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$496+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Istanbul are usually found in October or February, 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 (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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$800
(Delta)

One-way from

$496
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,187
Provider with most accurate pricing for Lambert-St Louis-Istanbul flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Istanbul flights.
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From Lambert-St Louis to Istanbul
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One-way flight from Lambert-St Louis to Istanbul
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($193 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This Delta deal was found by Cheapflights users on 4/28. 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 8/35:23 pmSTL - IST
2 stops26h 02mDelta
Fri 9/124:20 amIST - STL
2 stops27h 19mDelta
Deal found 4/28$800
This United Airlines deal was found by Cheapflights users on 4/28. 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 8/35:30 pmSTL - IST
2 stops19h 50mUnited Airlines
Fri 9/126:10 amIST - STL
3 stops40h 09mUnited Airlines
Deal found 4/28$889
This Booking.com deal was found by Cheapflights users on 4/28. 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.
Sun 8/35:30 pmSTL - IST
2 stops19h 50mLufthansa
Sat 9/132:00 pmIST - STL
1 stop31h 30mLufthansa
Deal found 4/28$930
This United deal was found by Cheapflights users on 4/28. 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.
Sun 8/35:30 pmSTL - IST
2 stops19h 50mMultiple Airlines
Fri 9/126:10 amIST - STL
1 stop15h 20mMultiple Airlines
Deal found 4/28$946
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/62:20 pmSTL - IST
2 stops44h 15mQatar Airways
Tue 5/208:05 pmIST - STL
2 stops30h 28mQatar Airways
Deal found 4/28$994
This Air Canada deal was found by Cheapflights users on 4/28. 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.
Thu 5/81:30 pmSTL - IST
2 stops15h 35mAir Canada
Fri 5/306:10 amIST - STL
2 stops21h 48mAir Canada
Deal found 4/28$1,131
This FlightHub deal was found by Cheapflights users on 4/28. 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 5/53:43 pmSTL - IST
1 stop14h 57mTurkish Airlines
Thu 5/296:30 amIST - STL
1 stop24h 15mTurkish Airlines
Deal found 4/28$1,237
This Emirates deal was found by Cheapflights users on 4/28. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/33:20 pmSTL - IST
2 stops25h 50mEmirates
Fri 9/122:10 amIST - STL
2 stops27h 22mEmirates
Deal found 4/28$2,511
This Asiana Airlines deal was found by Cheapflights users on 4/28. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:11 pmSTL - IST
2 stops37h 59mAsiana Airlines
Sun 5/251:45 amIST - STL
2 stops35h 18mAsiana Airlines
Deal found 4/28$3,261
This AranGrant deal was found by Cheapflights users on 4/28. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:19 pmSTL - IST
2 stops35h 51mBritish Airways
Thu 6/58:15 amIST - STL
2 stops19h 20mBritish Airways
Deal found 4/28$10,954

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 April 29, 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

Sun 8/3

5:23 pm-3:25 am

2 stops26h 02m

Istanbul

Fri 9/12

4:20 am-11:39 pm

2 stops27h 19m

$800

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 8/3

5:30 pm-9:20 pm

2 stops19h 50m

Istanbul

Fri 9/12

6:10 am-2:19 pm

3 stops40h 09m

$889

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 8/3

5:30 pm-9:20 pm

2 stops19h 50m

Istanbul

Sat 9/13

2:00 pm-1:30 pm

1 stop31h 30m

$930

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 8/3

5:30 pm-9:20 pm

2 stops19h 50m

Istanbul

Fri 9/12

6:10 am-1:30 pm

1 stop15h 20m

$946

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/15

11:46 am-11:45 am

2 stops39h 59m

Istanbul

Mon 10/20

8:05 pm-8:23 pm

2 stops32h 18m

$994

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 5/8

1:30 pm-1:05 pm

2 stops15h 35m

Istanbul

Fri 5/30

6:10 am-7:58 pm

2 stops21h 48m

$1,131

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 7/13

8:00 am-5:45 am

1 stop13h 45m

Istanbul

Sun 8/3

2:25 pm-10:45 pm

1 stop16h 20m

$1,600

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 8/3

3:20 pm-1:10 am

2 stops25h 50m

Istanbul

Fri 9/12

2:10 am-9:32 pm

2 stops27h 22m

$2,511

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 5/8

6:11 pm-4:10 pm

2 stops37h 59m

Istanbul

Sun 5/25

1:45 am-5:03 am

2 stops35h 18m

$3,261

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 5/30

7:19 pm-3:10 pm

2 stops35h 51m

Istanbul

Thu 6/5

8:15 am-7:35 pm

2 stops19h 20m

$10,954

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 12 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*2 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Istanbul Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Istanbul Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.
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 April 25, 2025.

The best time to book flights from St. Louis to Istanbul Airport is 31 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, November is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $923). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,423). 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 April 29, 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.

Rainfall in Istanbul by month

Plan your trip to Istanbul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Istanbul Airport ranges from 0.4 - 3.9 inches per month. December is typically the wettest month, when rainfall can reach 3.9 in. July is typically the driest time to visit Istanbul Airport when rainfall is around 0.4 in.

Temperature in Istanbul by month

Plan your trip to Istanbul by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Istanbul Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 April 29, 2025.
Get a feel of what it's like to fly with Asiana Airlines, Emirates and Delta from St. Louis to Istanbul by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

7.7

Food

8.0

Overall

8.2

Reviews

1 / 20
4.0
Okay

Ramón,Feb 2025

ICN - SGN

The same as my experience from NYC to Incheon, just 1 EVER LASTING LONG LINE. No group calling out anything, just telling everyone to line up.
Asiana Airlines
8.2
Very good
442 reviews
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

7.7

Food

8.0

Overall

8.2

Reviews

1 / 20
4.0
Okay

Ramón,Feb 2025

ICN - SGN

The same as my experience from NYC to Incheon, just 1 EVER LASTING LONG LINE. No group calling out anything, just telling everyone to line up.
Emirates
8.0
Very good
3,213 reviews
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

7.7

Food

8.0

Overall

8.2

Reviews

1 / 20
4.0
Okay

Ramón,Feb 2025

ICN - SGN

The same as my experience from NYC to Incheon, just 1 EVER LASTING LONG LINE. No group calling out anything, just telling everyone to line up.
Delta
8.0
Very good
7,929 reviews
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

7.7

Food

8.0

Overall

8.2

Reviews

1 / 20
4.0
Okay

Ramón,Feb 2025

ICN - SGN

The same as my experience from NYC to Incheon, just 1 EVER LASTING LONG LINE. No group calling out anything, just telling everyone to line up.
Qatar Airways
7.4
Good
3,561 reviews
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

7.7

Food

8.0

Overall

8.2

Reviews

1 / 20
4.0
Okay

Ramón,Feb 2025

ICN - SGN

The same as my experience from NYC to Incheon, just 1 EVER LASTING LONG LINE. No group calling out anything, just telling everyone to line up.
United Airlines
7.4
Good
8,696 reviews
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

7.7

Food

8.0

Overall

8.2

Reviews

1 / 20
4.0
Okay

Ramón,Feb 2025

ICN - SGN

The same as my experience from NYC to Incheon, just 1 EVER LASTING LONG LINE. No group calling out anything, just telling everyone to line up.

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.

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

    Currently priced at $800, Delta will fly you from St. Louis to Istanbul Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $889 and $930, respectively. You may be able to fly from St. Louis to Istanbul Airport for 29% 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, November is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $923). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,423). 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 St. Louis?

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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.
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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$674Average$871FlexibilityNo cancel feeOn-time71%
DeltaCheapest$680Average$1,049FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$710Average$1,001FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$764Average$1,097FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$878Average$1,215FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$970Average$1,550FlexibilityNo cancel feeOn-time67%
Turkish AirlinesCheapest$1,162Average$1,342FlexibilityNo cancel feeOn-time77%

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