Detroit (DTW) to Basel-Mulhouse (EAP): 4,198 miles (6,756 km) great-circle, about 8h 55m nonstop by our estimate. Cheapest fare observed: $1139 round-trip on WestJet, with 3 stops, departing June 9, 2026.
$1139 round-trip, WestJet WS1051, departing 2026-06-09 at 18:10, returning 2026-07-08. The recorded itinerary left on a Tuesday, returning on a Wednesday 29 nights later; the fare was observed 45 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1139, it ranked 26th of the 30 round-trip fares we recorded from DTW (median $275). That is 27.1 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: Zurich (4,244 mi) at $1100 and St. Petersburg (4,452 mi) at $1909.
WestJet had the cheapest fare on 2 of 30 DTW routes. It is the 9th longest of the 30 routes we track from DTW.
That depends on your passport and trip, so check the official source for France: European Commission: Schengen visa policy. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, Europe/Paris; flight time is our estimate.