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$523+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 (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 April 17, 2025.

Round-trip from

$940
(Kiwi.com)

One-way from

$523
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,186
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. 14% potential increase in price ($190 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 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 17, 2025.

This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:15 pmSTL - IST
2 stops23h 15mAir Canada
Wed 11/128:25 amIST - STL
2 stops40h 01mAir Canada
Deal found 4/16$668
This British Airways deal was found by Cheapflights users on 4/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:47 amSTL - SAW
2 stops21h 33mBritish Airways
Fri 10/317:30 pmSAW - STL
2 stops30h 33mBritish Airways
Deal found 4/16$723
This Travelocity deal was found by Cheapflights users on 4/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:27 pmSTL - IST
2 stops22h 38mBritish Airways
Fri 10/316:35 pmIST - STL
2 stops36h 50mBritish Airways
Deal found 4/16$728
This Travelocity deal was found by Cheapflights users on 4/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:15 pmSTL - IST
2 stops22h 10mMultiple Airlines
Wed 11/126:30 amIST - STL
1 stop16h 25mMultiple Airlines
Deal found 4/16$798
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/32:18 pmSTL - IST
2 stops29h 07mDelta
Fri 9/124:20 amIST - STL
2 stops26h 42mDelta
Deal found 4/16$800
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/33:15 pmSTL - IST
3 stops46h 30mUnited Airlines
Wed 11/126:30 amIST - STL
2 stops23h 29mUnited Airlines
Deal found 4/16$848
This Ovago deal was found by Cheapflights users on 4/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/33:30 pmSTL - IST
1 stop21h 50mLufthansa
Fri 9/126:10 amIST - STL
1 stop15h 20mLufthansa
Deal found 4/16$984
This oojo deal was found by Cheapflights users on 4/17. 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.
Wed 10/17:23 amSTL - SAW
2 stops44h 47mQatar Airways
Thu 10/168:05 pmSAW - STL
2 stops31h 56mQatar Airways
Deal found 4/17$1,002
This oojo deal was found by Cheapflights users on 4/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2810:17 amSTL - IST
2 stops41h 38mQatar Airways
Mon 5/51:45 pmIST - STL
2 stops30h 42mQatar Airways
Deal found 4/16$1,090
This oojo deal was found by Cheapflights users on 4/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/213:30 pmSTL - IST
1 stop15h 10mTurkish Airlines
Fri 10/317:35 amIST - STL
1 stop14h 43mTurkish Airlines
Deal found 4/16$1,234
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Thu 5/157:30 amSTL - SAW
3 stops30h 20mMultiple Airlines
Sat 5/247:55 amSAW - STL
2 stops20h 03mMultiple Airlines
Deal found 4/17$1,608
This KLM deal was found by Cheapflights users on 4/17. 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.
Fri 5/306:14 pmSTL - SAW
2 stops18h 51mKLM
Tue 6/178:50 amSAW - STL
2 stops19h 50mKLM
Deal found 4/17$2,555

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 17, 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

Mon 5/5

6:53 pm-4:35 pm

1 stop37h 42m

Istanbul

Fri 5/9

4:45 am-12:14 am

2 stops27h 29m

$940

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Fri 8/22

8:26 am-3:20 pm

2 stops22h 54m

Istanbul Sabiha Gokcen

Mon 9/8

3:00 pm-6:21 pm

2 stops35h 21m

$946

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 10/1

7:23 am-12:10 pm

2 stops44h 47m

Istanbul Sabiha Gokcen

Thu 10/16

8:05 pm-8:01 pm

2 stops31h 56m

$1,002

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 5/19

5:45 pm-3:25 am

2 stops25h 40m

Istanbul

Wed 6/4

4:20 am-4:47 pm

2 stops20h 27m

$1,014

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 4/28

10:17 am-11:55 am

2 stops41h 38m

Istanbul

Mon 5/5

1:45 pm-12:27 pm

2 stops30h 42m

$1,090

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 5/11

1:30 pm-9:20 pm

2 stops23h 50m

Istanbul

Wed 5/21

6:10 am-1:30 pm

1 stop15h 20m

$1,121

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 5/18

1:30 pm-4:30 pm

2 stops19h 00m

Istanbul

Sun 9/28

9:20 pm-7:57 pm

2 stops30h 37m

$1,155

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 5/11

3:30 pm-9:20 pm

1 stop21h 50m

Istanbul

Wed 5/21

6:10 am-1:30 pm

1 stop15h 20m

$1,218

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 4/28

3:40 pm-5:45 am

1 stop30h 05m

Istanbul

Mon 5/5

6:30 am-2:47 pm

1 stop16h 17m

$1,244

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Thu 5/15

7:30 am-9:50 pm

3 stops30h 20m

Istanbul Sabiha Gokcen

Sat 5/24

7:55 am-7:58 pm

2 stops20h 03m

$1,608

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 17 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 April 11, 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 $1,423). 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 17, 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.

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 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 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, 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 17, 2025.
Peruse reviews from past customers who have flown with Emirates, Delta and KLM from St. Louis to Istanbul to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.8

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.0
Very good
3,200 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.8

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Delta
8.0
Very good
7,916 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.8

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
KLM
7.8
Good
1,327 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.8

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qatar Airways
7.4
Good
3,554 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.8

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
United Airlines
7.4
Good
8,667 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.8

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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.

  • 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 $946. Other airlines that can offer you cheap pricing are Qatar Airways, from $1,002, and Delta, from $1,014. British Airways is priced at 17% 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?

    $927 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Qatar Airways and Turkish Airlines, with prices starting from $992 and $3,784, 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, 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 $1,423). 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

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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$680Average$1,058FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$710Average$1,000FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$718Average$871FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$764Average$1,124FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$878Average$1,212FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$970Average$1,550FlexibilityNo cancel feeOn-time67%
Turkish AirlinesCheapest$1,162Average$1,346FlexibilityNo cancel feeOn-time77%

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