Detroit (DTW) to Washington (WAS): 383 miles (616 km) great-circle, about 1h 15m nonstop by our estimate. Cheapest fare observed: $380 round-trip on United Airlines, nonstop, departing April 28, 2026.
$380 round-trip, United Airlines UA6190, departing 2026-04-28 at 14:05, returning 2026-04-30. The recorded itinerary left on a Tuesday, returning on a Thursday 2 nights later; the fare was observed 3 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $380, it ranked 20th of the 30 round-trip fares we recorded from DTW (median $275). That is 99.2 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: Baltimore (408 mi) at $148 and Philadelphia (452 mi) at $156.
United Airlines had the cheapest fare on 2 of 30 DTW routes. It is the 29th longest of the 30 routes we track from DTW.
Of 19 departure airports with a fare to Washington, Detroit (DTW) ranked 16th at $380. Lowest: $87 from Atlanta (ATL); highest: $572 from Los Angeles (LAX); 6 nonstop. Cheapest-fare airlines (routes): Frontier (10), United Airlines (3), American Airlines (2), Alaska Airlines (1), Copa (1) and Southwest (1), plus 1 more.
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.