$496 Cheap Flights from Istanbul (IST) to St. Louis (STL)

View $496 flight on Tue, May 26, 2026Opens in a new window

Popular airlines from Istanbul Airport (IST) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Istanbul to St. Louis (IST-STL)

Prices were available within the past 7 days and start at $496 for one-way flights and $692 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Mar 12 - Mon, Mar 23
IST
Istanbul
STL
St. Louis
$692 Roundtrip, found 1 day ago
$692
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Mar 12 from Istanbul to St. Louis, returning Mon, Mar 23, priced at $692 found 1 day ago
British Airways
Sat, May 16 - Tue, May 26
IST
Istanbul
STL
St. Louis
$713 Roundtrip, found 1 day ago
$713
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, May 16 from Istanbul to St. Louis, returning Tue, May 26, priced at $713 found 1 day ago
British Airways
Mon, Jun 1 - Wed, Jul 1
IST
Istanbul
STL
St. Louis
$713 Roundtrip, found 2 days ago
$713
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Jun 1 from Istanbul to St. Louis, returning Wed, Jul 1, priced at $713 found 2 days ago
American Airlines
Mon, Feb 9 - Tue, Mar 10
IST
Istanbul
STL
St. Louis
$715 Roundtrip, found 1 hour ago
$715
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Mon, Feb 9 from Istanbul to St. Louis, returning Tue, Mar 10, priced at $715 found 1 hour ago
American Airlines
Mon, Jun 1 - Wed, Jul 1
IST
Istanbul
STL
St. Louis
$715 Roundtrip, found 2 days ago
$715
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 1 from Istanbul to St. Louis, returning Wed, Jul 1, priced at $715 found 2 days ago
British Airways
Mon, Feb 9 - Tue, Mar 10
IST
Istanbul
STL
St. Louis
$717 Roundtrip, found 1 hour ago
$717
Roundtrip
found 1 hour ago
Select British Airways flight, departing Mon, Feb 9 from Istanbul to St. Louis, returning Tue, Mar 10, priced at $717 found 1 hour ago
American Airlines
Sat, Mar 14 - Sat, Mar 21
IST
Istanbul
STL
St. Louis
$722 Roundtrip, found 1 day ago
$722
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Mar 14 from Istanbul to St. Louis, returning Sat, Mar 21, priced at $722 found 1 day ago
Delta
Wed, Oct 8 - Mon, Oct 20
IST
Istanbul
STL
St. Louis
$739 Roundtrip, found 5 days ago
$739
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 8 from Istanbul to St. Louis, returning Mon, Oct 20, priced at $739 found 5 days ago
KLM
Tue, Oct 7 - Mon, Oct 20
IST
Istanbul
STL
St. Louis
$831 Roundtrip, found 5 days ago
$831
Roundtrip
found 5 days ago
Select KLM flight, departing Tue, Oct 7 from Istanbul to St. Louis, returning Mon, Oct 20, priced at $831 found 5 days ago
Lufthansa
Mon, Feb 9 - Tue, Mar 10
IST
Istanbul
STL
St. Louis
$860 Roundtrip, found 1 hour ago
$860
Roundtrip
found 1 hour ago
Select Lufthansa flight, departing Mon, Feb 9 from Istanbul to St. Louis, returning Tue, Mar 10, priced at $860 found 1 hour ago

Find the cheapest month to fly from Istanbul (IST) to St. Louis (STL)

February is typically the cheapest month to fly

From $661 - $1,228 per traveler.

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,674
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,674

Frequently asked questions

How much does a flight from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $496 or cheap return flight from $692 from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from IST to STL is March, when there's less demand. Off-peak months are generally when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from IST to STL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to take a flight with a layover if you're traveling from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IST to STL?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from IST to STL are typically more expensive. For the cheapest rates, start looking for flights as early as possible. That said, if you're flexible with your travel plans, you may score a cheap fare right before your journey.
Is it cheaper to book an IST to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking an IST to STL flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place will take the stress out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Istanbul (IST) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can modify or cancel your IST to STL flight. However, additional fees may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Istanbul
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, American Airlines, British Airways, Delta, KLM, Lufthansa, Turkish Airlines, United
Roundtrip price
$691
Distance
5712 mi

Book with confidence

Book with confidence

Istanbul to St. Louis Flights

The cheapest times to fly from Istanbul to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Istanbul to St. Louis are during the month of March. You can find some of the cheapest flights from Istanbul to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Istanbul to St. Louis

Sunday is one of the best days to book for cheap flights from Istanbul to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Istanbul to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Istanbul to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $496 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Istanbul to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Istanbul to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Istanbul to St. Louis Flights

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