HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Istanbul

$461+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Istanbul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Istanbul are usually found in February or October, booked 32 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 June 12, 2025.

Round-trip from

$603
(Air France)

One-way from

$461
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,545
From Lambert-St Louis to Istanbul
Search Deals
One-way flight from Lambert-St Louis to Istanbul
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($214 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 12, 2025.

This Air France deal was found by Cheapflights users on 6/10. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:29 pmSTL - IST
2 stops18h 51mMultiple Airlines
Wed 9/174:20 amIST - STL
2 stops19h 40mMultiple Airlines
Deal found 6/10$603
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 8/128:00 amSTL - IST
2 stops29h 20mUnited Airlines
Wed 8/202:00 pmIST - STL
2 stops32h 33mUnited Airlines
Deal found 6/10$641
This Gurufare deal was found by Cheapflights users on 6/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:30 pmSTL - IST
2 stops45h 00mBritish Airways
Tue 1/207:35 amIST - STL
2 stops23h 14mBritish Airways
Deal found 6/11$669
This Expedia deal was found by Cheapflights users on 6/9. 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.
Sat 10/255:28 pmSTL - IST
2 stops45h 17mLufthansa
Sat 11/17:00 pmIST - STL
1 stop27h 55mLufthansa
Deal found 6/9$706
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Tue 8/121:30 pmSTL - IST
2 stops21h 25mAir Canada
Wed 8/209:20 pmIST - STL
2 stops30h 25mAir Canada
Deal found 6/11$754
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 7/232:15 pmSTL - IST
2 stops29h 10mDelta
Tue 8/124:20 amIST - STL
2 stops19h 46mDelta
Deal found 6/10$809
This Expedia deal was found by Cheapflights users on 6/9. 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.
Sun 9/141:00 pmSTL - SAW
2 stops16h 55mBritish Airways
Sun 10/263:50 pmSAW - STL
2 stops35h 18mBritish Airways
Deal found 6/9$950
This oojo deal was found by Cheapflights users on 6/12. 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.
Fri 8/296:00 amSTL - SAW
2 stops46h 10mQatar Airways
Mon 9/158:05 pmSAW - STL
2 stops50h 34mQatar Airways
Deal found 6/12$1,099
This oojo deal was found by Cheapflights users on 6/11. 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.
Fri 7/46:41 amSTL - IST
2 stops39h 39mQatar Airways
Tue 7/158:05 pmIST - STL
2 stops35h 54mQatar Airways
Deal found 6/11$1,206
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Mon 7/149:15 amSTL - SAW
2 stops31h 15mMultiple Airlines
Mon 7/211:00 pmSAW - STL
3 stops34h 16mMultiple Airlines
Deal found 6/11$1,218
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Tue 8/128:00 amSTL - IST
1 stop13h 45mTurkish Airlines
Wed 8/206:30 amIST - STL
1 stop17h 14mTurkish Airlines
Deal found 6/11$1,219
This lastminute.com deal was found by Cheapflights users on 6/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/43:42 pmSTL - SAW
2 stops17h 23mKLM
Wed 8/208:45 amSAW - STL
2 stops22h 38mKLM
Deal found 6/11$1,327

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 June 12, 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

Wed 8/6

1:29 pm-4:20 pm

2 stops18h 51m

Istanbul

Wed 9/17

4:20 am-4:00 pm

2 stops19h 40m

$603

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 8/12

8:00 am-9:20 pm

2 stops29h 20m

Istanbul

Wed 8/20

2:00 pm-2:33 pm

2 stops32h 33m

$641

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 10/25

5:28 pm-10:45 pm

2 stops45h 17m

Istanbul

Sat 11/1

7:00 pm-2:55 pm

1 stop27h 55m

$706

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 8/12

1:30 pm-6:55 pm

2 stops21h 25m

Istanbul

Wed 8/20

9:20 pm-7:45 pm

2 stops30h 25m

$754

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 7/23

2:15 pm-3:25 am

2 stops29h 10m

Istanbul

Tue 8/12

4:20 am-4:06 pm

2 stops19h 46m

$809

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sun 9/14

1:00 pm-1:55 pm

2 stops16h 55m

Istanbul Sabiha Gokcen

Sun 10/26

3:50 pm-7:08 pm

2 stops35h 18m

$950

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 8/29

7:41 pm-12:20 am

2 stops20h 39m

Istanbul

Wed 9/17

8:25 am-9:53 pm

2 stops21h 28m

$956

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Fri 8/29

6:00 am-12:10 pm

2 stops46h 10m

Istanbul Sabiha Gokcen

Mon 9/15

8:05 pm-2:39 pm

2 stops50h 34m

$1,099

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 7/4

6:41 am-6:20 am

2 stops39h 39m

Istanbul

Tue 7/15

8:05 pm-11:59 pm

2 stops35h 54m

$1,206

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 7/14

9:15 am-12:30 am

2 stops31h 15m

Istanbul Sabiha Gokcen

Mon 7/21

1:00 pm-3:16 pm

3 stops34h 16m

$1,218

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 18 results
1
2

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 June 9, 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 $1,374). 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 June 12, 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 June 12, 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
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

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
8.1
Very good
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

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
7,950 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

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
1,358 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

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
3,584 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

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
8,790 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

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 $641. Other airlines that can offer you cheap pricing are Lufthansa, from $706, and Air Canada, from $754. United Airlines is priced at 43% 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?

    $501 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 Emirates, with prices starting from $603 and $3,508, 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 $1,374). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$657Average$1,488FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$662Average$851FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$674Average$871FlexibilityNo cancel feeOn-time71%
DeltaCheapest$680Average$1,068FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$764Average$1,073FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$814Average$1,186FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$1,162Average$1,344FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.