Are there nonstop flights from Marseille (MRS) to Brest (BES)?

Yes. Volotea, Transavia fly this route. Flight time is about 1h 36m.

What is the fastest connection from Marseille (MRS) to Brest (BES)?

via Bordeaux ≈ 2h 10m, via Toulouse ≈ 2h 11m, via Lyon ≈ 2h 13m (estimated flying time, excluding layovers).

from 12,000 JAL miles (economy, one way, based on the published award charts).

Marseille Provence Airport (MRS) to Brest Bretagne airport (BES)・929 km

Nonstop flights available (2 airlines). Flight time about 1h 36m. Nonstop return flights also operate.

With milesJAL 12,000 miles+ (via LYS)Economy, one way, estimate. Tap a connection for miles by cabin.

18 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.