AirHint found the following cheapest return flights from Constantine (CZL) to Istanbul (IST) in January 2026 (see full year).

Return flights

24 Jan - 01 Feb	Air Algerie
16 Jan - 19 Jan	Air Algerie
05 Jan - 12 Jan	Air Algerie
04 Jan - 11 Jan	Air Algerie
13 Jan - 20 Jan	Air Algerie
26 Jan - 29 Jan	Turkish Airlines	direct
29 Jan - 12 Feb	Air Algerie
20 Jan - 26 Jan	Air Algerie
24 Jan - 27 Jan	Air Algerie
15 Jan - 23 Jan	Air Algerie
20 Jan - 01 Feb	Air Algerie
24 Jan - 01 Feb	Air Algerie	direct
20 Jan - 05 Feb	Air Algerie
29 Jan - 06 Feb	Air Algerie
25 Jan - 12 Feb	Air Algerie
31 Jan - 19 Feb	Turkish Airlines	direct
25 Jan - 07 Feb	Air Algerie
02 Jan - 09 Jan	Air Algerie
16 Jan - 25 Jan	Air Algerie
29 Jan - 05 Feb	Volotea

Also check the deals for one-way flights from Constantine to Istanbul in January.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Constantine to Istanbul in January from $176

Return flights