Cheapest return flights from Washington to Istanbul in April from $617

AirHint found the following cheapest return flights from Washington (IAD) to Istanbul (IST) in April 2026 (see full year).

Return flights

02 Apr - 09 Apr Scandinavian Airlines
26 Apr - 15 May Scandinavian Airlines
01 Apr - 25 Apr Scandinavian Airlines
16 Apr - 30 Apr Scandinavian Airlines
19 Apr - 03 May Scandinavian Airlines
29 Apr - 23 May Scandinavian Airlines
10 Apr - 19 Apr Scandinavian Airlines
14 Apr - 30 Apr Lufthansa
03 Apr - 11 Apr Scandinavian Airlines
02 Apr - 09 Apr Turkish Airlines direct
10 Apr - 19 Apr Turkish Airlines direct
03 Apr - 11 Apr Turkish Airlines direct
14 Apr - 30 Apr Turkish Airlines direct
19 Apr - 03 May Turkish Airlines direct

Also check the deals for one-way flights from Washington to Istanbul in April.

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