AirHint found the following cheapest return flights from Philadelphia (PHL) to Istanbul (IST) in January 2026 (see full year).
Return flights
| 23 Jan - 31 Jan | American Airlines | ||
| 16 Jan - 23 Jan | British Airways | ||
| 15 Jan - 20 Jan | British Airways | ||
| 13 Jan - 18 Jan | KLM |
Also check the deals for one-way flights from Philadelphia to Istanbul in January.
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