$475+ Cheap flights from St. Louis (STL) to Istanbul (IST)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Istanbul
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Best
Last-minute
One-way
Cheapest flights from St. Louis to IstanbulExplore the most affordable flight options available from St. Louis to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from St. Louis to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This oojo deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Fri 12/256:30 am
IST
- STL
2 stops25h 52m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$798
This Justfly.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:08 pm
STL
- IST
2 stops28h 57m
Lufthansa
Fri 12/256:30 am
IST
- STL
1 stop16h 15m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$817
This oojo deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Tue 12/227:05 pm
IST
- STL
1 stop27h 40m
Lufthansa
Deal found 7/18![Lufthansa logo]()
$821
This Justfly.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Wed 12/234:45 am
IST
- STL
2 stops25h 33m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$822
This KAYAK deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Fri 12/186:30 am
IST
- STL
1 stop16h 15m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$829
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:40 pm
STL
- IST
1 stop17h 30m
United Airlines
Fri 12/186:30 am
IST
- STL
1 stop16h 15m
United Airlines
Deal found 7/19![United Airlines logo]()
$830
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/243:15 pm
STL
- IST
2 stops22h 30m
United Airlines
Fri 12/256:30 am
IST
- STL
1 stop16h 15m
United Airlines
Deal found 7/18![United Airlines logo]()
$834
This FlightHub deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:04 pm
STL
- IST
2 stops42h 41m
Lufthansa
Tue 12/224:45 am
IST
- STL
2 stops21h 23m
Lufthansa
Deal found 7/18![Lufthansa logo]()
$838
This KAYAK deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Tue 12/224:45 am
IST
- STL
2 stops21h 23m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$839
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:40 pm
STL
- IST
1 stop22h 05m
United Airlines
Thu 12/246:30 am
IST
- STL
2 stops20h 43m
United Airlines
Deal found 7/19![United Airlines logo]()
$840
This KAYAK deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:40 pm
STL
- IST
1 stop22h 05m
Lufthansa
Tue 12/154:45 am
IST
- STL
2 stops25h 28m
Lufthansa
Deal found 7/18![Lufthansa logo]()
$845
Best flights from St. Louis to IstanbulDiscover carefully curated flight deals from St. Louis to Istanbul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from St. Louis to Istanbul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:00 pm
STL
- IST
2 stops19h 55m
Lufthansa
Wed 9/91:55 pm
IST
- STL
2 stops17h 04m
Lufthansa
Deal found 7/23![Lufthansa logo]()
$868
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:30 pm
STL
- IST
1 stop21h 55m
United Airlines
Wed 9/95:40 am
IST
- STL
1 stop15h 45m
United Airlines
Deal found 7/19![United Airlines logo]()
$916
This Turkish Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:00 am
STL
- IST
1 stop22h 50m
Turkish Airlines
Sat 10/317:35 am
IST
- STL
1 stop16h 06m
Turkish Airlines
Deal found 7/21![Turkish Airlines logo]()
$1,206
This Turkish Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:00 am
STL
- IST
1 stop13h 45m
Multiple Airlines
Sat 10/317:35 am
IST
- STL
1 stop14h 55m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,206
This BusinessClass deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:25 am
STL
- IST
2 stops17h 35m
Lufthansa
Mon 8/171:55 pm
IST
- STL
2 stops40h 32m
Lufthansa
Deal found 7/23![Lufthansa logo]()
$1,140
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am
STL
- IST
2 stops30h 25m
United Airlines
Fri 9/115:40 am
IST
- STL
1 stop15h 45m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,170
This Turkish Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:00 am
STL
- IST
1 stop13h 45m
Turkish Airlines
Sun 11/17:35 am
IST
- STL
1 stop17h 06m
Turkish Airlines
Deal found 7/21![Turkish Airlines logo]()
$1,276
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:50 am
STL
- IST
2 stops20h 10m
United Airlines
Sun 8/231:55 pm
IST
- STL
2 stops51h 44m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,176
This Turkish Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:00 am
STL
- IST
1 stop22h 50m
Turkish Airlines
Wed 10/287:35 am
IST
- STL
1 stop16h 06m
Turkish Airlines
Deal found 7/21![Turkish Airlines logo]()
$1,276
Last-minute flights from St. Louis to IstanbulDiscover last-minute flight deals from St. Louis to Istanbul. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Istanbul. Data last updated July 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:30 pm
STL
- IST
1 stop13h 30m
Lufthansa
Tue 8/255:50 pm
IST
- STL
1 stop27h 35m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$878
This Gotogate deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:10 pm
STL
- IST
2 stops16h 50m
Multiple Airlines
Tue 8/255:50 pm
IST
- STL
1 stop27h 35m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$889
This oojo deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:54 pm
STL
- IST
2 stops23h 11m
Lufthansa
Tue 9/83:45 am
IST
- STL
2 stops19h 53m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$863
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:00 pm
STL
- IST
2 stops19h 55m
Lufthansa
Wed 9/91:55 pm
IST
- STL
2 stops17h 04m
Lufthansa
Deal found 7/23![Lufthansa logo]()
$868
One-way flights from St. Louis to IstanbulSearch for one-way flight options from St. Louis to Istanbul. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from St. Louis to Istanbul. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:34 pm
STL
- IST
3 stops40h 56m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$475
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/74:09 pm
STL
- IST
3 stops53h 21m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$484
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/24:09 pm
STL
- IST
3 stops53h 21m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:57 pm
STL
- IST
2 stops59h 38m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$587
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/284:09 pm
STL
- IST
3 stops53h 21m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$588
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:09 pm
STL
- IST
3 stops53h 21m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$590
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/314:09 pm
STL
- IST
3 stops56h 31m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$625
This KAYAK deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:43 am
STL
- IST
2 stops33h 22m
Lufthansa
Deal found 7/23![Lufthansa logo]()
$631
This KAYAK deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/33:30 pm
STL
- IST
1 stop21h 55m
Lufthansa
Deal found 7/23![Lufthansa logo]()
$633
Find flight deals from St. Louis to Istanbul
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Istanbul (IST). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $798 (oojo) |
One-way from | $475 (Kiwi.com) |
Popular in | June |
Cheapest in | December |
Average price | $1,110 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Istanbul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
Use the filters below to find and compare flights from St. Louis to Istanbul Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Wed 8/26
1:00 pm-4:55 pm
2 stops19h 55m
Istanbul
Wed 9/9
1:55 pm-10:59 pm
2 stops17h 04m
$868
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Wed 8/26
3:30 pm-9:25 pm
1 stop21h 55m
Istanbul
Wed 9/9
5:40 am-1:25 pm
1 stop15h 45m
$916
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 8/10
11:25 am-1:00 pm
2 stops17h 35m
Istanbul
Mon 8/17
1:55 pm-10:27 pm
2 stops40h 32m
$1,140
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Fri 9/4
7:00 am-9:25 pm
2 stops30h 25m
Istanbul
Fri 9/11
5:40 am-1:25 pm
1 stop15h 45m
$1,170
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Wed 8/12
8:50 am-1:00 pm
2 stops20h 10m
Istanbul
Sun 8/23
1:55 pm-9:39 am
2 stops51h 44m
$1,176
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 10/3
8:00 am-2:50 pm
1 stop22h 50m
Istanbul
Sat 10/31
7:35 am-3:41 pm
1 stop16h 06m
$1,206
Quickest round-trip
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 10/3
8:00 am-5:45 am
1 stop13h 45m
Istanbul
Sat 10/31
7:35 am-2:30 pm
1 stop14h 55m
$1,206
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 10/19
8:00 am-5:45 am
1 stop13h 45m
Istanbul
Sun 11/1
7:35 am-4:41 pm
1 stop17h 06m
$1,276
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 10/17
8:00 am-2:50 pm
1 stop22h 50m
Istanbul
Wed 10/28
7:35 am-3:41 pm
1 stop16h 06m
$1,276
Cheapest one-way
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Tue 8/4
6:34 pm-7:30 pm
3 stops40h 56m
$475
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Istanbul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Istanbul in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Istanbul Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Istanbul Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Istanbul Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Istanbul Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Istanbul Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Istanbul
Have a flexible travel schedule? Discover the best time to fly to Istanbul from St. Louis with our price prediction graph.
STL-IST
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Istanbul Airport
Prices
More
How far ahead should I book a flight from St. Louis to Istanbul Airport?
The best time to book flights from St. Louis to Istanbul Airport is 28 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from St. Louis to Istanbul Airport?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $597). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from St. Louis to Istanbul Airport?
Airfare is below average for this route at the moment.
St. Louis to Istanbul Airport flights typically cost between $819 and $1,124 in November.The cheapest round-trip price found within the last 5 days was $798 on Lufthansa (Nov 24-Dec 25).
What’s the top layover airport for flights from St. Louis to Istanbul Airport?
Share of 1-stop round-trip flights from St. Louis to Istanbul Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Frankfurt am Main (FRA) – chosen by Cheapflights users on 78% of 1-stop itineraries from St. Louis to Istanbul Airport on Cheapflights.
What’s the cheapest layover airport for flights from St. Louis to Istanbul Airport?
Average round-trip fare for 1-stop flights from St. Louis to Istanbul Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Frankfurt am Main (FRA) is the most affordable 1-stop option, with an average round-trip price of $708.
What’s the fastest layover option from St. Louis to Istanbul Airport?
Shortest average travel time for 1-stop one-way flights from St. Louis to Istanbul Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for 1-stop routes: 13h 29m.
Which airport typically offers the quickest layover for flights from St. Louis to Istanbul Airport?
Average layover duration for 1-stop one-way flights from St. Louis to Istanbul Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 2h 05m.
Reviews of airlines servicing Istanbul
Get insights into the airlines that provide service to Istanbul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Istanbul. Reviews last updated July 24, 2026.
Get a feel of what it's like to fly with KLM,Delta, andTurkish Airlines from St. Louis to Istanbul Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.7
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Food
7.3
Boarding
7.8
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
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Top 6 airlines flying from St. Louis to Istanbul
Discover the top 6 airlines that operate flights from St. Louis to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$576 | Average$872 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$585 | Average$1,003 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$589 | Average$930 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$617 | Average$968 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$633 | Average$1,074 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$866 | Average$1,321 | FlexibilityNo cancel fee | On-time77% |