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$577+ Cheap flights from St. Louis (STL) to Istanbul (IST)

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Istanbul are usually found in March or October, booked 73 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 (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 septiembre 16, 2025.

Round-trip from

$577
(Lufthansa)

Popular in

June

Cheapest in

March

Average price

$909
From Lambert-St Louis to Istanbul
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($221 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 16, 2025.

This Lufthansa deal was found by Cheapflights users on 9/15. 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.
mié. 11/53:50 pmSTL - IST
1 stop21h 55mLufthansa
mié. 11/196:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/15$577
This Lufthansa deal was found by Cheapflights users on 9/15. 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.
mié. 11/53:50 pmSTL - IST
1 stop21h 55mLufthansa
mar. 11/186:30 amIST - STL
2 stops20h 09mLufthansa
Deal found 9/15$613
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/193:50 pmSTL - IST
1 stop21h 55mLufthansa
mié. 12/36:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 9/14$616
This Lufthansa deal was found by Cheapflights users on 9/15. 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.
mié. 11/53:50 pmSTL - IST
1 stop21h 55mLufthansa
jue. 11/207:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/15$622
This United Airlines deal was found by Cheapflights users on 9/15. 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.
mié. 11/53:50 pmSTL - IST
1 stop21h 55mUnited Airlines
vie. 11/216:30 amIST - STL
1 stop16h 25mUnited Airlines
Deal found 9/15$625
This United Airlines deal was found by Cheapflights users on 9/15. 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.
lun. 11/36:43 pmSTL - IST
2 stops19h 02mUnited Airlines
mié. 11/196:30 amIST - STL
1 stop16h 25mUnited Airlines
Deal found 9/15$629
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/163:50 pmSTL - IST
1 stop17h 15mLufthansa
mar. 12/27:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 9/16$630

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 septiembre 16, 2025.
Use the filters below to find and compare flights from St. Louis to Istanbul Airport that are best for you.

Fly from

St. Louis

Fly to

Istanbul

Route

Depart

Return

Price

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mar. 11/18

6:30 am-5:39 pm

2 stops20h 09m

$613

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/16

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mié. 12/3

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 11/5

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

vie. 11/21

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 11/19

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mié. 12/3

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 11/18

12:31 pm-5:45 pm

2 stops20h 14m

Istanbul

mié. 12/3

6:30 am-1:55 pm

1 stop16h 25m

$626

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

lun. 11/17

12:31 pm-5:55 pm

2 stops20h 24m

Istanbul

mié. 12/3

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 11/4

1:35 pm-5:45 pm

2 stops19h 10m

Istanbul

mié. 11/19

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 11/4

1:35 pm-5:45 pm

2 stops19h 10m

Istanbul

vie. 11/21

6:30 am-1:55 pm

1 stop16h 25m

$629

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 Airport

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

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 September 12, 2025.

The best time to book flights from St. Louis to Istanbul Airport is 71 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, October is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $910). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,358). 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 septiembre 16, 2025.

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

How much does it cost to fly round-trip from St. Louis to Istanbul Airport?

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 septiembre 16, 2025.
Get a feel of what it's like to fly with Delta, Turkish Airlines, and Air Canada 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.
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
3,968 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
7,407 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
7,363 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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?

    If you book a flight to Istanbul from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Lambert-St Louis to Istanbul per day from 7 different airlines.

  • How long is the flight from St. Louis to Istanbul Airport?

    Airlines like Lufthansa and United Airlines fly from St. Louis to Istanbul Airport in about 21h 55m. The time it takes to get you to your destination can typically vary by up to . The distance from St. Louis to Istanbul Airport is about 5707 mi.

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

    Currently priced at $627, Air Canada will fly you from St. Louis to Istanbul Airport and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and British Airways - these airlines can fly you to your destination from $647 and $662, respectively. You may be able to fly from St. Louis to Istanbul Airport for 42% less than the average price by searching for these airlines.

  • 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 Airport?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $910). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,358). 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

Traveling to a place near Istanbul Airport?

Book flights to Istanbul Airport if you plan to visit one of these locations
Yalova

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Alternative routes for St. Louis to Istanbul

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Istanbul flights
St. Louis to Sabiha Gokcen flights
Kansas City to Sabiha Gokcen flights
Springfield to Istanbul flights

Top 7 airlines flying from St. Louis to Istanbul

Discover the top 7 airlines that operate flights from St. Louis to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$627Average$1,158FlexibilityNo cancel feeOn-time67%
KLMCheapest$647Average$909FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$662Average$798FlexibilityNo cancel feeOn-time70%
DeltaCheapest$687Average$1,099FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$718Average$1,059FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$760Average$1,115FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$1,162Average$1,348FlexibilityNo cancel feeOn-time77%

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