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Cheap flights from St Louis to Istanbul

Compare St Louis to Istanbul flight deals

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Flight deals from St Louis to Istanbul

Looking for a cheap last-minute deal or the best round-trip flight from St Louis Airport to Istanbul Airport? If you want to travel next month, round-trip fares start from $1,006. Find the lowest prices on one-way and round-trip tickets right here.
Istanbul.$639 per passenger.Departing Wed, Oct 21, returning Wed, Nov 4.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Wed, Oct 21, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, Nov 4, arriving in St Louis.Price includes taxes and charges.From $639, select.
Istanbul.$639 per passenger.Departing Mon, Nov 2, returning Fri, Nov 13.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Mon, Nov 2, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Fri, Nov 13, arriving in St Louis.Price includes taxes and charges.From $639, select.
Istanbul.$684 per passenger.Departing Wed, Jul 15, returning Wed, Jul 29.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Wed, Jul 15, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, Jul 29, arriving in St Louis.Price includes taxes and charges.From $684, select.
Istanbul.$689 per passenger.Departing Sun, Oct 18, returning Sat, Oct 31.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Sun, Oct 18, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Sat, Oct 31, arriving in St Louis.Price includes taxes and charges.From $689, select.
Istanbul.$690 per passenger.Departing Fri, Aug 14, returning Wed, Aug 26.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Fri, Aug 14, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, Aug 26, arriving in St Louis.Price includes taxes and charges.From $690, select.
Istanbul.$698 per passenger.Departing Wed, Aug 26, returning Wed, Sep 16.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Wed, Aug 26, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, Sep 16, arriving in St Louis.Price includes taxes and charges.From $698, select.
Istanbul.$884 per passenger.Departing Thu, Jul 30, returning Mon, Aug 10.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Thu, Jul 30, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Mon, Aug 10, arriving in St Louis.Price includes taxes and charges.From $884, select.
Istanbul.$904 per passenger.Departing Fri, Dec 25, returning Thu, Jan 7.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Fri, Dec 25, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Thu, Jan 7, arriving in St Louis.Price includes taxes and charges.From $904, select.
Istanbul.$939 per passenger.Departing Sat, Jan 2, returning Sun, Jan 10.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Sat, Jan 2, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Sun, Jan 10, arriving in St Louis.Price includes taxes and charges.From $939, select.
Istanbul.$1,006 per passenger.Departing Tue, Jun 9, returning Thu, Jun 25.Round-trip flight with Frontier Airlines and Turkish Airlines.Outbound indirect flight with Frontier Airlines, departing from St Louis on Tue, Jun 9, arriving in Istanbul.Inbound indirect flight with Turkish Airlines, departing from Istanbul on Thu, Jun 25, arriving in St Louis.Price includes taxes and charges.From $1,006, select.
Istanbul.$1,089 per passenger.Departing Tue, May 19, returning Wed, May 27.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Tue, May 19, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, May 27, arriving in St Louis.Price includes taxes and charges.From $1,089, select.
Istanbul.$1,117 per passenger.Departing Tue, May 26, returning Wed, Jun 3.Round-trip flight with Frontier Airlines and Wizz Air UK.Outbound indirect flight with Frontier Airlines, departing from St Louis on Tue, May 26, arriving in Istanbul.Inbound indirect flight with Wizz Air UK, departing from Istanbul on Wed, Jun 3, arriving in St Louis.Price includes taxes and charges.From $1,117, select.
Istanbul.$1,165 per passenger.Departing Sun, Sep 6, returning Wed, Sep 9.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Sun, Sep 6, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, Sep 9, arriving in St Louis.Price includes taxes and charges.From $1,165, select.
Istanbul.$1,219 per passenger.Departing Tue, Jun 23, returning Wed, Jul 22.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from St Louis on Tue, Jun 23, arriving in Istanbul.Inbound indirect flight with Delta, departing from Istanbul on Wed, Jul 22, arriving in St Louis.Price includes taxes and charges.From $1,219, select.
Istanbul.$1,239 per passenger.Departing Thu, Dec 3, returning Sun, Dec 6.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from St Louis on Thu, Dec 3, arriving in Istanbul.Inbound indirect flight with Lufthansa, departing from Istanbul on Sun, Dec 6, arriving in St Louis.Price includes taxes and charges.From $1,239, select.
Istanbul.$1,297 per passenger.Departing Tue, Sep 29, returning Fri, Oct 2.Round-trip flight with Lufthansa and Turkish Airlines.Outbound indirect flight with Lufthansa, departing from St Louis on Tue, Sep 29, arriving in Istanbul.Inbound indirect flight with Turkish Airlines, departing from Istanbul on Fri, Oct 2, arriving in St Louis.Price includes taxes and charges.From $1,297, select.

Find the cheapest month to fly from St Louis to Istanbul

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Istanbul flights are currently cheapest in November.
May
from $1,089
Jun
from $1,006
Jul
from $684
Aug
from $690
Sep
from $1,165
Oct
from $689
Nov
from $639
Dec
from $1,239
Jan
from $939
Feb
Find prices
Mar
Find prices
Apr
Find prices

St Louis to Istanbul: Alternative routes

Compare routes from St Louis to Istanbul below. You may find an airport to fly into that's cheaper, faster, or easier than Istanbul.

Istanbul Sabiha

30km from central Istanbul
Closest
from $1,111
Search flights

Istanbul

34km from central Istanbul
Cheapest
from $639
Search flights

St Louis to Istanbul: Flight information

The things to know before you go.
Cheapest flight found$639
Cheapest month to flyOctober

Finding cheap flights from St Louis to Istanbul: Frequently asked questions

The best price we found for a round-trip flight from St Louis to Istanbul is $639. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Istanbul. But we found flights with one or more stops from $639.
There are no flights flying from St Louis to Istanbul, as of May 2026.
The cheapest month to fly from St Louis to Istanbul is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Istanbul Airport on Wednesday, October 21, 2026.
No airlines currently offer direct flights between St Louis Airport and Istanbul Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Istanbul but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Istanbul is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Istanbul.

Traveling from Lambert-St. Louis International Airport (STL) to Istanbul Ataturk Airport (IST): what you need to know

  • Istanbul is eight hours ahead of St Louis and is in the UTC+3 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Be at the airport with enough time to catch your STL to IST flight.

  • You'll likely experience longer lines in popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures will help ensure a smooth travel experience.

  • If you want to break up your flight, just deselect 'Direct flights only' when searching for your ticket from Lambert-St. Louis International Airport to Istanbul Ataturk Airport. These are the most popular stopovers between STL and IST:

    • O'Hare International Airport

    • Pearson International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Istanbul Ataturk Airport (IST)

  • $440 is currently the lowest price for a one-way Lambert-St. Louis International Airport to Istanbul Ataturk Airport flight. A return flight starts from $639. These fares may change based on availability.

  • It's usually smart to book early if you're hoping to get cheap tickets from STL to IST. That's because airlines change prices based on demand, which tends to rise closer to departure.

  • Finding cheap flights from Lambert-St. Louis International Airport to Istanbul Ataturk Airport is easy if you're flexible with your travel plans. Use the 'Whole month' tool to see the best prices across the month and score a great deal.

  • Landing cheap flights from STL to IST is easy with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as there's a better deal.

  • Pick your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Lambert-St. Louis International Airport to Istanbul Ataturk Airport.

Handy information about Lambert-St. Louis International Airport (STL)

Arriving at Istanbul Ataturk Airport (IST)

  • The last thing you need is a long journey to your hotel if you're getting in late on a Lambert-St. Louis International Airport to Istanbul Ataturk Airport flight. Reserve one of these accommodation options near IST instead:

  • Travel at your own speed with an Istanbul Ataturk Airport rental car. Pick up your wheels from Hit, Avec car rentals or Eren Rent a Car and experience more of Istanbul and beyond.

  • Booking your vehicle from Istanbul Ataturk Airport around two weeks ahead boosts your odds of scoring a great price.

Getting from Istanbul Ataturk Airport (IST) to central Istanbul

  • From Istanbul Ataturk Airport, Istanbul is approximately 48 kilometers away. It takes around 50 minutes to reach the center by car.

  • Getting to the center by public transport typically takes 1 hour 45 minutes.

When to fly to Istanbul Ataturk Airport (IST)

  • It's time to choose your dates for your flight from Lambert-St. Louis International Airport to Istanbul Ataturk Airport. April is the most popular month to visit Istanbul. If you're after a quieter vibe, go in February.

  • Lock in your flight from Lambert-St. Louis International Airport to Istanbul Ataturk Airport for August if you'd like to go to Istanbul during its warmest month. You can expect temperatures of between 20ºC (68ºF) and 30ºC (86ºF).

  • January sees average temperatures of between 2ºC (36ºF) and 11ºC (52ºF). Search for cheap tickets from STL to IST sometime then if you want to travel in cooler conditions.

Explore more of Türkiye (Turkey)

  • Istanbul has loads to offer, but there are so many other parts of Türkiye (Turkey) waiting to be explored. About 354 kilometers east of Istanbul, a visit to Ankara will keep your itinerary busy. Start with leading sights like Museum of Anatolian Civilizations, Kocatepe Mosque (Kocatepe Camii) and Genclik Park.

  • Izmir is another favorite destination in Türkiye (Turkey) and is around 322 kilometers south-west of Istanbul. No trip is complete without experiencing Kordonboyu, Kadifekale Castle and Konak Square.

More travel options

Plan the rest of your trip from St Louis to Istanbul

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.