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$376+ Cheap flights from St. Louis (STL) to Istanbul

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
1 adult, Economy
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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 enero 15, 2026.

Round-trip from

$520
(Mytrip)

One-way from

$376
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$663
From Lambert-St Louis to Istanbul
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One-way flight from Lambert-St Louis to Istanbul
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Highest demand for flights based on searches. 19% potential increase in price ($248 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 15, 2026.

This Mytrip deal was found by Cheapflights users on 1/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/44:05 pm
STL
-
IST
2 stops17h 00m
Multiple Airlines
mié. 3/116:30 am
IST
-
STL
1 stop16h 25m
Multiple Airlines
Deal found 1/14$520
This Mytrip deal was found by Cheapflights users on 1/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/43:50 pm
STL
-
IST
1 stop17h 15m
Lufthansa
mié. 3/116:30 am
IST
-
STL
1 stop16h 25m
Lufthansa
Deal found 1/14$523
This Booking.com deal was found by Cheapflights users on 1/14. 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.
mié. 3/184:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
mié. 4/155:40 am
IST
-
STL
1 stop15h 45m
Lufthansa
Deal found 1/14$526
This Mytrip deal was found by Cheapflights users on 1/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/13:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
mar. 3/177:00 pm
IST
-
STL
1 stop27h 55m
Lufthansa
Deal found 1/13$532
This Justfly.com deal was found by Cheapflights users on 1/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/184:50 pm
STL
-
IST
1 stop21h 55m
Lufthansa
lun. 4/133:45 am
IST
-
STL
2 stops25h 23m
Lufthansa
Deal found 1/13$534
This United Airlines deal was found by Cheapflights users on 1/13. 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.
lun. 3/167:00 pm
STL
-
IST
2 stops19h 45m
United Airlines
mié. 4/155:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 1/13$536
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/111:36 am
STL
-
IST
2 stops20h 49m
American Airlines
mar. 3/177:35 am
IST
-
STL
2 stops21h 46m
American Airlines
Deal found 1/13$538
This Justfly.com deal was found by Cheapflights users on 1/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/206:35 pm
STL
-
IST
2 stops23h 30m
Lufthansa
jue. 4/305:50 pm
IST
-
STL
1 stop27h 35m
Lufthansa
Deal found 1/14$539
This United Airlines deal was found by Cheapflights users on 1/13. 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. 3/154:05 pm
STL
-
IST
2 stops22h 40m
United Airlines
mié. 4/155:40 am
IST
-
STL
1 stop15h 45m
United Airlines
Deal found 1/13$540
This KLM deal was found by Cheapflights users on 1/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/181:39 pm
STL
-
SAW
2 stops19h 46m
KLM
mié. 4/158:50 am
SAW
-
STL
2 stops22h 43m
KLM
Deal found 1/14$608
This KLM deal was found by Cheapflights users on 1/13. 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.
mar. 2/101:00 pm
STL
-
SAW
2 stops19h 25m
KLM
mar. 2/179:00 am
SAW
-
STL
2 stops20h 43m
KLM
Deal found 1/13$609
This KLM deal was found by Cheapflights users on 1/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/105:04 pm
STL
-
SAW
2 stops19h 16m
KLM
sáb. 2/149:00 am
SAW
-
STL
2 stops20h 43m
KLM
Deal found 1/14$735

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 enero 15, 2026.
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

mié. 3/4

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

mié. 3/11

6:30 am-2:55 pm

1 stop16h 25m

$523

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 2/10

12:11 pm-5:45 pm

2 stops20h 34m

Istanbul

mar. 2/17

7:35 am-9:12 pm

2 stops22h 37m

$530

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 3/18

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mar. 4/14

3:45 am-9:08 pm

2 stops25h 23m

$534

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 3/15

4:05 pm-10:45 pm

2 stops22h 40m

Istanbul

mié. 4/15

5:40 am-1:25 pm

1 stop15h 45m

$540

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 3/17

7:40 am-5:45 pm

2 stops26h 05m

Istanbul

mié. 4/15

1:55 pm-3:24 pm

2 stops33h 29m

$544

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 3/17

8:17 am-5:45 pm

2 stops25h 28m

Istanbul

jue. 4/16

1:55 pm-3:24 pm

2 stops33h 29m

$544

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mar. 3/17

8:17 am-5:45 pm

2 stops25h 28m

Istanbul

mar. 4/14

1:55 pm-3:24 pm

2 stops33h 29m

$544

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 3/18

11:59 am-5:25 pm

2 stops21h 26m

Istanbul

mié. 4/15

8:15 am-10:14 pm

2 stops21h 59m

$545

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

lun. 3/16

7:00 pm-10:45 pm

2 stops19h 45m

Istanbul

vie. 4/17

1:55 pm-3:24 pm

2 stops33h 29m

$545

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

mié. 3/18

1:39 pm-5:25 pm

2 stops19h 46m

Istanbul Sabiha Gokcen

mié. 4/15

8:50 am-11:33 pm

2 stops22h 43m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 26 results
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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 January 9, 2026.

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 35 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, December is the cheapest month in which you can book a flight from St. Louis to Istanbul (average of $483). Flying from St. Louis to Istanbul 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.

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 enero 15, 2026.
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
7.9
Good
8,052 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
8,052 reviews
Delta
7.9
Good
8,052 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
4,176 reviews
Delta
7.9
Good
8,052 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
10,625 reviews
Delta
7.9
Good
8,052 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
7,718 reviews
Delta
7.9
Good
8,052 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
7,680 reviews
Delta
7.9
Good
8,052 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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?

    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 7 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.

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

    There are many flights that can get you from St. Louis to Istanbul in 17h 15m. Fly via Lufthansa, British Airways, or KLM to get the fastest option. The distance from St. Louis to Istanbul is about 5707 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $576. Other airlines that can offer you cheap pricing are Lufthansa, from $586, and KLM, from $617. British Airways is priced at 41% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Istanbul 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?

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Istanbul (average of $483). Flying from St. Louis to Istanbul 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

Browse thousands of different options on Cheapflights for your next trip

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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 enero 15, 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$687Average$1,099FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$1,200Average$1,336FlexibilityNo cancel feeOn-time77%

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