Cheapest fare observed: $148 round-trip on Frontier, nonstop, departing May 17, 2026.
$148 round-trip, Frontier F91516, departing 2026-05-17 at 12:55, returning 2026-05-19. The recorded itinerary left on a Sunday, returning on a Tuesday 2 nights later; the fare was observed 22 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $148, it ranked 3rd of the 30 round-trip fares we recorded from DTW (median $275). That is 36.3 cents per great-circle mile (round-trip price over one-way distance), above the DTW median of 22.2 cents across 30 round-trip routes.
Routes from DTW of similar length: Washington (383 mi) at $380 and Philadelphia (452 mi) at $156.
Frontier had the cheapest fare on 17 of 30 DTW routes. It is the 28th longest of the 30 routes we track from DTW.
Of 10 departure airports with a fare to Baltimore, Detroit (DTW) ranked 7th at $148. Lowest: $83 from Fort Lauderdale (FLL); highest: $1376 from Lagos (LOS); 6 nonstop. Cheapest-fare airlines (routes): Frontier (6), JetSMART (1), Qatar (1), Southwest (1) and Spirit (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.