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Cheap flights from St. Louis to Istanbul from $577

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Istanbul departing on 11/5. 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

Lufthansa Logo
3:50 pm - 10:45 pmSTL-IST
21h 55m1 stop
Lufthansa Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$577Lufthansa
Find Deal
mié., nov. 5 - mié., nov. 19
Lufthansa Logo
3:50 pm - 10:45 pmSTL-IST
21h 55m1 stop
Lufthansa Logo
6:30 am - 5:39 pmIST-STL
20h 09m2 stops
$613Lufthansa
Find Deal
mié., nov. 5 - mar., nov. 18
United Airlines Logo
3:50 pm - 10:45 pmSTL-IST
21h 55m1 stop
United Airlines Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$625United Airlines
Find Deal
mié., nov. 5 - vie., nov. 21
United Airlines Logo
5:24 pm - 10:45 pmSTL-IST
20h 21m2 stops
United Airlines Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$629United Airlines
Find Deal
lun., nov. 3 - vie., nov. 21
Delta Logo
10:45 am - 3:50 amSTL-IST
32h 05m2 stops
Delta Logo
4:50 am - 5:09 pmIST-STL
21h 19m2 stops
$637Delta
Find Deal
dom., nov. 2 - mié., nov. 19
Air Canada Logo
4:05 pm - 5:45 pmSTL-IST
40h 40m2 stops
Air Canada Logo
1:40 pm - 3:29 pmIST-STL
34h 49m2 stops
$638Air Canada
Find Deal
lun., nov. 3 - vie., nov. 21
Air Canada Logo
4:05 pm - 6:05 pmSTL-IST
41h 00m2 stops
Air Canada Logo
1:50 pm - 3:29 pmIST-STL
58h 39m2 stops
$639Air Canada
Find Deal
sáb., nov. 15 - lun., dic. 1
Delta Logo
7:02 pm - 3:50 amSTL-IST
23h 48m2 stops
Delta Logo
4:50 am - 9:58 pmIST-STL
26h 08m2 stops
$680Delta
Find Deal
jue., nov. 13 - lun., dic. 1
KLM Logo
4:30 pm - 4:55 pmSTL-IST
15h 25m2 stops
KLM Logo
4:50 am - 4:07 pmIST-STL
20h 17m2 stops
$856KLM
Find Deal
dom., nov. 16 - dom., nov. 30
KLM Logo
4:10 pm - 4:05 pmSTL-IST
15h 55m2 stops
KLM Logo
4:20 am - 4:43 pmIST-STL
20h 23m2 stops
$883KLM
Find Deal
jue., oct. 2 - jue., oct. 9

Lufthansa flights from St. Louis to Istanbul Airport

Our best Lufthansa deals on St. Louis to Istanbul Airport flight tickets
Lufthansa
Nov 5
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Nov 19
IST6:30 amIstanbul
16h 25m
1 stop
STL1:55 pmLambert-St Louis
$577
Find similar
Lufthansa
Nov 5
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Nov 18
IST6:30 amIstanbul
20h 09m
2 stops
STL5:39 pmLambert-St Louis
$613
Find similar
Lufthansa
Nov 5
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Nov 18
IST7:00 pmIstanbul
27h 55m
1 stop
STL1:55 pmLambert-St Louis
$622
Find similar

United Airlines flights from St. Louis to Istanbul Airport

Our best United Airlines deals on St. Louis to Istanbul Airport flight tickets
United Airlines
Nov 5
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Nov 21
IST6:30 amIstanbul
16h 25m
1 stop
STL1:55 pmLambert-St Louis
$625
Find similar
United Airlines
Nov 3
STL5:24 pmLambert-St Louis
20h 21m
2 stops
IST10:45 pmIstanbul
Nov 21
IST6:30 amIstanbul
16h 25m
1 stop
STL1:55 pmLambert-St Louis
$629
Find similar
United Airlines
Nov 5
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Nov 20
IST6:30 amIstanbul
21h 17m
2 stops
STL6:47 pmLambert-St Louis
$635
Find similar

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 septiembre 17, 2025.
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

mié. 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mié. 11/19

6:30 am-1:55 pm

1 stop16h 25m

$577

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

mar. 11/18

6:30 am-5:39 pm

2 stops20h 09m

$613

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

mié. 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

vie. 11/21

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

lun. 11/3

5:24 pm-10:45 pm

2 stops20h 21m

Istanbul

vie. 11/21

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/2

10:45 am-3:50 am

2 stops32h 05m

Istanbul

mié. 11/19

4:50 am-5:09 pm

2 stops21h 19m

$637

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

lun. 11/3

4:05 pm-5:45 pm

2 stops40h 40m

Istanbul

vie. 11/21

1:40 pm-3:29 pm

2 stops34h 49m

$638

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

sáb. 11/15

4:05 pm-6:05 pm

2 stops41h 00m

Istanbul

lun. 12/1

1:50 pm-3:29 pm

2 stops58h 39m

$639

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

jue. 11/13

7:02 pm-3:50 am

2 stops23h 48m

Istanbul

lun. 12/1

4:50 am-9:58 pm

2 stops26h 08m

$680

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dom. 11/16

4:30 pm-4:55 pm

2 stops15h 25m

Istanbul

dom. 11/30

4:50 am-4:07 pm

2 stops20h 17m

$856

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

jue. 10/2

4:10 pm-4:05 pm

2 stops15h 55m

Istanbul

jue. 10/9

4:20 am-4:43 pm

2 stops20h 23m

$883

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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, March 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 $809. If you don’t want to visit Istanbul Airport in March, then you should wait until October to fly from St. Louis, when ticket prices are also cheap, with an average price of $892.

What is the cheapest day to depart on your flight to Istanbul Airport?

Our data shows that Wednesday is the least expensive day to fly to Istanbul Airport. Tickets to fly out on this day can be as low as $1,050. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,257.

What is the cheapest time of day to depart on your flight to Istanbul Airport?

At noon is the cheapest time of day to fly from St. Louis to Istanbul Airport when you can find flight prices for as low as $1,116. Flying to Istanbul Airport at noon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $1,190.

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 $1,086 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 $807 on momondo.

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

You could potentially save up to 22% on your flight if you consider stops on a St. Louis to Istanbul Airport flight.

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

Direct flights

None
There are no direct flights from St. Louis to Istanbul Airport. There are no popular flight routes from St. Louis to Istanbul Airport.
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  • 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 25m 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
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
KLMPriceFrom $647Free CancellationRating
7.8
1,386 reviews
Search KLM flights
British AirwaysPriceFrom $662Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
DeltaPriceFrom $687Free CancellationRating
7.9
7,961 reviews
Search Delta flights
LufthansaPriceFrom $718Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
United AirlinesPriceFrom $760Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $1,162Free CancellationRating
7.3
3,965 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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