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Cheap flights from St. Louis to Istanbul from $629

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 7/28. 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
6:04 pm - 3:30 am
STL
-
IST
25h 26m
2 stops
Delta Logo
6:00 am - 8:42 pm
IST
-
STL
22h 42m
2 stops
$629Delta
Tue, Jul 28 - Wed, Aug 5
Delta Logo
6:04 pm - 3:30 am
STL
-
IST
25h 26m
2 stops
Delta Logo
6:00 am - 11:26 pm
IST
-
STL
25h 26m
2 stops
$630Delta
Mon, Jul 27 - Fri, Aug 7
Delta Logo
2:10 pm - 3:30 am
STL
-
IST
29h 20m
2 stops
Delta Logo
5:20 pm - 5:38 pm
IST
-
STL
32h 18m
2 stops
$639Delta
Mon, Aug 17 - Mon, Aug 24
Delta Logo
2:10 pm - 3:30 am
STL
-
IST
29h 20m
2 stops
Delta Logo
6:00 am - 8:31 pm
IST
-
STL
22h 31m
2 stops
$640Delta
Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
4:15 pm - 7:45 pm
STL
-
SAW
19h 30m
2 stops
Multiple Airlines Logo
8:50 am - 3:30 pm
SAW
-
STL
39h 40m
2 stops
$979Multiple Airlines
Mon, Oct 26 - Wed, Nov 4
KLM Logo
5:36 pm - 5:05 pm
STL
-
SAW
15h 29m
2 stops
KLM Logo
8:50 am - 9:09 pm
SAW
-
STL
20h 19m
2 stops
$1,064KLM
Thu, May 28 - Sat, Jun 6
Qatar Airways Logo
4:21 pm - 12:10 pm
STL
-
SAW
34h 49m
2 stops
Qatar Airways Logo
1:40 pm - 4:40 pm
SAW
-
STL
36h 00m
2 stops
$1,164Qatar Airways
Sun, Nov 1 - Sat, Nov 7
Multiple Airlines Logo
12:10 pm - 3:25 pm
STL
-
SAW
19h 15m
2 stops
Multiple Airlines Logo
5:55 pm - 6:42 pm
SAW
-
STL
32h 47m
2 stops
$1,359Multiple Airlines
Mon, Jul 6 - Mon, Aug 31
KLM Logo
6:04 pm - 9:00 pm
STL
-
SAW
18h 56m
2 stops
KLM Logo
8:50 am - 8:39 pm
SAW
-
STL
19h 49m
2 stops
$1,813KLM
Thu, May 28 - Mon, Jun 8
Iberia Logo
1:42 pm - 7:40 pm
STL
-
SAW
21h 58m
2 stops
Iberia Logo
10:00 am - 11:23 pm
SAW
-
STL
45h 23m
2 stops
$1,925Iberia
Mon, Jun 8 - Mon, Jun 15

Delta flights from St. Louis to Istanbul

Our best Delta deals on St. Louis to Istanbul flight tickets
Delta
Jul 28
STL6:04 pmLambert-St Louis
25h 26m
2 stops
IST3:30 amIstanbul
Aug 5
IST6:00 amIstanbul
22h 42m
2 stops
STL8:42 pmLambert-St Louis
$629
Delta
Jul 27
STL6:04 pmLambert-St Louis
25h 26m
2 stops
IST3:30 amIstanbul
Aug 7
IST6:00 amIstanbul
25h 26m
2 stops
STL11:26 pmLambert-St Louis
$630
Delta
Aug 17
STL2:10 pmLambert-St Louis
29h 20m
2 stops
IST3:30 amIstanbul
Aug 24
IST5:20 pmIstanbul
32h 18m
2 stops
STL5:38 pmLambert-St Louis
$639

United Airlines flights from St. Louis to Istanbul

Our best United Airlines deals on St. Louis to Istanbul flight tickets
United Airlines
May 16
STL7:11 pmLambert-St Louis
21h 04m
2 stops
IST12:15 amIstanbul
May 23
IST1:55 pmIstanbul
31h 30m
1 stop
STL1:25 pmLambert-St Louis
$1,578
United Airlines
May 16
STL1:05 pmLambert-St Louis
27h 10m
2 stops
IST12:15 amIstanbul
May 23
IST1:55 pmIstanbul
31h 30m
1 stop
STL1:25 pmLambert-St Louis
$1,612
United Airlines
May 16
STL1:05 pmLambert-St Louis
20h 10m
2 stops
IST5:15 pmIstanbul
May 23
IST1:55 pmIstanbul
31h 30m
1 stop
STL1:25 pmLambert-St Louis
$1,717

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Istanbul 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 11, 2026.
Use the filters below to find and compare flights from St. Louis to Istanbul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 7/28

6:04 pm-3:30 am

2 stops25h 26m

Istanbul

Wed 8/5

6:00 am-8:42 pm

2 stops22h 42m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 7/27

6:04 pm-3:30 am

2 stops25h 26m

Istanbul

Fri 8/7

6:00 am-11:26 pm

2 stops25h 26m

$630

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 8/17

2:10 pm-3:30 am

2 stops29h 20m

Istanbul

Mon 8/24

5:20 pm-5:38 pm

2 stops32h 18m

$639

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 8/17

2:10 pm-3:30 am

2 stops29h 20m

Istanbul

Wed 8/26

6:00 am-8:31 pm

2 stops22h 31m

$640

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 10/26

4:15 pm-7:45 pm

2 stops19h 30m

Istanbul Sabiha Gokcen

Wed 11/4

8:50 am-3:30 pm

2 stops39h 40m

$979
Quickest round-trip

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Thu 5/28

5:36 pm-5:05 pm

2 stops15h 29m

Istanbul Sabiha Gokcen

Sat 6/6

8:50 am-9:09 pm

2 stops20h 19m

$1,064

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sun 11/1

4:21 pm-12:10 pm

2 stops34h 49m

Istanbul Sabiha Gokcen

Sat 11/7

1:40 pm-4:40 pm

2 stops36h 00m

$1,164

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 7/6

12:10 pm-3:25 pm

2 stops19h 15m

Istanbul Sabiha Gokcen

Mon 8/31

5:55 pm-6:42 pm

2 stops32h 47m

$1,359

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Thu 5/28

6:04 pm-9:00 pm

2 stops18h 56m

Istanbul Sabiha Gokcen

Mon 6/8

8:50 am-8:39 pm

2 stops19h 49m

$1,813

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 6/8

1:42 pm-7:40 pm

2 stops21h 58m

Istanbul Sabiha Gokcen

Mon 6/15

10:00 am-11:23 pm

2 stops45h 23m

$1,925

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

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?

What is the cheapest month to fly to Istanbul?

In general, December is the cheapest month to fly from St. Louis to Istanbul. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $479. If you aren’t able to travel to Istanbul during the month of December, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $545.

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

You are more likely to see cheaper flights to Istanbul from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Istanbul for around $916 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Istanbul from St. Louis for as low as $732 on momondo.

Cheap St. Louis to Istanbul flight deals and tips

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

Fastest flight time

15h 29m

Direct flights

None
The fastest flight from St. Louis to Istanbul takes 15h 29m
There are no direct flights from St. Louis to Istanbul. There are no popular flight routes from St. Louis to Istanbul.
Search flight deals

Frequently asked questions about flying from St. Louis to Istanbul

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

    There are 5728.1 mi between Lambert-St Louis and Istanbul. In terms of flight time, this usually takes a little over 15h 29m.

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

    Prices for flights from Lambert-St Louis Airport to Istanbul were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Istanbul.

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

    The travel and health documents you'll need for your trip to Istanbul may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Istanbul. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Istanbul

Compare and see reviews for airlines that fly from St. Louis to Istanbul with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $545Free CancellationRating
7.1
11,665 reviews
Search American Airlines flights
British AirwaysPriceFrom $576Free CancellationRating
6.7
7,969 reviews
Search British Airways flights
LufthansaPriceFrom $585Free CancellationRating
6.8
7,992 reviews
Search Lufthansa flights
KLMPriceFrom $608Free CancellationRating
7.8
1,514 reviews
Search KLM flights
DeltaPriceFrom $613Free CancellationRating
7.9
8,453 reviews
Search Delta flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,700 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.4
4,358 reviews
Search Turkish Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Istanbul. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for St. Louis to Istanbul flights to just show those with flexible booking policies.

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?

Price alerts on flights to Istanbul from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Turkey

Fly into one of these airports located in Istanbul

Airports listed have a maximum distance of 20.9 mi from Istanbul
Istanbul Airport
Istanbul Sabiha Gokcen Airport