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$545+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
May 5 — May 121
Mon 5/5
Mon 5/12
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 30, 2025.

Round-trip from

$906
(Delta)

One-way from

$545
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,187
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 ($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 30, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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 11/22:18 pmSTL - IST
2 stops28h 52mDelta
Sun 11/165:10 amIST - STL
2 stops27h 29mDelta
Deal found 4/29$685
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Sun 11/21:27 pmSTL - IST
2 stops24h 18mLufthansa
Sun 11/166:30 amIST - STL
1 stop16h 25mLufthansa
Deal found 4/29$796
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 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 Gurufare deal was found by Cheapflights users on 4/29. 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.
Fri 8/227:23 amSTL - SAW
2 stops23h 57mBritish Airways
Mon 9/83:00 pmSAW - STL
2 stops33h 22mBritish Airways
Deal found 4/29$947
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.
Wed 10/157:23 amSTL - SAW
2 stops44h 47mQatar Airways
Mon 10/208:05 pmSAW - STL
2 stops32h 18mQatar Airways
Deal found 4/28$964
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 Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/161:30 pmSTL - SAW
2 stops21h 25mMultiple Airlines
Fri 5/3010:10 amSAW - STL
2 stops17h 48mMultiple Airlines
Deal found 4/28$1,225
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 KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/55:37 pmSTL - SAW
2 stops19h 28mKLM
Wed 5/2812:45 pmSAW - STL
2 stops19h 48mKLM
Deal found 4/28$1,874
This oojo deal was found by Cheapflights users on 4/29. 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.
Sun 11/25:15 amSTL - IST
2 stops51h 15mEmirates
Sat 11/151:50 amIST - STL
2 stops29h 16mEmirates
Deal found 4/29$2,030

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 30, 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 5/28

5:45 pm-3:25 am

2 stops25h 40m

Istanbul

Wed 6/4

4:20 am-8:39 pm

2 stops24h 19m

$906

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Fri 8/22

7:23 am-3:20 pm

2 stops23h 57m

Istanbul Sabiha Gokcen

Mon 9/8

3:00 pm-4:22 pm

2 stops33h 22m

$947

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 10/15

7:23 am-12:10 pm

2 stops44h 47m

Istanbul Sabiha Gokcen

Mon 10/20

8:05 pm-8:23 pm

2 stops32h 18m

$964

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 5/6

2:20 pm-6:35 pm

2 stops44h 15m

Istanbul

Tue 5/20

8:05 pm-6:33 pm

2 stops30h 28m

$994

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 5/28

6:30 am-9:20 pm

2 stops30h 50m

Istanbul

Wed 6/4

6:10 am-10:15 pm

3 stops24h 05m

$1,077

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 5/5

6:53 pm-4:35 pm

1 stop37h 42m

Istanbul

Wed 5/28

4:45 am-11:44 pm

2 stops26h 59m

$1,085

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 5/6

5:29 pm-9:20 pm

2 stops19h 51m

Istanbul

Tue 5/20

5:55 pm-1:30 pm

1 stop27h 35m

$1,108

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 - SAW

STLSAW

Lambert-St Louis

Fri 5/16

1:30 pm-6:55 pm

2 stops21h 25m

Istanbul Sabiha Gokcen

Fri 5/30

10:10 am-7:58 pm

2 stops17h 48m

$1,225

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 5/5

3:43 pm-2:40 pm

1 stop14h 57m

Istanbul

Thu 5/29

6:30 am-10:45 pm

1 stop24h 15m

$1,237

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 20 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 April 25, 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 30, 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 30, 2025.
Peruse reviews from past customers who have flown with Asiana Airlines, Emirates and Delta 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.
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Crew

8.5

Entertainment

7.7

Overall

8.2

Food

8.0

Comfort

8.0

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

Crew

8.5

Entertainment

7.7

Overall

8.2

Food

8.0

Comfort

8.0

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

Crew

8.5

Entertainment

7.7

Overall

8.2

Food

8.0

Comfort

8.0

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

Crew

8.5

Entertainment

7.7

Overall

8.2

Food

8.0

Comfort

8.0

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
3,563 reviews
Asiana Airlines
8.2
Very good
442 reviews

Boarding

8.3

Crew

8.5

Entertainment

7.7

Overall

8.2

Food

8.0

Comfort

8.0

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

Crew

8.5

Entertainment

7.7

Overall

8.2

Food

8.0

Comfort

8.0

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?

    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 $906. Other airlines that can offer you cheap pricing are British Airways, from $947, and Qatar Airways, from $964. Delta is priced at 20% 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?

    $583 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on British Airways and Turkish Airlines, with prices starting from $642 and $845, 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$623Average$1,068FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$674Average$871FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$710Average$991FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$764Average$1,113FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$878Average$1,215FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$970Average$1,555FlexibilityNo cancel feeOn-time67%
Turkish AirlinesCheapest$1,162Average$1,346FlexibilityNo cancel feeOn-time77%

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