Are there nonstop flights from Detroit (DTW) to Halifax (YHZ)?

Yes. WestJet fly this route. Flight time is about 2h 24m.

What is the fastest connection from Detroit (DTW) to Halifax (YHZ)?

via Toronto ≈ 2h 55m, via Montréal ≈ 2h 57m, via Boston ≈ 2h 59m (estimated flying time, excluding layovers).

from 15,000 JAL miles (economy, one way, based on the published award charts).

Detroit Metropolitan Wayne County Airport (DTW) to Halifax / Stanfield International Airport (YHZ)・1,622 km

Nonstop flights available (1 airline). Flight time about 2h 24m. Nonstop return flights also operate.

With milesJAL 15,000 miles+ (via PHL)Economy, one way, estimate. Tap a connection for miles by cabin.

9 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.