$528+ Cheap flights from St. Louis (STL) to Istanbul
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Oct 21 — Oct 281
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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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 September 21, 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 September 21, 2026.
This Air France deal was found by Cheapflights users on 9/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:33 pm -
2 stops18h 12m
Tue 12/87:15 am -
2 stops25h 50m
Deal found 9/19![Air France logo]()
$817
This KLM deal was found by Cheapflights users on 9/19. 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.
Tue 10/202:38 pm -
2 stops17h 42m
Thu 11/267:15 am -
2 stops24h 38m
Deal found 9/19![Multiple Airlines logo]()
$824
This KLM deal was found by Cheapflights users on 9/19. 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.
Tue 10/202:38 pm -
2 stops18h 27m
Thu 11/2612:55 pm -
2 stops18h 58m
Deal found 9/19![KLM logo]()
$826
This Gotogate deal was found by Cheapflights users on 9/19. 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 10/203:30 pm -
1 stop17h 25m
Thu 11/267:05 pm -
1 stop27h 40m
Deal found 9/19![Lufthansa logo]()
$839
This United deal was found by Cheapflights users on 9/21. 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.
Tue 12/11:17 pm -
2 stops24h 28m
Tue 12/87:05 pm -
1 stop27h 40m
Deal found 9/21![Multiple Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:15 am -
2 stops31h 30m
Sun 11/86:30 am -
1 stop16h 15m
Deal found 9/17![United Airlines logo]()
$885
This KLM deal was found by Cheapflights users on 9/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:17 pm -
2 stops17h 38m
Wed 12/237:15 am -
2 stops23h 55m
Deal found 9/18![Multiple Airlines logo]()
$888
This Air France deal was found by Cheapflights users on 9/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:22 pm -
2 stops17h 23m
Sat 10/316:00 pm -
2 stops31h 28m
Deal found 9/19![Multiple Airlines logo]()
$925
This Air France deal was found by Cheapflights users on 9/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:22 pm -
2 stops17h 23m
Sat 10/317:15 am -
2 stops22h 44m
Deal found 9/16![Air France logo]()
$938
This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/242:25 pm -
2 stops43h 05m
Sat 10/319:00 am -
2 stops40h 28m
Deal found 9/17![KLM logo]()
$946
This FlightHub deal was found by Cheapflights users on 9/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/169:50 am -
2 stops43h 05m
Tue 12/222:55 pm -
2 stops42h 21m
Deal found 9/20![British Airways logo]()
$946
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:30 pm -
1 stop13h 30m
Wed 10/145:40 am -
1 stop15h 45m
Deal found 9/17![Lufthansa logo]()
$968
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 September 21, 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 September 21, 2026.
This Air France deal was found by Cheapflights users on 9/21. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:05 pm -
2 stops14h 40m
Tue 12/87:15 am -
2 stops25h 50m
Deal found 9/21![Air France logo]()
$817
This KLM deal was found by Cheapflights users on 9/19. 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.
Tue 10/202:38 pm -
2 stops17h 42m
Thu 11/267:15 am -
2 stops24h 38m
Deal found 9/19![Multiple Airlines logo]()
$824
This KLM deal was found by Cheapflights users on 9/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:35 pm -
2 stops19h 50m
Thu 11/129:00 am -
2 stops23h 56m
Deal found 9/21![KLM logo]()
$826
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:12 pm -
2 stops41h 43m
Wed 10/145:40 am -
3 stops23h 41m
Deal found 9/17![United Airlines logo]()
$1,036
This KLM deal was found by Cheapflights users on 9/19. 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.
Tue 10/202:38 pm -
2 stops18h 27m
Thu 11/2612:55 pm -
2 stops18h 58m
Deal found 9/19![KLM logo]()
$826
This United deal was found by Cheapflights users on 9/21. 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.
Tue 12/11:17 pm -
2 stops24h 28m
Tue 12/87:05 pm -
1 stop27h 40m
Deal found 9/21![Multiple Airlines logo]()
$854
This Air France deal was found by Cheapflights users on 9/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:22 pm -
2 stops17h 23m
Sat 10/316:00 pm -
2 stops31h 28m
Deal found 9/20![Multiple Airlines logo]()
$925
This KLM deal was found by Cheapflights users on 9/19. 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.
Sat 10/242:25 pm -
2 stops43h 05m
Sat 10/319:00 am -
2 stops40h 28m
Deal found 9/19![KLM logo]()
$946
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 9/2611:35 am -
2 stops17h 25m
Wed 10/215:40 am -
1 stop15h 45m
Deal found 9/18![United Airlines logo]()
$1,139
This KLM deal was found by Cheapflights users on 9/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/103:45 pm -
2 stops20h 40m
Sat 1/1612:55 pm -
2 stops28h 57m
Deal found 9/20![KLM logo]()
$957
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 9/2611:35 am -
2 stops17h 25m
Mon 10/191:55 pm -
1 stop31h 30m
Deal found 9/18![United Airlines logo]()
$1,159
This Etihad Airways deal was found by Cheapflights users on 9/19. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:27 am -
2 stops45h 08m
Sat 10/31:45 pm -
2 stops38h 59m
Deal found 9/19![Multiple Airlines logo]()
$1,107
This KLM deal was found by Cheapflights users on 9/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:10 pm -
2 stops20h 50m
Sat 10/3112:55 pm -
2 stops36h 33m
Deal found 9/18![KLM logo]()
$1,014
This Expedia deal was found by Cheapflights users on 9/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:05 pm -
2 stops18h 40m
Tue 12/88:35 am -
2 stops39h 51m
Deal found 9/19![Multiple Airlines logo]()
$1,210
This Mytrip deal was found by Cheapflights users on 9/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:40 pm -
2 stops18h 30m
Thu 10/1512:35 am -
3 stops27h 45m
Deal found 9/18![Multiple Airlines logo]()
$1,535
Last-minute flights from St. Louis to IstanbulDiscover last-minute flight deals from St. Louis to Istanbul. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Istanbul. Data last updated September 21, 2026 and is based on user searches.
This Lufthansa deal was found by Cheapflights users on 9/17. 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 9/223:30 pm -
1 stop21h 45m
Tue 9/291:55 pm -
1 stop31h 30m
Deal found 9/17![Lufthansa logo]()
$1,024
This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:10 pm -
2 stops20h 50m
Sat 10/3112:55 pm -
2 stops36h 33m
Deal found 9/17![KLM logo]()
$1,014
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:30 pm -
1 stop13h 30m
Tue 10/135:40 am -
1 stop15h 45m
Deal found 9/17![Lufthansa logo]()
$1,025
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:30 pm -
1 stop13h 30m
Wed 10/145:40 am -
1 stop15h 45m
Deal found 9/17![Lufthansa logo]()
$1,029
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:30 pm -
1 stop13h 30m
Wed 10/145:40 am -
1 stop15h 45m
Deal found 9/17![Lufthansa logo]()
$968
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:35 am -
2 stops21h 20m
Wed 10/145:40 am -
3 stops23h 41m
Deal found 9/17![United Airlines logo]()
$1,030
This KLM deal was found by Cheapflights users on 9/19. 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.
Tue 10/202:38 pm -
2 stops17h 42m
Thu 11/267:15 am -
2 stops24h 38m
Deal found 9/19![Multiple Airlines logo]()
$824
This KLM deal was found by Cheapflights users on 9/19. 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.
Tue 10/202:38 pm -
2 stops18h 27m
Thu 11/2612:55 pm -
2 stops18h 58m
Deal found 9/19![KLM logo]()
$826
This Gotogate deal was found by Cheapflights users on 9/19. 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 10/203:30 pm -
1 stop17h 25m
Thu 11/267:05 pm -
1 stop27h 40m
Deal found 9/19![Lufthansa logo]()
$839
This Air France deal was found by Cheapflights users on 9/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:22 pm -
2 stops17h 23m
Sat 10/316:00 pm -
2 stops31h 28m
Deal found 9/19![Multiple Airlines logo]()
$925
This Air France deal was found by Cheapflights users on 9/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:22 pm -
2 stops17h 23m
Sat 10/317:15 am -
2 stops22h 44m
Deal found 9/16![Air France logo]()
$938
This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/242:25 pm -
2 stops43h 05m
Sat 10/319:00 am -
2 stops40h 28m
Deal found 9/17![KLM logo]()
$946
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 September 21, 2026.
Search for one-way flight options from St. Louis to Istanbul. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Sun 9/2710:20 am -
3 stops25h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Sun 9/2710:20 am -
3 stops27h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$529
This FlightHub deal was found by Cheapflights users on 9/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am -
1 stop22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Turkish Airlines logo]()
$721
This Mytrip deal was found by Cheapflights users on 9/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:40 pm -
2 stops21h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$733
This KAYAK deal was found by Cheapflights users on 9/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:20 pm -
2 stops16h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Lufthansa logo]()
$736
This British Airways deal was found by Cheapflights users on 9/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:40 pm -
1 stop13h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![British Airways logo]()
$738
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Wed 9/307:30 am -
3 stops29h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![United Airlines logo]()
$742
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Sat 9/2610:27 am -
2 stops22h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![United Airlines logo]()
$802
This Turkish Airlines deal was found by Cheapflights users on 9/21. 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 9/268:00 am -
1 stop22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Turkish Airlines logo]()
$820
This KLM deal was found by Cheapflights users on 9/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:52 pm -
2 stops17h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![KLM logo]()
$2,826
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 (TR5). 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 September 21, 2026.
Round-trip from | $817 (Air France) |
|---|---|
One-way from | $528 (Kiwi.com) |
Popular in | June |
Cheapest in | December |
Average price | $1,001 |
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 7,457,451 searches. Data last updated September 21, 2026.
Use the filters below to find and compare flights from St. Louis to Istanbul that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Sun 9/27
10:20 am-7:30 pm
3 stops25h 10m
Istanbul
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$528
St. LouisIstanbul
STL Lambert-St Louis - SAW Istanbul Sabiha Gokcen
STLSAW
Lambert-St Louis
Sun 9/27
10:20 am-9:30 pm
3 stops27h 10m
Istanbul Sabiha Gokcen
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$529
Quickest round-trip
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Sun 9/27
9:40 pm-7:15 pm
1 stop13h 35m
Istanbul
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$738
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Wed 9/30
7:30 am-9:25 pm
3 stops29h 55m
Istanbul
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$742
St. LouisIstanbul
STL Lambert-St Louis - SAW Istanbul Sabiha Gokcen
STLSAW
Lambert-St Louis
Wed 9/30
12:10 pm-2:10 pm
3 stops18h 00m
Istanbul Sabiha Gokcen
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$785
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Sat 9/26
10:27 am-5:05 pm
2 stops22h 38m
Istanbul
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$802
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Tue 12/1
6:05 pm-5:45 pm
2 stops14h 40m
Istanbul
Tue 12/8
7:15 am-12:05 am
2 stops25h 50m
$817
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Sat 9/26
8:00 am-2:50 pm
1 stop22h 50m
Istanbul
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$820
St. LouisIstanbul
STL Lambert-St Louis - IST Istanbul
STLIST
Lambert-St Louis
Tue 10/20
2:38 pm-4:20 pm
2 stops17h 42m
Istanbul
Thu 11/26
7:15 am-10:53 pm
2 stops24h 38m
$824
St. LouisIstanbul
STL Lambert-St Louis - SAW Istanbul Sabiha Gokcen
STLSAW
Lambert-St Louis
Wed 10/28
5:35 pm-9:25 pm
2 stops19h 50m
Istanbul Sabiha Gokcen
Thu 11/12
9:00 am-11:56 pm
2 stops23h 56m
$826
Showing 1-10 of 23 resultsSorted by cheapest first
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-TR5
STL-IST
STL-SAW
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
STL-TR5
STL-IST
STL-SAW
What is the cheapest month to book a flight from St. Louis to Istanbul?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Istanbul (average of $597). Flying from St. Louis to Istanbul 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?
Airfare is below average for this route at the moment.
St. Louis to Istanbul flights typically cost between $924 and $1,108 in December.The cheapest round-trip price found within the last 5 days was $817 on Air France (Dec 1-Dec 8).
How far ahead should I book a flight from St. Louis to Istanbul?
The price you pay for your flight from St. Louis to Istanbul may vary depending on when you book. For the best chance of a lower fare, look to book 22 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 September 21, 2026.
See what other customers who have flown with KLM,Delta, andTurkish Airlines from St. Louis to Istanbul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.8
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Boarding
7.8
Crew
8.4
Overall
7.8
Comfort
7.7
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
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.
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Alternative routes for St. Louis to Istanbul
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Complete your trip
Complete your trip to Istanbul by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Istanbul, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Istanbul flights
Browse other St. Louis and Istanbul flight options. Last updated on September 21, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$576 | Average$1,094 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$586 | Average$1,048 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$589 | Average$944 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$608 | Average$1,101 | 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% |