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$517+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
feb. 19 — feb. 261
tor. 2/19
tor. 2/26
1 adult, Economy
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Cheap 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 januar 20, 2026.

This Mytrip deal was found by Cheapflights users on 1/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/44:05 pm
STL
-
IST
2 stops17h 00m
Multiple Airlines
ons. 3/116:30 am
IST
-
STL
1 stop16h 25m
Multiple Airlines
Deal found 1/18$517
This Mytrip deal was found by Cheapflights users on 1/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/43:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
ons. 3/116:30 am
IST
-
STL
1 stop16h 25m
Lufthansa
Deal found 1/18$523
This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 2/1111:05 am
STL
-
IST
2 stops21h 20m
British Airways
tir. 2/172:55 pm
IST
-
STL
2 stops39h 17m
British Airways
Deal found 1/20$529
This oojo deal was found by Cheapflights users on 1/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/1811:59 am
STL
-
IST
2 stops21h 26m
British Airways
ons. 4/88:15 am
IST
-
STL
2 stops21h 59m
British Airways
Deal found 1/18$530
This FlightHub deal was found by Cheapflights users on 1/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/184:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
tir. 4/143:45 am
IST
-
STL
2 stops25h 23m
Lufthansa
Deal found 1/18$534
This Lufthansa deal was found by Cheapflights users on 1/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/184:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
tir. 4/73:45 am
IST
-
STL
2 stops17h 40m
Lufthansa
Deal found 1/18$544
This American Airlines deal was found by Cheapflights users on 1/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/1811:59 am
STL
-
IST
2 stops21h 26m
American Airlines
ons. 4/158:15 am
IST
-
STL
2 stops23h 33m
American Airlines
Deal found 1/18$545
This British Airways deal was found by Cheapflights users on 1/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 11/16:00 am
STL
-
IST
2 stops26h 25m
British Airways
man. 11/93:15 pm
IST
-
STL
2 stops38h 40m
British Airways
Deal found 1/18$547
This Booking.com deal was found by Cheapflights users on 1/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 4/206:35 pm
STL
-
IST
2 stops23h 30m
Lufthansa
lør. 5/21:55 pm
IST
-
STL
1 stop31h 30m
Lufthansa
Deal found 1/19$554
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 3/184:05 pm
STL
-
IST
2 stops46h 40m
United Airlines
ons. 4/155:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 1/19$555

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 januar 20, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$517
(Mytrip)

Popular in

June

Cheapest in

December

Average price

$674
Provider with most accurate pricing for Lambert-St Louis-Istanbul flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Istanbul flights.
Search Deals
From Lambert-St Louis to Istanbul
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($237 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 januar 20, 2026.
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

ons. 3/18

4:05 pm-10:45 pm

2 stops46h 40m

Istanbul

ons. 4/15

5:40 am-1:25 pm

1 stop15h 45m

$555

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

tor. 2/26

11:25 am-6:05 pm

2 stops21h 40m

Istanbul

man. 3/2

6:30 am-9:05 pm

2 stops23h 35m

$576

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

tor. 2/5

8:31 am-5:30 pm

2 stops23h 59m

Istanbul

man. 2/16

6:40 pm-9:12 pm

2 stops35h 32m

$579

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ons. 3/18

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

ons. 4/8

5:40 am-1:25 pm

1 stop15h 45m

$637

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

tor. 2/5

9:57 am-4:00 pm

1 stop21h 03m

Istanbul

man. 2/16

7:35 am-9:05 pm

1 stop22h 30m

$826

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

fre. 5/29

5:30 pm-4:20 pm

2 stops14h 50m

Istanbul

tir. 6/9

4:25 am-3:58 pm

2 stops19h 33m

$938

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

søn. 7/5

5:30 pm-1:20 am

2 stops23h 50m

Istanbul

ons. 7/15

4:25 am-11:37 pm

2 stops27h 12m

$943

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

man. 7/6

1:30 pm-4:20 pm

2 stops18h 50m

Istanbul

ons. 7/15

4:25 am-11:37 pm

2 stops27h 12m

$943

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice 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 Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on St. Louis-Istanbul Airport flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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 January 16, 2026.

The best time to book flights from St. Louis to Istanbul Airport is 35 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 $483). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,161). 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?

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 januar 20, 2026.
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
7.9
Good
8,080 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,080 reviews
Delta
7.9
Good
8,080 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Turkish Airlines
7.3
Good
4,196 reviews
Delta
7.9
Good
8,080 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,637 reviews
Delta
7.9
Good
8,080 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,732 reviews
Delta
7.9
Good
8,080 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,690 reviews
Delta
7.9
Good
8,080 reviews

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 British Airways fly from St. Louis to Istanbul Airport in about 21h 20m. The time it takes to get you to your destination can typically vary by up to 35m. The distance from St. Louis to Istanbul Airport is about 5707 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $576, British Airways will fly you from St. Louis to Istanbul Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and KLM - these airlines can fly you to your destination from $586 and $617, 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.

  • What are the cheapest airlines to fly from St. Louis to Istanbul Airport one-way?

    $367 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on United Airlines and Turkish Airlines, with prices starting from $458 and $660, respectively.

  • 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, December is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $483). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,161). 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.
Springfield to Istanbul flights
Kansas City to Istanbul flights
St. Louis to Sabiha Gokcen flights
Kansas City to Sabiha Gokcen 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 januar 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$576Average$748FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$586Average$1,090FlexibilityNo cancel feeOn-time76%
KLMCheapest$617Average$850FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$627Average$948FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$633Average$1,114FlexibilityNo cancel feeOn-time69%
DeltaCheapest$701Average$1,099FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$1,200Average$1,336FlexibilityNo cancel feeOn-time77%

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