$349+ 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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Jun 22 — Jun 291
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Istanbul with Cheapflights
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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 May 23, 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 May 23, 2026.
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:36 pm
STL
- IST
2 stops25h 54m
Delta
Wed 7/84:25 am
IST
- STL
2 stops25h 50m
Delta
Deal found 5/22![Delta logo]()
$618
This Delta deal was found by Cheapflights users on 5/21. 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.
Mon 7/66:10 pm
STL
- IST
2 stops25h 20m
Delta
Fri 7/174:25 am
IST
- STL
2 stops20h 54m
Delta
Deal found 5/21![Delta logo]()
$683
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:42 pm
STL
- IST
2 stops25h 48m
Delta
Mon 9/285:20 pm
IST
- STL
2 stops30h 37m
Delta
Deal found 5/19![Delta logo]()
$693
This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:54 pm
STL
- IST
2 stops29h 36m
Delta
Tue 7/145:20 pm
IST
- STL
2 stops29h 53m
Delta
Deal found 5/18![Delta logo]()
$697
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:05 am
STL
- IST
2 stops36h 25m
Delta
Wed 9/304:25 am
IST
- STL
2 stops24h 25m
Delta
Deal found 5/19![Delta logo]()
$699
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:05 am
STL
- IST
2 stops25h 15m
Delta
Wed 9/26:00 am
IST
- STL
2 stops25h 01m
Delta
Deal found 5/19![Delta logo]()
$743
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:25 am
STL
- IST
2 stops22h 55m
Delta
Sat 9/56:00 am
IST
- STL
2 stops22h 31m
Delta
Deal found 5/19![Delta logo]()
$753
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:25 am
STL
- IST
2 stops22h 55m
Delta
Sun 8/306:00 am
IST
- STL
2 stops25h 26m
Delta
Deal found 5/19![Delta logo]()
$754
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:36 pm
STL
- IST
2 stops25h 54m
Delta
Mon 7/136:00 am
IST
- STL
2 stops25h 53m
Delta
Deal found 5/20![Delta logo]()
$759
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:05 am
STL
- IST
2 stops25h 15m
Delta
Sat 9/56:00 am
IST
- STL
2 stops25h 01m
Delta
Deal found 5/19![Delta logo]()
$803
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:05 am
STL
- IST
2 stops25h 15m
Delta
Sun 8/306:00 am
IST
- STL
2 stops25h 26m
Delta
Deal found 5/19![Delta logo]()
$804
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 May 23, 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 May 23, 2026.
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:36 pm
STL
- IST
2 stops25h 54m
Delta
Wed 7/84:25 am
IST
- STL
2 stops25h 50m
Delta
Deal found 5/22![Delta logo]()
$618
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:57 pm
STL
- IST
2 stops27h 33m
Delta
Fri 7/174:25 am
IST
- STL
2 stops20h 54m
Delta
Deal found 5/22![Delta logo]()
$683
This Delta deal was found by Cheapflights users on 5/21. 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.
Tue 7/76:04 pm
STL
- IST
2 stops25h 26m
Delta
Tue 7/144:25 am
IST
- STL
2 stops20h 21m
Delta
Deal found 5/21![Delta logo]()
$683
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:13 pm
STL
- IST
2 stops27h 17m
Delta
Sun 10/185:20 pm
IST
- STL
2 stops30h 38m
Delta
Deal found 5/19![Delta logo]()
$753
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:36 pm
STL
- IST
2 stops25h 54m
Delta
Mon 7/136:00 am
IST
- STL
2 stops25h 53m
Delta
Deal found 5/20![Delta logo]()
$759
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:45 pm
STL
- IST
2 stops25h 45m
Delta
Sun 9/274:25 am
IST
- STL
2 stops26h 36m
Delta
Deal found 5/19![Delta logo]()
$808
This Delta deal was found by Cheapflights users on 5/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:45 pm
STL
- IST
2 stops25h 45m
Delta
Sat 10/176:00 am
IST
- STL
2 stops25h 18m
Delta
Deal found 5/23![Delta logo]()
$913
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:04 pm
STL
- IST
2 stops25h 26m
Delta
Mon 8/246:00 am
IST
- STL
2 stops25h 58m
Delta
Deal found 5/20![Delta logo]()
$944
Last-minute flights from St. Louis to IstanbulDiscover last-minute flight deals from St. Louis to Istanbul. Data last updated May 23, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Istanbul. Data last updated May 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:36 pm
STL
- IST
2 stops23h 44m
Delta
Sun 6/74:25 am
IST
- STL
2 stops27h 31m
Delta
Deal found 5/18![Delta logo]()
$1,224
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:04 pm
STL
- IST
2 stops23h 16m
Delta
Mon 6/85:20 pm
IST
- STL
2 stops32h 47m
Delta
Deal found 5/19![Delta logo]()
$1,223
This Delta deal was found by Cheapflights users on 5/21. 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.
Thu 5/2811:25 am
STL
- IST
2 stops20h 55m
Delta
Sat 6/66:00 am
IST
- STL
2 stops23h 09m
Delta
Deal found 5/21![Delta logo]()
$1,258
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:36 pm
STL
- IST
2 stops23h 44m
Delta
Mon 6/155:20 pm
IST
- STL
2 stops29h 32m
Delta
Deal found 5/20![Delta logo]()
$1,188
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/81:39 pm
STL
- IST
2 stops27h 41m
Delta
Sun 6/285:20 pm
IST
- STL
2 stops29h 32m
Delta
Deal found 5/20![Delta logo]()
$1,323
This Delta deal was found by Cheapflights users on 5/21. 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.
Sat 6/205:36 pm
STL
- IST
2 stops23h 44m
Delta
Sat 6/276:00 am
IST
- STL
2 stops19h 23m
Delta
Deal found 5/21![Delta logo]()
$1,358
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/211:55 pm
STL
- IST
2 stops29h 35m
Delta
Thu 7/236:00 am
IST
- STL
2 stops22h 37m
Delta
Deal found 5/22![Delta logo]()
$1,218
This FlightHub deal was found by Cheapflights users on 5/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/217:20 pm
STL
- IST
2 stops32h 35m
Qatar Airways
Sun 6/288:05 pm
IST
- STL
2 stops31h 16m
Qatar Airways
Deal found 5/22![Qatar Airways logo]()
$1,328
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:59 pm
STL
- IST
2 stops29h 31m
Delta
Tue 7/216:00 am
IST
- STL
2 stops22h 37m
Delta
Deal found 5/22![Delta logo]()
$1,301
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/275:36 pm
STL
- IST
2 stops14h 44m
Delta
Mon 7/275:20 pm
IST
- STL
2 stops31h 59m
Delta
Deal found 5/20![Delta logo]()
$1,288
This KLM deal was found by Cheapflights users on 5/18. 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 6/275:36 pm
STL
- IST
2 stops14h 44m
KLM
Mon 7/276:00 am
IST
- STL
2 stops19h 19m
KLM
Deal found 5/18![KLM logo]()
$1,354
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 May 23, 2026.
Search for one-way flight options from St. Louis to Istanbul. Find affordable one-way fares based on user searches. Data last updated May 23, 2026.
This Delta deal was found by Cheapflights users on 5/21. 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.
Mon 7/63:57 pm
STL
- IST
2 stops27h 33m
Delta
Deal found 5/21![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 5/21. 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 8/233:39 pm
STL
- IST
2 stops25h 41m
Delta
Deal found 5/21![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 5/21. 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.
Fri 8/286:05 am
STL
- IST
2 stops26h 15m
Delta
Deal found 5/21![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 5/21. 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.
Thu 8/276:05 am
STL
- IST
2 stops26h 15m
Delta
Deal found 5/21![Delta logo]()
$429
This FlightHub deal was found by Cheapflights users on 5/21. 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 8/263:30 pm
STL
- IST
1 stop17h 25m
Lufthansa
Deal found 5/21![Lufthansa logo]()
$477
This FlightHub deal was found by Cheapflights users on 5/21. 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.
Mon 7/63:30 pm
STL
- IST
1 stop13h 30m
Lufthansa
Deal found 5/21![Lufthansa logo]()
$478
This United Airlines deal was found by Cheapflights users on 5/21. 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 8/233:30 pm
STL
- IST
1 stop22h 05m
United Airlines
Deal found 5/21![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 5/21. 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 8/267:00 am
STL
- IST
3 stops30h 25m
United Airlines
Deal found 5/21![United Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Mon 9/78:08 pm
STL
- IST
3 stops57h 02m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$512
This United Airlines deal was found by Cheapflights users on 5/21. 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 8/283:30 pm
STL
- IST
1 stop13h 30m
United Airlines
Deal found 5/21![United Airlines logo]()
$540
This Kiwi.com deal was found by Cheapflights users on 5/21. 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.
Mon 7/63:30 pm
STL
- IST
3 stops23h 35m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$608
This Kiwi.com deal was found by Cheapflights users on 5/21. 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.
Mon 6/155:06 pm
STL
- IST
3 stops42h 24m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$636
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 May 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $618 (Delta) |
One-way from | $349 (Delta) |
Popular in | June |
Cheapest in | December |
Average price | $1,224 |
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 May 23, 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 7/1
5:36 pm-3:30 am
2 stops25h 54m
Istanbul
Wed 7/8
4:25 am-10:15 pm
2 stops25h 50m
$618
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/6
3:57 pm-3:30 am
2 stops27h 33m
Istanbul
Fri 7/17
4:25 am-5:19 pm
2 stops20h 54m
$683
Quickest round-trip
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Tue 7/7
6:04 pm-3:30 am
2 stops25h 26m
Istanbul
Tue 7/14
4:25 am-4:46 pm
2 stops20h 21m
$683
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sun 10/11
4:13 pm-3:30 am
2 stops27h 17m
Istanbul
Sun 10/18
5:20 pm-3:58 pm
2 stops30h 38m
$753
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Fri 7/3
5:36 pm-3:30 am
2 stops25h 54m
Istanbul
Mon 7/13
6:00 am-11:53 pm
2 stops25h 53m
$759
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sun 9/20
5:45 pm-3:30 am
2 stops25h 45m
Istanbul
Sun 9/27
4:25 am-11:01 pm
2 stops26h 36m
$808
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 10/10
5:45 pm-3:30 am
2 stops25h 45m
Istanbul
Sat 10/17
6:00 am-11:18 pm
2 stops25h 18m
$913
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Thu 7/23
6:04 pm-3:30 am
2 stops25h 26m
Istanbul
Mon 8/24
6:00 am-11:58 pm
2 stops25h 58m
$944
Cheapest one-way
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/6
3:57 pm-3:30 am
2 stops27h 33m
$349
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 8/24
5:25 pm-3:30 am
2 stops26h 05m
$379
Showing 1-10 of 19 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 May.
| 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 $607). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,381). 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 82% 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 $738.
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 May 23, 2026.
Get a feel of what it's like to fly with Delta,KLM, 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.
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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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Explore flights to Istanbul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 23, 2026.
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Top 8 airlines flying from St. Louis to Istanbul
Discover the top 8 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 May 23, 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$1,011 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$589 | Average$1,099 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$608 | Average$909 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$633 | Average$1,098 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$836 | Average$948 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$866 | Average$1,336 | FlexibilityNo cancel fee | On-time77% |