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Cheap flights from St. Louis to Istanbul from $445

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Istanbul departing on 8/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Istanbul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
7:04 pm - 3:05 am
STL
-
IST
23h 01m
2 stops
Lufthansa Logo
4:45 am - 7:40 pm
IST
-
STL
23h 55m
2 stops
$800Lufthansa
Wed, Nov 11 - Thu, Nov 19
Lufthansa Logo
7:04 pm - 3:05 am
STL
-
IST
24h 01m
2 stops
Lufthansa Logo
4:45 am - 9:13 pm
IST
-
STL
25h 28m
2 stops
$801Lufthansa
Mon, Oct 26 - Tue, Nov 3
Lufthansa Logo
7:04 pm - 3:05 am
STL
-
IST
23h 01m
2 stops
Lufthansa Logo
6:30 am - 1:45 pm
IST
-
STL
16h 15m
1 stop
$803Lufthansa
Wed, Nov 11 - Fri, Nov 20
Lufthansa Logo
3:40 pm - 10:45 pm
STL
-
IST
22h 05m
1 stop
Lufthansa Logo
6:30 am - 1:45 pm
IST
-
STL
16h 15m
1 stop
$816Lufthansa
Wed, Nov 11 - Fri, Nov 20
United Airlines Logo
3:40 pm - 10:45 pm
STL
-
IST
22h 05m
1 stop
United Airlines Logo
6:30 am - 1:45 pm
IST
-
STL
16h 15m
1 stop
$830United Airlines
Wed, Nov 18 - Fri, Dec 18
United Airlines Logo
4:05 pm - 10:45 pm
STL
-
IST
21h 40m
2 stops
United Airlines Logo
6:30 am - 1:45 pm
IST
-
STL
16h 15m
1 stop
$838United Airlines
Wed, Nov 18 - Fri, Dec 18
United Airlines Logo
3:40 pm - 10:45 pm
STL
-
IST
22h 05m
1 stop
United Airlines Logo
6:30 am - 2:30 pm
IST
-
STL
17h 00m
2 stops
$840United Airlines
Wed, Nov 18 - Thu, Dec 17
Lufthansa Logo
3:40 pm - 10:45 pm
STL
-
IST
22h 05m
1 stop
Lufthansa Logo
4:45 am - 9:13 pm
IST
-
STL
25h 28m
2 stops
$845Lufthansa
Wed, Nov 18 - Mon, Dec 21
United Airlines Logo
4:05 pm - 10:45 pm
STL
-
IST
21h 40m
2 stops
United Airlines Logo
6:30 am - 4:56 pm
IST
-
STL
19h 26m
2 stops
$848United Airlines
Wed, Nov 18 - Fri, Dec 18
Lufthansa Logo
1:24 pm - 10:45 pm
STL
-
IST
24h 21m
2 stops
Lufthansa Logo
4:45 am - 9:13 pm
IST
-
STL
25h 28m
2 stops
$849Lufthansa
Wed, Nov 18 - Mon, Dec 21

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United Airlines flights from St. Louis to Istanbul Airport

Our best United Airlines deals on St. Louis to Istanbul Airport flight tickets
United Airlines
Aug 16
STL9:30 amLambert-St Louis
19h 30m
2 stops
IST1:00 pmIstanbul
Sep 1
IST1:55 pmIstanbul
28h 17m
2 stops
STL10:12 amLambert-St Louis
$921
United Airlines
Aug 16
STL3:30 pmLambert-St Louis
22h 05m
1 stop
IST9:35 pmIstanbul
Sep 1
IST1:55 pmIstanbul
28h 17m
2 stops
STL10:12 amLambert-St Louis
$922
United Airlines
Sep 3
STL7:00 amLambert-St Louis
22h 00m
3 stops
IST1:00 pmIstanbul
Sep 11
IST5:40 amIstanbul
23h 56m
2 stops
STL9:36 pmLambert-St Louis
$980

Lufthansa flights from St. Louis to Istanbul Airport

Our best Lufthansa deals on St. Louis to Istanbul Airport flight tickets
Lufthansa
Aug 21
STL1:00 pmLambert-St Louis
19h 55m
2 stops
IST4:55 pmIstanbul
Sep 3
IST3:45 amIstanbul
17h 40m
2 stops
STL1:25 pmLambert-St Louis
$909
Lufthansa
Aug 16
STL3:30 pmLambert-St Louis
17h 30m
1 stop
IST5:00 pmIstanbul
Aug 31
IST3:45 amIstanbul
17h 40m
2 stops
STL1:25 pmLambert-St Louis
$910
Lufthansa
Aug 21
STL1:00 pmLambert-St Louis
19h 55m
2 stops
IST4:55 pmIstanbul
Sep 3
IST3:45 amIstanbul
17h 40m
2 stops
STL1:25 pmLambert-St Louis
$918

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Istanbul Airport 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, momondo users made 832,500 searches. Data last updated July 10, 2026.
Use the filters below to find and compare flights from St. Louis to Istanbul Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/11

7:04 pm-3:05 am

2 stops23h 01m

Istanbul

Thu 11/19

4:45 am-7:40 pm

2 stops23h 55m

$800

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 10/26

7:04 pm-3:05 am

2 stops24h 01m

Istanbul

Tue 11/3

4:45 am-9:13 pm

2 stops25h 28m

$801

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/11

7:04 pm-3:05 am

2 stops23h 01m

Istanbul

Fri 11/20

6:30 am-1:45 pm

1 stop16h 15m

$803

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/11

3:40 pm-10:45 pm

1 stop22h 05m

Istanbul

Fri 11/20

6:30 am-1:45 pm

1 stop16h 15m

$816

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/18

3:40 pm-10:45 pm

1 stop22h 05m

Istanbul

Fri 12/18

6:30 am-1:45 pm

1 stop16h 15m

$830
Quickest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/18

4:05 pm-10:45 pm

2 stops21h 40m

Istanbul

Fri 12/18

6:30 am-1:45 pm

1 stop16h 15m

$838

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/18

3:40 pm-10:45 pm

1 stop22h 05m

Istanbul

Thu 12/17

6:30 am-2:30 pm

2 stops17h 00m

$840

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/18

3:40 pm-10:45 pm

1 stop22h 05m

Istanbul

Mon 12/21

4:45 am-9:13 pm

2 stops25h 28m

$845

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/18

4:05 pm-10:45 pm

2 stops21h 40m

Istanbul

Fri 12/18

6:30 am-4:56 pm

2 stops19h 26m

$848

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/18

1:24 pm-10:45 pm

2 stops24h 21m

Istanbul

Mon 12/21

4:45 am-9:13 pm

2 stops25h 28m

$849

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Istanbul from

How to get the cheapest flight ticket from St. Louis to Istanbul Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Istanbul Airport?

What is the cheapest month to fly to Istanbul Airport?

In general, December is the cheapest month to fly from St. Louis to Istanbul Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $597. If you don’t want to visit Istanbul Airport in December, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $671.

How far in advance should I book a flight from St. Louis to Istanbul Airport?

You are more likely to see cheaper flights to Istanbul Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul Airport for around $951 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul Airport from St. Louis for as low as $649 on momondo.

How have St. Louis to Istanbul Airport flight prices changed over time?

As of July 2026, prices for St. Louis to Istanbul Airport flights are approximately 39% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Istanbul Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Istanbul Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Istanbul Airport (STL to IST) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Istanbul Airport

Fastest flight time

17h 26m

Direct flights

None
The fastest flight from St. Louis to Istanbul Airport takes 17h 26m
There are no direct flights from St. Louis to Istanbul Airport. There are no popular flight routes from St. Louis to Istanbul Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to Istanbul Airport

  • How far is Lambert-St Louis to Istanbul by plane?

    Lambert-St Louis and Istanbul are 5707.5 mi apart from one another. Typically, this will take 17h 26m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Istanbul Airport?

    Prices for flights from Lambert-St Louis Airport to Istanbul Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Istanbul Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Istanbul Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Istanbul Airport.

  • What documentation or ID do you need to fly to Istanbul Airport?

    The travel and health documents required for your trip to Istanbul Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Istanbul Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Istanbul Airport?

Best airlines flying from St. Louis to Istanbul Airport

Compare and see reviews for airlines that fly from St. Louis to Istanbul Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $545Free CancellationRating
7.1
11,796 reviews
Search American Airlines flights
British AirwaysPriceFrom $576Free CancellationRating
6.7
8,105 reviews
Search British Airways flights
LufthansaPriceFrom $585Free CancellationRating
6.8
8,127 reviews
Search Lufthansa flights
DeltaPriceFrom $589Free CancellationRating
7.8
8,455 reviews
Search Delta flights
KLMPriceFrom $617Free CancellationRating
7.8
1,533 reviews
Search KLM flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,959 reviews
Search United Airlines flights
Air CanadaPriceFrom $836Free CancellationRating
7.1
11,323 reviews
Search Air Canada flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.4
4,441 reviews
Search Turkish Airlines flights

Traveling to a place near Istanbul?

Book flights to Istanbul if you plan to visit one of these locations
Yalova

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Istanbul?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Istanbul for you.

Can I find flights from St. Louis to Istanbul with flexible booking policies on momondo?

Flights from St. Louis to Istanbul with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Istanbul?

Once all potential St. Louis to Istanbul flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Istanbul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Istanbul, momondo offers a useful price alert feature which will track prices for flights to Istanbul from St. Louis and alert you when they change.

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