AirHint found the following cheapest return flights from Constantine (CZL) to Istanbul (IST) in April 2026 (see full year).
Return flights
| 01 Apr - 07 Apr | Air Algerie | ||
| 13 Apr - 21 Apr | Air Algerie | ||
| 13 Apr - 21 Apr | Air Algerie | direct | |
| 15 Apr - 22 Apr | Turkish Airlines | direct | |
| 17 Apr - 24 Apr | Air Algerie | ||
| 01 Apr - 07 Apr | Turkish Airlines | direct |
Also check the deals for one-way flights from Constantine to Istanbul in April.
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