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$408+ Cheap flights from St. Louis (STL) to Istanbul (IST)

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IST
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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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 (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 July 3, 2025.

Round-trip from

$643
(British Airways)

One-way from

$408
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$1,241
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. 16% potential increase in price ($220 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 July 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 July 3, 2025.

This British Airways deal was found by Cheapflights users on 7/2. 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 8/121:15 pmSTL - IST
2 stops19h 15mBritish Airways
Wed 8/205:35 pmIST - STL
2 stops30h 14mBritish Airways
Deal found 7/2$643
This United deal was found by Cheapflights users on 7/2. 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 11/93:50 pmSTL - IST
1 stop21h 55mMultiple Airlines
Sun 11/166:30 amIST - STL
1 stop16h 25mMultiple Airlines
Deal found 7/2$675
This KLM deal was found by Cheapflights users on 7/2. 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.
Tue 12/2311:46 amSTL - IST
2 stops20h 09mKLM
Tue 1/205:10 amIST - STL
2 stops24h 29mKLM
Deal found 7/2$719
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 8/125:11 pmSTL - IST
2 stops26h 14mDelta
Wed 8/205:05 pmIST - STL
2 stops32h 49mDelta
Deal found 7/1$739
This Expedia deal was found by Cheapflights users on 7/1. 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.
Wed 10/151:30 pmSTL - IST
2 stops21h 25mAir Canada
Tue 10/218:30 pmIST - STL
2 stops31h 08mAir Canada
Deal found 7/1$764
This Ovago deal was found by Cheapflights users on 7/1. 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.
Wed 10/153:30 pmSTL - IST
1 stop21h 50mLufthansa
Tue 10/215:55 pmIST - STL
1 stop27h 35mLufthansa
Deal found 7/1$847
This United Airlines deal was found by Cheapflights users on 7/2. 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 9/295:28 pmSTL - IST
2 stops19h 52mUnited Airlines
Sat 10/252:00 pmIST - STL
2 stops30h 13mUnited Airlines
Deal found 7/2$960

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 July 3, 2025.
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

Tue 8/12

1:15 pm-4:30 pm

2 stops19h 15m

Istanbul

Wed 8/20

5:35 pm-3:49 pm

2 stops30h 14m

$643

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 11/9

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Sun 11/16

6:30 am-1:55 pm

1 stop16h 25m

$675

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 12/23

11:46 am-4:55 pm

2 stops20h 09m

Istanbul

Tue 1/20

5:10 am-8:39 pm

2 stops24h 29m

$719

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 8/12

5:11 pm-3:25 am

2 stops26h 14m

Istanbul

Wed 8/20

5:05 pm-5:54 pm

2 stops32h 49m

$739

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/15

1:30 pm-6:55 pm

2 stops21h 25m

Istanbul

Tue 10/21

8:30 pm-7:38 pm

2 stops31h 08m

$764

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/15

3:30 pm-9:20 pm

1 stop21h 50m

Istanbul

Tue 10/21

5:55 pm-1:30 pm

1 stop27h 35m

$847

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 9/29

5:28 pm-9:20 pm

2 stops19h 52m

Istanbul

Sat 10/25

2:00 pm-12:13 pm

2 stops30h 13m

$960

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 9/18

2:30 pm-11:40 pm

3 stops25h 10m

$408

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 June 27, 2025.

The best time to book flights from St. Louis to Istanbul Airport is 31 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, November is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $923). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,362). 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 July 3, 2025.

It’s typically best to fly out from St. Louis to Istanbul Airport at noon. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

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 July 3, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines 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
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,845 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,678 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,207 reviews
Delta
8.0
Very good
7,970 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    Currently priced at $643, 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 American Airlines and Delta - these airlines can fly you to your destination from $691 and $739, 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.

  • 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, November is the cheapest month in which you can book a flight from St. Louis to Istanbul Airport (average of $923). Flying from St. Louis to Istanbul Airport in June is currently the most expensive (average of $1,362). 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 St. Louis?

Book flights to St. Louis 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.
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Springfield to Istanbul flights
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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$627Average$1,362FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$662Average$816FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$674Average$871FlexibilityNo cancel feeOn-time71%
DeltaCheapest$680Average$1,068FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$752Average$1,073FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$814Average$1,177FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$1,162Average$1,344FlexibilityNo cancel feeOn-time77%

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