Cheapest return flights from Washington to Istanbul in April from $636

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

Return flights

20 Apr - 27 Apr SWISS
05 Apr - 10 Apr SWISS
22 Apr - 28 Apr Scandinavian Airlines
05 Apr - 11 Apr Austrian Airlines
03 Apr - 17 Apr KLM
13 Apr - 17 Apr Scandinavian Airlines
13 Apr - 20 Apr Air Canada
06 Apr - 11 Apr Austrian Airlines
15 Apr - 20 Apr Air Canada
06 Apr - 20 Apr KLM
27 Apr - 17 May KLM
28 Apr - 17 May KLM
02 Apr - 25 May KLM

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

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