Cheapest return flights from Seattle to Istanbul in April from $691

Best time to book flights for Seattle (SEA) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Istanbul (IST) in April 2025 (see full year).

Return flights

28 Apr - 06 May Icelandair
29 Apr - 06 May Icelandair
26 Apr - 04 May Icelandair
25 Apr - 09 May Icelandair
25 Apr - 18 May Icelandair
26 Apr - 01 May Icelandair
24 Apr - 05 May Icelandair
24 Apr - 08 May Condor
17 Apr - 24 Apr Icelandair
16 Apr - 28 Apr Alaska Airlines
07 Apr - 14 Apr Icelandair
20 Apr - 26 Apr Icelandair
16 Apr - 23 Apr Hawaiian Airlines
06 Apr - 13 Apr Lufthansa
08 Apr - 29 Apr Qatar Airways
16 Apr - 23 Apr Turkish Airlines direct
28 Apr - 06 May Turkish Airlines direct
16 Apr - 28 Apr Turkish Airlines direct
17 Apr - 24 Apr Turkish Airlines direct
29 Apr - 06 May Turkish Airlines direct

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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