$407+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Jul 22 — Jul 291
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Istanbul with Cheapflights
1. Tell us where you want to go
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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Best
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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 June 22, 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 June 22, 2026.
This FlightHub deal was found by Cheapflights users on 6/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Mon 12/147:05 pm
IST
- STL
2 stops37h 20m
Lufthansa
Deal found 6/19![Lufthansa logo]()
$843
This oojo deal was found by Cheapflights users on 6/17. 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 8/173:30 pm
STL
- IST
1 stop13h 30m
Lufthansa
Tue 9/15:40 am
IST
- STL
1 stop15h 45m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$853
This KLM deal was found by Cheapflights users on 6/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:13 pm
STL
- IST
2 stops15h 42m
Multiple Airlines
Sat 12/127:15 am
IST
- STL
2 stops22h 22m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$858
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/298:43 am
STL
- IST
2 stops33h 22m
Lufthansa
Mon 8/245:55 pm
IST
- STL
2 stops53h 43m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$865
This FlightHub deal was found by Cheapflights users on 6/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Sun 12/136:30 am
IST
- STL
1 stop16h 15m
Lufthansa
Deal found 6/19![Lufthansa logo]()
$869
This Travelocity deal was found by Cheapflights users on 6/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:30 pm
STL
- IST
2 stops26h 35m
Multiple Airlines
Wed 8/269:30 am
IST
- STL
2 stops41h 12m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$879
This FlightHub deal was found by Cheapflights users on 6/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:04 pm
STL
- IST
2 stops23h 01m
Lufthansa
Sat 12/127:05 pm
IST
- STL
1 stop27h 40m
Lufthansa
Deal found 6/19![Lufthansa logo]()
$889
This oojo deal was found by Cheapflights users on 6/19. 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.
Sat 12/51:08 pm
STL
- IST
2 stops28h 57m
Lufthansa
Sun 12/136:30 am
IST
- STL
1 stop16h 15m
Lufthansa
Deal found 6/19![Lufthansa logo]()
$892
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/283:30 pm
STL
- IST
2 stops26h 35m
Lufthansa
Mon 8/245:55 pm
IST
- STL
2 stops53h 43m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$896
This Lufthansa deal was found by Cheapflights users on 6/17. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:30 pm
STL
- IST
1 stop13h 30m
Lufthansa
Wed 9/25:40 am
IST
- STL
1 stop15h 45m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$900
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 June 22, 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 June 22, 2026.
This Lufthansa deal was found by Cheapflights users on 6/17. 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 Lufthansa 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 9/15:40 am
IST
- STL
1 stop15h 45m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$908
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Sun 9/135:30 pm
STL
- IST
2 stops20h 05m
United Airlines
Sun 9/205:50 am
IST
- STL
2 stops25h 09m
United Airlines
Deal found 6/21![United Airlines logo]()
$991
This Qatar Airways deal was found by Cheapflights users on 6/21. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:01 am
STL
- IST
2 stops41h 14m
Qatar Airways
Sat 10/178:05 pm
IST
- STL
2 stops32h 03m
Qatar Airways
Deal found 6/21![Qatar Airways logo]()
$1,055
This United deal was found by Cheapflights users on 6/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/271:13 pm
STL
- IST
2 stops24h 12m
Multiple Airlines
Sat 8/295:50 pm
IST
- STL
1 stop27h 35m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,136
This Delta deal was found by Cheapflights users on 6/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:58 pm
STL
- IST
2 stops27h 32m
Delta
Sun 7/264:25 am
IST
- STL
2 stops27h 28m
Delta
Deal found 6/21![Delta logo]()
$1,173
This Lufthansa deal was found by Cheapflights users on 6/17. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:30 pm
STL
- IST
1 stop21h 55m
Lufthansa
Mon 8/245:55 pm
IST
- STL
1 stop27h 30m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$1,006
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Mon 7/273:30 pm
STL
- IST
1 stop13h 30m
United Airlines
Sun 8/235:50 am
IST
- STL
1 stop15h 35m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,051
This KLM deal was found by Cheapflights users on 6/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/65:36 pm
STL
- IST
2 stops14h 44m
Multiple Airlines
Fri 7/174:25 am
IST
- STL
2 stops20h 59m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$1,163
This Lufthansa deal was found by Cheapflights users on 6/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/283:30 pm
STL
- IST
1 stop21h 45m
Lufthansa
Thu 8/271:55 pm
IST
- STL
1 stop31h 30m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$1,093
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Sat 7/257:05 pm
STL
- IST
2 stops18h 10m
United Airlines
Tue 8/251:55 pm
IST
- STL
2 stops26h 44m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,132
This oojo deal was found by Cheapflights users on 6/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/257:05 pm
STL
- IST
2 stops23h 00m
Lufthansa
Thu 8/271:55 pm
IST
- STL
1 stop31h 30m
Lufthansa
Deal found 6/21![Lufthansa logo]()
$1,121
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/243:30 pm
STL
- IST
1 stop21h 55m
United Airlines
Thu 8/271:55 pm
IST
- STL
1 stop31h 30m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,185
Last-minute flights from St. Louis to IstanbulDiscover last-minute flight deals from St. Louis to Istanbul. Data last updated June 22, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Istanbul. Data last updated June 22, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/267:05 pm
STL
- IST
2 stops47h 00m
Lufthansa
Mon 8/245:55 pm
IST
- STL
2 stops53h 43m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$953
This Travelocity deal was found by Cheapflights users on 6/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:30 pm
STL
- IST
2 stops26h 35m
Multiple Airlines
Wed 8/269:30 am
IST
- STL
2 stops41h 12m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$879
This Expedia deal was found by Cheapflights users on 6/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:30 pm
STL
- IST
2 stops26h 35m
Multiple Airlines
Tue 8/258:55 pm
IST
- STL
2 stops29h 47m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$942
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2712:55 pm
STL
- IST
2 stops29h 10m
Lufthansa
Mon 8/245:55 pm
IST
- STL
1 stop27h 30m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$956
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/2712:55 pm
STL
- IST
2 stops29h 10m
Lufthansa
Tue 8/255:50 pm
IST
- STL
1 stop27h 35m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$957
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/283:30 pm
STL
- IST
2 stops26h 35m
Lufthansa
Mon 8/245:55 pm
IST
- STL
2 stops53h 43m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$896
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/298:43 am
STL
- IST
2 stops33h 22m
Lufthansa
Mon 8/245:55 pm
IST
- STL
2 stops53h 43m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$865
This Justfly.com deal was found by Cheapflights users on 6/16. 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 7/298:43 am
STL
- IST
2 stops33h 22m
Lufthansa
Wed 9/25:40 am
IST
- STL
1 stop15h 45m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$904
This KAYAK deal was found by Cheapflights users on 6/16. 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 7/298:43 am
STL
- IST
2 stops33h 22m
Lufthansa
Tue 8/255:50 pm
IST
- STL
1 stop27h 35m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$935
This KAYAK deal was found by Cheapflights users on 6/16. 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.
Thu 7/301:13 pm
STL
- IST
2 stops24h 22m
Lufthansa
Mon 8/245:55 pm
IST
- STL
2 stops53h 43m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$926
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 June 22, 2026.
Search for one-way flight options from St. Louis to Istanbul. Find affordable one-way fares based on user searches. Data last updated June 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Tue 9/1510:35 am
STL
- IST
3 stops39h 10m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/17. 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
3 stops42h 33m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$460
This Booking.com deal was found by Cheapflights users on 6/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:30 pm
STL
- IST
1 stop13h 30m
Lufthansa
Deal found 6/21![Lufthansa logo]()
$468
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/84:09 pm
STL
- IST
2 stops43h 21m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$531
This oojo deal was found by Cheapflights users on 6/17. 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 8/53:30 pm
STL
- IST
1 stop21h 55m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$609
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Thu 6/257:38 pm
STL
- IST
3 stops39h 47m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$763
This oojo deal was found by Cheapflights users on 6/18. 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.
Wed 7/83:30 pm
STL
- IST
1 stop21h 55m
Lufthansa
Deal found 6/18![Lufthansa logo]()
$800
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 June 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $853 (oojo) |
One-way from | $407 (Kiwi.com) |
Popular in | June |
Cheapest in | December |
Average price | $1,357 |
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 June 22, 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
Tue 8/18
3:30 pm-1:00 pm
1 stop13h 30m
Istanbul
Tue 9/1
5:40 am-1:25 pm
1 stop15h 45m
$908
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sun 9/13
5:30 pm-9:35 pm
2 stops20h 05m
Istanbul
Sun 9/20
5:50 am-10:59 pm
2 stops25h 09m
$991
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/27
3:30 pm-9:25 pm
1 stop21h 55m
Istanbul
Mon 8/24
5:55 pm-1:25 pm
1 stop27h 30m
$1,006
Quickest round-trip
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/27
3:30 pm-1:00 pm
1 stop13h 30m
Istanbul
Sun 8/23
5:50 am-1:25 pm
1 stop15h 35m
$1,051
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 9/19
11:01 am-12:15 pm
2 stops41h 14m
Istanbul
Sat 10/17
8:05 pm-8:08 pm
2 stops32h 03m
$1,055
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Tue 7/28
3:30 pm-9:15 pm
1 stop21h 45m
Istanbul
Thu 8/27
1:55 pm-1:25 pm
1 stop31h 30m
$1,093
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 7/25
7:05 pm-2:05 am
2 stops23h 00m
Istanbul
Thu 8/27
1:55 pm-1:25 pm
1 stop31h 30m
$1,121
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 7/25
7:05 pm-9:15 pm
2 stops18h 10m
Istanbul
Tue 8/25
1:55 pm-8:39 am
2 stops26h 44m
$1,132
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/27
1:13 pm-9:25 pm
2 stops24h 12m
Istanbul
Sat 8/29
5:50 pm-1:25 pm
1 stop27h 35m
$1,136
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/6
5:36 pm-4:20 pm
2 stops14h 44m
Istanbul
Fri 7/17
4:25 am-5:24 pm
2 stops20h 59m
$1,163
Showing 1-10 of 21 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 June.
| 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 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 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
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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 34 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?
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 80% 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 $747.
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 Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 13h 51m.
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 June 22, 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.
Boarding
7.8
Comfort
7.7
Crew
8.4
Food
7.3
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Food
7.3
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Food
7.3
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Food
7.3
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Food
7.3
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Food
7.3
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Istanbul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Istanbul Airport?
Book flights to Istanbul Airport if you plan to visit one of these locationsYalova
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Other flights to Istanbul
Explore flights to Istanbul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 22, 2026.
St. Louis and Istanbul flights
Browse other St. Louis and Istanbul flight options. Last updated on June 22, 2026.
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Top 7 airlines flying from St. Louis to Istanbul
Discover the top 7 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 June 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$545 | Average$1,204 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$576 | Average$872 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$585 | Average$1,010 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$589 | Average$944 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$617 | Average$968 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$836 | Average$836 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$866 | Average$1,321 | FlexibilityNo cancel fee | On-time77% |