Cheapest return flights from Washington to Istanbul in April from $558

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

Return flights

13 Apr - 17 Apr Scandinavian Airlines
15 Apr - 25 Apr Scandinavian Airlines
23 Apr - 27 Apr Scandinavian Airlines
12 Apr - 24 Apr Scandinavian Airlines
09 Apr - 25 Apr Scandinavian Airlines
06 Apr - 11 Apr Scandinavian Airlines
11 Apr - 25 Apr Scandinavian Airlines
25 Apr - 04 May Scandinavian Airlines
03 Apr - 10 Apr Scandinavian Airlines
08 Apr - 04 May Scandinavian Airlines
14 Apr - 28 Apr Lufthansa
26 Apr - 19 May Icelandair
01 Apr - 22 Apr Scandinavian Airlines
26 Apr - 15 May Scandinavian Airlines
07 Apr - 02 May Lufthansa
07 Apr - 02 May Turkish Airlines direct
26 Apr - 19 May Turkish Airlines direct

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

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