Are there nonstop flights from Constantine (CZL) to Cologne (CGN)?

No. The fastest connection is via Nice, about 2h 55m of total flying time.

What is the fastest connection from Constantine (CZL) to Cologne (CGN)?

via Nice ≈ 2h 55m, via Monastir ≈ 3h 27m (estimated flying time, excluding layovers).

Mohamed Boudiaf International Airport (CZL) to Cologne Bonn Airport (CGN)・1,623 km

No nonstop flights. The fastest connection is via Nice (NCE), about 2h 55m of flying time (layover not included).

None.

2 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.