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$567+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Istanbul are usually found in October or March, booked 31 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap 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 agosto 14, 2025.

Round-trip from

$567
(Booking.com)

Popular in

June

Cheapest in

October

Average price

$1,022
From Lambert-St Louis to Istanbul
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($196 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Istanbul

Cheapest flights from St. Louis to Istanbul
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 agosto 14, 2025.

This Booking.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/23:50 pmSTL - IST
1 stop21h 55mLufthansa
mié. 11/126:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 8/14$567
This United Airlines deal was found by Cheapflights users on 8/13. 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.
dom. 11/23:50 pmSTL - IST
1 stop21h 55mUnited Airlines
mié. 11/126:30 amIST - STL
1 stop16h 25mUnited Airlines
Deal found 8/13$624
This United deal was found by Cheapflights users on 8/13. 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.
dom. 11/212:31 pmSTL - IST
2 stops25h 14mMultiple Airlines
mié. 11/126:30 amIST - STL
1 stop16h 25mMultiple Airlines
Deal found 8/13$628
This Air Canada deal was found by Cheapflights users on 8/14. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/234:05 pmSTL - IST
2 stops45h 40mMultiple Airlines
mar. 1/206:30 amIST - STL
2 stops41h 59mMultiple Airlines
Deal found 8/14$637
This Ovago deal was found by Cheapflights users on 8/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/237:06 pmSTL - IST
2 stops44h 19mBritish Airways
mar. 1/207:35 amIST - STL
2 stops23h 14mBritish Airways
Deal found 8/12$643
This Delta deal was found by Cheapflights users on 8/14. 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.
dom. 11/21:30 pmSTL - IST
2 stops29h 20mDelta
mar. 11/114:50 amIST - STL
2 stops26h 09mDelta
Deal found 8/14$647
This Orbitz deal was found by Cheapflights users on 8/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/2411:49 amSTL - IST
2 stops21h 06mLufthansa
mar. 12/97:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 8/13$648
This Lufthansa deal was found by Cheapflights users on 8/13. 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.
jue. 10/2312:25 pmSTL - IST
2 stops16h 40mLufthansa
vie. 11/76:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 8/13$669
This Expedia deal was found by Cheapflights users on 8/13. 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.
jue. 10/2312:25 pmSTL - IST
2 stops24h 55mMultiple Airlines
vie. 11/73:10 pmIST - STL
2 stops33h 19mMultiple Airlines
Deal found 8/13$685
This KLM deal was found by Cheapflights users on 8/13. 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.
lun. 11/241:30 pmSTL - SAW
2 stops18h 55mKLM
mar. 12/99:00 amSAW - STL
2 stops20h 35mKLM
Deal found 8/13$734
This Ovago deal was found by Cheapflights users on 8/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/710:36 amSTL - SAW
2 stops20h 44mBritish Airways
mié. 10/224:15 pmSAW - STL
2 stops31h 30mBritish Airways
Deal found 8/14$758
This KLM deal was found by Cheapflights users on 8/11. 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.
dom. 11/167:05 pmSTL - SAW
2 stops17h 15mKLM
mié. 11/199:00 amSAW - STL
2 stops21h 59mKLM
Deal found 8/11$784

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 agosto 14, 2025.
Use the filters below to find and compare flights from St. Louis to Istanbul that are best for you.

Fly from

St. Louis

Fly to

Istanbul

Route

Depart

Return

Price

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/2

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mié. 11/12

6:30 am-1:55 pm

1 stop16h 25m

$567

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/2

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mié. 11/12

6:30 am-1:55 pm

1 stop16h 25m

$624

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/2

12:31 pm-10:45 pm

2 stops25h 14m

Istanbul

mié. 11/12

6:30 am-1:55 pm

1 stop16h 25m

$628

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 1/18

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

lun. 2/16

3:10 pm-3:29 pm

2 stops57h 19m

$631

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

lun. 11/3

5:24 pm-10:45 pm

2 stops20h 21m

Istanbul

lun. 11/17

3:10 pm-3:29 pm

2 stops57h 19m

$635

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

lun. 11/24

10:00 am-5:55 pm

2 stops22h 55m

Istanbul

mar. 12/9

9:25 pm-3:29 pm

2 stops51h 04m

$635

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 1/18

4:05 pm-11:25 pm

2 stops22h 20m

Istanbul

lun. 2/16

9:25 pm-3:29 pm

2 stops51h 04m

$637

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/2

6:45 pm-12:50 am

2 stops21h 05m

Istanbul

mié. 11/12

7:35 am-8:23 pm

2 stops21h 48m

$637

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

dom. 1/18

7:05 pm-9:20 pm

2 stops17h 15m

Istanbul Sabiha Gokcen

lun. 2/16

9:00 am-8:39 pm

2 stops20h 39m

$734

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

lun. 11/24

1:30 pm-5:25 pm

2 stops18h 55m

Istanbul Sabiha Gokcen

mar. 12/9

9:00 am-8:35 pm

2 stops20h 35m

$734

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 16 results
1
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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.
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

How far ahead should I book a flight from St. Louis to Istanbul?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Istanbul. Price data was last updated on August 8, 2025.

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 31 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Istanbul?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Istanbul (average of $923). Flying from St. Louis to Istanbul in June is currently the most expensive (average of $1,359). 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.

What is the cheapest time of day to fly from STL to IST?

Find hourly flight availability from St. Louis to Istanbul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

It’s typically best to fly out from St. Louis to Istanbul at noon. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

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 agosto 14, 2025.
See what other customers who have flown with Delta, Turkish Airlines, and Air Canada 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.
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,940 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,949 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,317 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,266 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What airport do you fly from for flights from St. Louis to Istanbul?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Istanbul. You should not have trouble finding flights to Istanbul from Lambert-St Louis; the airport handles an average of 0 outbound flights to Istanbul per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the St. Louis airport to Istanbul. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • What are the cheapest airlines flying from St. Louis to Istanbul round-trip?

    Cheapflights users have booked flights from St. Louis to Istanbul round-trip from $627. Other airlines that can offer you cheap pricing are British Airways, from $662, and Delta, from $687. Air Canada is priced at 42% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from St. Louis to Istanbul that include hotel bookings?

    Yes. In addition to deals on St. Louis to Istanbul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Istanbul?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Istanbul.

  • Can I find deals for business class flights from St. Louis to Istanbul?

    Yes. Cheapflights offers flight deals from St. Louis to Istanbul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Istanbul?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Istanbul (average of $923). Flying from St. Louis to Istanbul in June is currently the most expensive (average of $1,359). 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.

See more FAQs

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.

Top 6 airlines flying from St. Louis to Istanbul

Discover the top 6 airlines that operate flights from St. Louis to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$627Average$970FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$662Average$798FlexibilityNo cancel feeOn-time70%
DeltaCheapest$687Average$1,126FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$735Average$1,054FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$814Average$1,115FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$1,162Average$1,352FlexibilityNo cancel feeOn-time77%

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