$610+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Jun 8 — Jun 151
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Istanbul
Cheapest
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 9, 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 9, 2026.
This Delta deal was found by Cheapflights users on 5/9. 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 7/276:04 pm
STL
- IST
2 stops25h 26m
Delta
Fri 8/76:00 am
IST
- STL
2 stops25h 26m
Delta
Deal found 5/9![Delta logo]()
$630
This Delta deal was found by Cheapflights users on 5/9. 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 10/2611:51 am
STL
- IST
2 stops22h 04m
Delta
Wed 11/45:55 pm
IST
- STL
2 stops32h 11m
Delta
Deal found 5/9![Delta logo]()
$639
This Delta deal was found by Cheapflights users on 5/8. 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 7/65:36 pm
STL
- IST
2 stops25h 54m
Delta
Fri 7/174:25 am
IST
- STL
2 stops26h 57m
Delta
Deal found 5/8![Delta logo]()
$684
This Delta deal was found by Cheapflights users on 5/5. 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 7/226:04 pm
STL
- IST
2 stops25h 26m
Delta
Wed 7/294:25 am
IST
- STL
2 stops27h 28m
Delta
Deal found 5/5![Delta logo]()
$685
This Delta deal was found by Cheapflights users on 5/8. 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
Wed 7/156:00 am
IST
- STL
2 stops22h 37m
Delta
Deal found 5/8![Delta logo]()
$689
This Delta deal was found by Cheapflights users on 5/5. 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 9/165:45 pm
STL
- IST
2 stops25h 45m
Delta
Tue 11/35:55 pm
IST
- STL
2 stops33h 06m
Delta
Deal found 5/5![Delta logo]()
$694
This Delta deal was found by Cheapflights users on 5/8. 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 7/134:25 am
IST
- STL
2 stops20h 54m
Delta
Deal found 5/8![Delta logo]()
$759
This Delta deal was found by Cheapflights users on 5/9. 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
Mon 8/316:00 am
IST
- STL
2 stops25h 01m
Delta
Deal found 5/9![Delta logo]()
$809
This Delta deal was found by Cheapflights users on 5/9. 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 9/113:42 pm
STL
- IST
2 stops27h 48m
Delta
Sun 9/276:00 am
IST
- STL
2 stops25h 37m
Delta
Deal found 5/9![Delta logo]()
$818
This Delta deal was found by Cheapflights users on 5/9. 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 10/164:13 pm
STL
- IST
2 stops27h 17m
Delta
Wed 10/216:00 am
IST
- STL
2 stops25h 18m
Delta
Deal found 5/9![Delta logo]()
$819
This IEagle deal was found by Cheapflights users on 5/6. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:27 pm
STL
- IST
2 stops24h 18m
Lufthansa
Tue 11/104:45 am
IST
- STL
2 stops18h 10m
Lufthansa
Deal found 5/6![Lufthansa logo]()
$830
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 9, 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 9, 2026.
This Delta deal was found by Cheapflights users on 5/9. 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 7/276:04 pm
STL
- IST
2 stops25h 26m
Delta
Fri 8/76:00 am
IST
- STL
2 stops25h 26m
Delta
Deal found 5/9![Delta logo]()
$630
This Qatar Airways deal was found by Cheapflights users on 5/6. 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.
Sun 11/13:23 pm
STL
- IST
2 stops30h 37m
Qatar Airways
Sat 11/78:10 pm
IST
- STL
2 stops36h 46m
Qatar Airways
Deal found 5/6![Qatar Airways logo]()
$1,013
This Delta deal was found by Cheapflights users on 5/9. 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 10/2611:51 am
STL
- IST
2 stops22h 04m
Delta
Wed 11/45:55 pm
IST
- STL
2 stops32h 11m
Delta
Deal found 5/9![Delta logo]()
$639
This Delta deal was found by Cheapflights users on 5/7. 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 7/225:36 pm
STL
- IST
2 stops25h 54m
Delta
Wed 7/296:00 am
IST
- STL
2 stops18h 46m
Delta
Deal found 5/7![Delta logo]()
$684
This Delta deal was found by Cheapflights users on 5/5. 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 9/165:45 pm
STL
- IST
2 stops25h 45m
Delta
Tue 11/35:55 pm
IST
- STL
2 stops33h 06m
Delta
Deal found 5/5![Delta logo]()
$694
This Delta deal was found by Cheapflights users on 5/7. 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 7/36:10 pm
STL
- IST
2 stops25h 20m
Delta
Mon 7/136:00 am
IST
- STL
2 stops25h 53m
Delta
Deal found 5/7![Delta logo]()
$759
This Delta deal was found by Cheapflights users on 5/9. 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
Mon 8/316:00 am
IST
- STL
2 stops25h 01m
Delta
Deal found 5/9![Delta logo]()
$809
This Delta deal was found by Cheapflights users on 5/7. 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 6/211:59 pm
STL
- IST
2 stops27h 21m
Delta
Mon 7/205:20 pm
IST
- STL
2 stops31h 59m
Delta
Deal found 5/7![Delta logo]()
$1,219
This Delta deal was found by Cheapflights users on 5/9. 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 5/2411:25 am
STL
- IST
2 stops29h 55m
Delta
Sun 5/316:00 am
IST
- STL
2 stops25h 21m
Delta
Deal found 5/9![Delta logo]()
$1,224
Last-minute flights from St. Louis to IstanbulDiscover last-minute flight deals from St. Louis to Istanbul. Data last updated May 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Istanbul. Data last updated May 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/8. 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 5/95:36 pm
STL
- IST
2 stops25h 54m
Delta
Sat 5/165:20 pm
IST
- STL
2 stops31h 23m
Delta
Deal found 5/8![Delta logo]()
$1,109
This KAYAK deal was found by Cheapflights users on 5/8. 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.
Sat 5/97:11 pm
STL
- IST
2 stops22h 54m
Lufthansa
Sat 5/165:50 pm
IST
- STL
1 stop27h 35m
Lufthansa
Deal found 5/8![Lufthansa logo]()
$1,306
This Delta deal was found by Cheapflights users on 5/8. 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 5/166:04 pm
STL
- IST
2 stops23h 16m
Delta
Sat 5/235:20 pm
IST
- STL
2 stops30h 55m
Delta
Deal found 5/8![Delta logo]()
$1,159
This Air France deal was found by Cheapflights users on 5/5. 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.
Mon 5/2511:25 am
STL
- IST
2 stops20h 55m
Multiple Airlines
Wed 6/104:25 am
IST
- STL
2 stops18h 49m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,214
This Air France deal was found by Cheapflights users on 5/6. 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.
Wed 5/2711:25 am
STL
- IST
2 stops20h 55m
Multiple Airlines
Sun 6/74:25 am
IST
- STL
2 stops20h 58m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,318
This Delta deal was found by Cheapflights users on 5/7. 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 5/285:36 pm
STL
- IST
2 stops23h 44m
Delta
Mon 6/85:20 pm
IST
- STL
2 stops32h 47m
Delta
Deal found 5/7![Delta logo]()
$1,224
This Delta deal was found by Cheapflights users on 5/7. 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 5/281:27 pm
STL
- IST
2 stops27h 53m
Delta
Sat 6/66:00 am
IST
- STL
2 stops19h 05m
Delta
Deal found 5/7![Delta logo]()
$1,259
This Delta deal was found by Cheapflights users on 5/8. 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 6/83:57 pm
STL
- IST
2 stops27h 33m
Delta
Sun 6/286:00 am
IST
- STL
2 stops22h 39m
Delta
Deal found 5/8![Delta logo]()
$1,289
This Delta deal was found by Cheapflights users on 5/7. 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 6/181:39 pm
STL
- IST
2 stops27h 41m
Delta
Mon 6/225:20 pm
IST
- STL
2 stops32h 03m
Delta
Deal found 5/7![Delta logo]()
$1,314
This Delta deal was found by Cheapflights users on 5/7. 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 6/211:59 pm
STL
- IST
2 stops27h 21m
Delta
Mon 7/205:20 pm
IST
- STL
2 stops31h 59m
Delta
Deal found 5/7![Delta logo]()
$1,219
This Delta deal was found by Cheapflights users on 5/7. 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 stops23h 44m
Delta
Tue 7/286:00 am
IST
- STL
2 stops25h 53m
Delta
Deal found 5/7![Delta logo]()
$1,239
This Delta deal was found by Cheapflights users on 5/8. 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 6/271:20 pm
STL
- IST
2 stops30h 10m
Delta
Mon 7/276:00 am
IST
- STL
2 stops25h 22m
Delta
Deal found 5/8![Delta logo]()
$1,309
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 9, 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 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:27 pm
STL
- IST
3 stops42h 03m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$610
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:27 pm
STL
- IST
3 stops42h 08m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$659
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/76:33 pm
STL
- IST
3 stops40h 57m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$662
This Delta deal was found by Cheapflights users on 5/8. 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 5/196:04 pm
STL
- IST
2 stops23h 16m
Delta
Deal found 5/8![Delta logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 5/266:00 am
STL
- IST
3 stops37h 40m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$751
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 5/185:33 pm
STL
- IST
3 stops50h 07m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$768
This Turkish Airlines deal was found by Cheapflights users on 5/9. 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.
Tue 5/197:45 am
STL
- IST
1 stop14h 00m
Turkish Airlines
Deal found 5/9![Turkish Airlines logo]()
$779
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 5/205:33 pm
STL
- IST
3 stops50h 07m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$829
This United Airlines deal was found by Cheapflights users on 5/8. 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 5/1912:15 pm
STL
- IST
2 stops25h 00m
United Airlines
Deal found 5/8![United Airlines logo]()
$845
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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $630 (Delta) |
One-way from | $610 (Kiwi.com) |
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 9, 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
Mon 7/27
6:04 pm-3:30 am
2 stops25h 26m
Istanbul
Fri 8/7
6:00 am-11:26 pm
2 stops25h 26m
$630
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 10/26
11:51 am-5:55 pm
2 stops22h 04m
Istanbul
Wed 11/4
5:55 pm-5:06 pm
2 stops32h 11m
$639
Quickest round-trip
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Wed 7/22
5:36 pm-3:30 am
2 stops25h 54m
Istanbul
Wed 7/29
6:00 am-4:46 pm
2 stops18h 46m
$684
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Wed 9/16
5:45 pm-3:30 am
2 stops25h 45m
Istanbul
Tue 11/3
5:55 pm-6:01 pm
2 stops33h 06m
$694
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Fri 7/3
6:10 pm-3:30 am
2 stops25h 20m
Istanbul
Mon 7/13
6:00 am-11:53 pm
2 stops25h 53m
$759
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Mon 7/6
6:10 pm-3:30 am
2 stops25h 20m
Istanbul
Mon 8/31
6:00 am-11:01 pm
2 stops25h 01m
$809
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sun 11/1
3:23 pm-7:00 am
2 stops30h 37m
Istanbul
Sat 11/7
8:10 pm-11:56 pm
2 stops36h 46m
$1,013
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sun 6/21
1:59 pm-1:20 am
2 stops27h 21m
Istanbul
Mon 7/20
5:20 pm-5:19 pm
2 stops31h 59m
$1,219
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sun 5/24
11:25 am-1:20 am
2 stops29h 55m
Istanbul
Sun 5/31
6:00 am-11:21 pm
2 stops25h 21m
$1,224
Cheapest one-way
St. LouisIstanbul
STL - IST
STLIST
Lambert-St Louis
Sat 6/6
5:27 pm-7:30 pm
3 stops42h 03m
$610
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Istanbul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Istanbul in 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
More
How far ahead should I book a flight from St. Louis to Istanbul Airport?
The best time to book flights from St. Louis to Istanbul Airport is 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 9, 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.
Comfort
7.9
Overall
7.9
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.9
Overall
7.9
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.9
Overall
7.9
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.9
Overall
7.9
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.9
Overall
7.9
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.9
Overall
7.9
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
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
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Istanbul flight routes
Other flight options
Other flights from St. Louis
Popular flights
Alternative routes for St. Louis to Istanbul
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Istanbul by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Istanbul by cabin class
Find flights from St. Louis to Istanbul, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 May 9, 2026.
St. Louis and Istanbul flights
Browse other St. Louis and Istanbul flight options. Last updated on May 9, 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 May 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$545 | Average$1,204 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$576 | Average$837 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$585 | Average$1,019 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$608 | Average$909 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$613 | Average$1,099 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$627 | Average$921 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$633 | Average$1,070 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$866 | Average$1,319 | FlexibilityNo cancel fee | On-time77% |