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Cheap flights from St. Louis to Istanbul from $349

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 7/6. 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.
Delta Logo
5:36 pm - 3:30 am
STL
-
IST
25h 54m
2 stops
Delta Logo
4:25 am - 10:15 pm
IST
-
STL
25h 50m
2 stops
$618Delta
Wed, Jul 1 - Wed, Jul 8
Delta Logo
6:10 pm - 3:30 am
STL
-
IST
25h 20m
2 stops
Delta Logo
4:25 am - 5:19 pm
IST
-
STL
20h 54m
2 stops
$683Delta
Mon, Jul 6 - Fri, Jul 17
Delta Logo
5:36 pm - 3:30 am
STL
-
IST
25h 54m
2 stops
Delta Logo
4:25 am - 11:53 pm
IST
-
STL
27h 28m
2 stops
$684Delta
Wed, Jul 8 - Wed, Jul 15
Delta Logo
3:39 pm - 3:30 am
STL
-
IST
27h 51m
2 stops
Delta Logo
4:25 am - 5:40 pm
IST
-
STL
21h 15m
2 stops
$693Delta
Sun, Aug 23 - Thu, Sep 24
Delta Logo
5:42 pm - 3:30 am
STL
-
IST
25h 48m
2 stops
Delta Logo
5:20 pm - 5:53 pm
IST
-
STL
32h 33m
2 stops
$738Delta
Sat, Aug 15 - Sun, Aug 23
Delta Logo
5:36 pm - 3:30 am
STL
-
IST
25h 54m
2 stops
Delta Logo
4:25 am - 5:24 pm
IST
-
STL
20h 59m
2 stops
$743Delta
Fri, Jul 10 - Wed, Jul 22
Delta Logo
6:10 pm - 3:30 am
STL
-
IST
25h 20m
2 stops
Delta Logo
4:25 am - 8:37 pm
IST
-
STL
24h 12m
2 stops
$753Delta
Mon, Jul 6 - Sat, Jul 18
Delta Logo
5:36 pm - 3:30 am
STL
-
IST
25h 54m
2 stops
Delta Logo
6:00 am - 11:53 pm
IST
-
STL
25h 53m
2 stops
$759Delta
Fri, Jul 3 - Mon, Jul 13
Lufthansa Logo
3:30 pm - 9:25 pm
STL
-
IST
21h 55m
1 stop
Lufthansa Logo
6:30 am - 6:38 pm
IST
-
STL
21h 08m
2 stops
$821Lufthansa
Wed, Oct 7 - Thu, Nov 26
Lufthansa Logo
3:30 pm - 9:25 pm
STL
-
IST
21h 55m
1 stop
Lufthansa Logo
7:05 pm - 1:45 pm
IST
-
STL
27h 40m
1 stop
$831Lufthansa
Wed, Oct 7 - Thu, Nov 26

Delta flights from St. Louis to Istanbul Airport

Our best Delta deals on St. Louis to Istanbul Airport flight tickets
Delta
Jul 1
STL5:36 pmLambert-St Louis
25h 54m
2 stops
IST3:30 amIstanbul
Jul 8
IST4:25 amIstanbul
25h 50m
2 stops
STL10:15 pmLambert-St Louis
$618
Delta
Jul 6
STL6:10 pmLambert-St Louis
25h 20m
2 stops
IST3:30 amIstanbul
Jul 17
IST4:25 amIstanbul
20h 54m
2 stops
STL5:19 pmLambert-St Louis
$683
Delta
Jul 8
STL5:36 pmLambert-St Louis
25h 54m
2 stops
IST3:30 amIstanbul
Jul 15
IST4:25 amIstanbul
27h 28m
2 stops
STL11:53 pmLambert-St Louis
$684

Lufthansa flights from St. Louis to Istanbul Airport

Our best Lufthansa deals on St. Louis to Istanbul Airport flight tickets
Lufthansa
Aug 5
STL7:05 pmLambert-St Louis
23h 00m
2 stops
IST2:05 amIstanbul
Aug 20
IST5:50 pmIstanbul
29h 48m
2 stops
STL3:38 pmLambert-St Louis
$844
Lufthansa
Aug 5
STL3:30 pmLambert-St Louis
21h 55m
1 stop
IST9:25 pmIstanbul
Aug 20
IST5:50 pmIstanbul
29h 48m
2 stops
STL3:38 pmLambert-St Louis
$856
Lufthansa
Aug 19
STL12:59 pmLambert-St Louis
19h 56m
2 stops
IST4:55 pmIstanbul
Sep 21
IST1:55 pmIstanbul
31h 30m
1 stop
STL1:25 pmLambert-St Louis
$936

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 May 26, 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 7/1

5:36 pm-3:30 am

2 stops25h 54m

Istanbul

Wed 7/8

4:25 am-10:15 pm

2 stops25h 50m

$618

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 7/6

6:10 pm-3:30 am

2 stops25h 20m

Istanbul

Fri 7/17

4:25 am-5:19 pm

2 stops20h 54m

$683

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 7/8

5:36 pm-3:30 am

2 stops25h 54m

Istanbul

Wed 7/15

4:25 am-11:53 pm

2 stops27h 28m

$684

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 8/23

3:39 pm-3:30 am

2 stops27h 51m

Istanbul

Thu 9/24

4:25 am-5:40 pm

2 stops21h 15m

$693

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 8/15

5:42 pm-3:30 am

2 stops25h 48m

Istanbul

Sun 8/23

5:20 pm-5:53 pm

2 stops32h 33m

$738

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 7/10

5:36 pm-3:30 am

2 stops25h 54m

Istanbul

Wed 7/22

4:25 am-5:24 pm

2 stops20h 59m

$743

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 7/6

6:10 pm-3:30 am

2 stops25h 20m

Istanbul

Sat 7/18

4:25 am-8:37 pm

2 stops24h 12m

$753

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 7/3

5:36 pm-3:30 am

2 stops25h 54m

Istanbul

Mon 7/13

6:00 am-11:53 pm

2 stops25h 53m

$759
Quickest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/7

3:30 pm-9:25 pm

1 stop21h 55m

Istanbul

Thu 11/26

6:30 am-6:38 pm

2 stops21h 08m

$821

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 10/7

3:30 pm-9:25 pm

1 stop21h 55m

Istanbul

Thu 11/26

7:05 pm-1:45 pm

1 stop27h 40m

$831

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 $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 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 $915 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 $667 on momondo.

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

You could potentially save up to 9% 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 May 2026, prices for St. Louis to Istanbul Airport flights are approximately 35% 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

14h 44m

Direct flights

None
The fastest flight from St. Louis to Istanbul Airport takes 14h 44m
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 14h 44m 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
11,637 reviews
Search American Airlines flights
British AirwaysPriceFrom $576Free CancellationRating
6.7
8,005 reviews
Search British Airways flights
LufthansaPriceFrom $585Free CancellationRating
6.8
8,032 reviews
Search Lufthansa flights
DeltaPriceFrom $589Free CancellationRating
7.9
8,425 reviews
Search Delta flights
KLMPriceFrom $608Free CancellationRating
7.8
1,522 reviews
Search KLM flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,753 reviews
Search United Airlines flights
Air CanadaPriceFrom $836Free CancellationRating
7.1
11,090 reviews
Search Air Canada flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.4
4,395 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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