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Cheap flights from St. Louis to Istanbul from $467

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 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Istanbul

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:15 pm - 9:25 pm
STL
-
IST
17h 10m
2 stops
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$568United Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
8:15 pm - 9:25 pm
STL
-
IST
17h 10m
2 stops
United Airlines Logo
1:55 pm - 3:24 pm
IST
-
STL
33h 29m
2 stops
$577United Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
8:15 pm - 9:35 pm
STL
-
IST
17h 20m
2 stops
United Airlines Logo
1:55 pm - 8:25 am
IST
-
STL
26h 30m
2 stops
$579United Airlines
Sun, Apr 12 - Tue, Apr 28
United Airlines Logo
4:50 pm - 10:45 pm
STL
-
IST
21h 55m
1 stop
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$589United Airlines
Sun, Mar 22 - Wed, Apr 1
United Airlines Logo
3:30 pm - 10:45 pm
STL
-
IST
23h 15m
2 stops
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$593United Airlines
Tue, Mar 24 - Wed, Apr 1
Lufthansa Logo
4:50 pm - 10:45 pm
STL
-
IST
21h 55m
1 stop
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$594Lufthansa
Sun, Mar 22 - Fri, Apr 3
Lufthansa Logo
7:00 pm - 10:45 pm
STL
-
IST
19h 45m
2 stops
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$598Lufthansa
Mon, Mar 23 - Wed, Apr 1
United Airlines Logo
4:50 pm - 10:45 pm
STL
-
IST
21h 55m
1 stop
United Airlines Logo
5:40 am - 10:56 pm
IST
-
STL
25h 16m
2 stops
$599United Airlines
Sun, Mar 22 - Thu, Apr 2
Lufthansa Logo
8:15 pm - 9:35 pm
STL
-
IST
17h 20m
2 stops
Lufthansa Logo
5:50 pm - 1:25 pm
IST
-
STL
27h 35m
1 stop
$603Lufthansa
Sun, Apr 12 - Tue, Apr 28
United Airlines Logo
3:30 pm - 10:45 pm
STL
-
IST
23h 15m
2 stops
United Airlines Logo
5:40 am - 9:08 pm
IST
-
STL
23h 28m
2 stops
$604United Airlines
Tue, Mar 24 - Wed, Apr 1

United Airlines flights from St. Louis to Istanbul Airport

Our best United Airlines deals on St. Louis to Istanbul Airport flight tickets
United Airlines
Apr 15
STL8:15 pmLambert-St Louis
17h 10m
2 stops
IST9:25 pmIstanbul
Apr 22
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$568
United Airlines
Apr 15
STL8:15 pmLambert-St Louis
17h 10m
2 stops
IST9:25 pmIstanbul
Apr 22
IST1:55 pmIstanbul
33h 29m
2 stops
STL3:24 pmLambert-St Louis
$577
United Airlines
Apr 12
STL8:15 pmLambert-St Louis
17h 20m
2 stops
IST9:35 pmIstanbul
Apr 28
IST1:55 pmIstanbul
26h 30m
2 stops
STL8:25 amLambert-St Louis
$579

Lufthansa flights from St. Louis to Istanbul Airport

Our best Lufthansa deals on St. Louis to Istanbul Airport flight tickets
Lufthansa
Apr 27
STL6:35 pmLambert-St Louis
34h 25m
2 stops
IST1:00 pmIstanbul
May 4
IST3:45 amIstanbul
28h 12m
2 stops
STL11:57 pmLambert-St Louis
$571
Lufthansa
Mar 22
STL4:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Apr 3
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$594
Lufthansa
Mar 23
STL7:00 pmLambert-St Louis
19h 45m
2 stops
IST10:45 pmIstanbul
Apr 1
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$598

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 February 22, 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

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 4/15

8:15 pm-9:25 pm

2 stops17h 10m

Istanbul

Wed 4/22

5:40 am-1:25 pm

1 stop15h 45m

$568

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 4/15

8:15 pm-9:25 pm

2 stops17h 10m

Istanbul

Wed 4/22

1:55 pm-3:24 pm

2 stops33h 29m

$577

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 4/12

8:15 pm-9:35 pm

2 stops17h 20m

Istanbul

Tue 4/28

1:55 pm-8:25 am

2 stops26h 30m

$579

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 3/22

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 4/1

5:40 am-1:25 pm

1 stop15h 45m

$589

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 3/24

3:30 pm-10:45 pm

2 stops23h 15m

Istanbul

Wed 4/1

5:40 am-1:25 pm

1 stop15h 45m

$593

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 3/22

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Fri 4/3

5:40 am-1:25 pm

1 stop15h 45m

$594

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 3/23

7:00 pm-10:45 pm

2 stops19h 45m

Istanbul

Wed 4/1

5:40 am-1:25 pm

1 stop15h 45m

$598

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 3/22

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Thu 4/2

5:40 am-10:56 pm

2 stops25h 16m

$599

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 4/12

8:15 pm-9:35 pm

2 stops17h 20m

Istanbul

Tue 4/28

5:50 pm-1:25 pm

1 stop27h 35m

$603

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 3/24

3:30 pm-10:45 pm

2 stops23h 15m

Istanbul

Wed 4/1

5:40 am-9:08 pm

2 stops23h 28m

$604

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 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 $607. 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 $661.

How far in advance should I book a flight 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 $966 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 $707 on momondo.

Can stopping save me money on St. Louis to Istanbul Airport flights?

You could potentially save up to 36% on your flight if you consider stops on a St. Louis to Istanbul Airport flight.

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

As of February 2026, prices for St. Louis to Istanbul Airport flights are approximately 2% more expensive 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

15h 54m

Direct flights

None
The fastest flight from St. Louis to Istanbul Airport takes 15h 54m
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

  • 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 15h 54m 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
British AirwaysPriceFrom $576Free CancellationRating
6.7
7,757 reviews
Search British Airways flights
LufthansaPriceFrom $586Free CancellationRating
6.8
7,802 reviews
Search Lufthansa flights
DeltaPriceFrom $613Free CancellationRating
7.9
8,241 reviews
Search Delta flights
KLMPriceFrom $617Free CancellationRating
7.7
1,457 reviews
Search KLM flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,736 reviews
Search Air Canada flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,341 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.3
4,229 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.

An easier way to manage your Istanbul Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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