Turkish Airlines has round-trip flights from Atlanta (ATL) to Istanbul (IST) for $858, NONSTOP. Flights January to March. Departures on Monday, Tuesday, Wednesday, and Sunday.
Some small OTAs on Skyscanner and Kayak have this for as low as $828; which is cheaper than the airline. If you plan on booking there, beware of any site that charges a fee to cancel a ticket within the 24-hour “free” period. Use unknown booking sites at your own risk.
We’re also seeing flights WITH STOPS and LONG CONNECTIONS for about $650. We don’t think it’s worth it due to the additional time required in transit, especially if you value your vacation time to be worth more than $20 an hour.
Click for more details and booking links Nonstop Flights: Atlanta to Istanbul $828-$858 r/t [January-March] – Turkish Airlines