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Cheap flights from St. Louis to Istanbul from $417

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 8/31. 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
8:40 am - 4:55 pm
STL
-
IST
24h 15m
2 stops
Lufthansa Logo
5:50 pm - 3:38 pm
IST
-
STL
29h 48m
2 stops
$871Lufthansa
Tue, Aug 11 - Tue, Aug 18
Lufthansa Logo
3:30 pm - 9:15 pm
STL
-
IST
21h 45m
1 stop
Lufthansa Logo
5:50 pm - 3:38 pm
IST
-
STL
29h 48m
2 stops
$880Lufthansa
Tue, Aug 11 - Tue, Aug 18
Lufthansa Logo
3:30 pm - 1:00 pm
STL
-
IST
13h 30m
1 stop
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$891Lufthansa
Wed, Aug 19 - Tue, Sep 22
Lufthansa Logo
3:30 pm - 9:25 pm
STL
-
IST
21h 55m
1 stop
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$893Lufthansa
Wed, Aug 19 - Tue, Sep 22
Lufthansa Logo
12:59 pm - 1:00 pm
STL
-
IST
16h 01m
2 stops
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$895Lufthansa
Tue, Sep 8 - Wed, Sep 16
Lufthansa Logo
8:40 am - 4:55 pm
STL
-
IST
24h 15m
2 stops
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$897Lufthansa
Wed, Aug 19 - Tue, Sep 22
Multiple Airlines Logo
12:10 pm - 1:00 pm
STL
-
IST
16h 50m
2 stops
Multiple Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$902Multiple Airlines
Wed, Aug 19 - Tue, Sep 22
KLM Logo
3:39 pm - 5:05 pm
STL
-
SAW
17h 26m
2 stops
KLM Logo
8:50 am - 8:35 pm
SAW
-
STL
19h 45m
2 stops
$993KLM
Wed, Aug 19 - Tue, Sep 22
KLM Logo
3:39 pm - 5:05 pm
STL
-
SAW
17h 26m
2 stops
KLM Logo
8:50 am - 7:58 pm
SAW
-
STL
19h 08m
2 stops
$994KLM
Mon, Sep 7 - Tue, Sep 15
KLM Logo
2:30 pm - 5:05 pm
STL
-
SAW
18h 35m
2 stops
KLM Logo
8:50 am - 8:49 pm
SAW
-
STL
19h 59m
2 stops
$995KLM
Wed, Sep 30 - Wed, Oct 7

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United Airlines flights from St. Louis to Istanbul

Our best United Airlines deals on St. Louis to Istanbul flight tickets
United Airlines
Sep 28
STL3:30 pmLambert-St Louis
17h 25m
1 stop
IST4:55 pmIstanbul
Oct 7
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$1,001
United Airlines
Sep 16
STL3:30 pmLambert-St Louis
21h 55m
1 stop
IST9:25 pmIstanbul
Oct 20
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$1,002

Lufthansa flights from St. Louis to Istanbul

Our best Lufthansa deals on St. Louis to Istanbul flight tickets
Lufthansa
Aug 11
STL8:40 amLambert-St Louis
24h 15m
2 stops
IST4:55 pmIstanbul
Aug 18
IST5:50 pmIstanbul
29h 48m
2 stops
STL3:38 pmLambert-St Louis
$871
Lufthansa
Aug 11
STL3:30 pmLambert-St Louis
21h 45m
1 stop
IST9:15 pmIstanbul
Aug 18
IST5:50 pmIstanbul
29h 48m
2 stops
STL3:38 pmLambert-St Louis
$880
Lufthansa
Aug 19
STL3:30 pmLambert-St Louis
13h 30m
1 stop
IST1:00 pmIstanbul
Sep 22
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$891

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 June 28, 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 8/11

8:40 am-4:55 pm

2 stops24h 15m

Istanbul

Tue 8/18

5:50 pm-3:38 pm

2 stops29h 48m

$871

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 8/11

3:30 pm-9:15 pm

1 stop21h 45m

Istanbul

Tue 8/18

5:50 pm-3:38 pm

2 stops29h 48m

$880
Quickest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 8/19

3:30 pm-1:00 pm

1 stop13h 30m

Istanbul

Tue 9/22

5:40 am-1:25 pm

1 stop15h 45m

$891

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 8/19

3:30 pm-9:25 pm

1 stop21h 55m

Istanbul

Tue 9/22

5:40 am-1:25 pm

1 stop15h 45m

$893

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 9/8

12:59 pm-1:00 pm

2 stops16h 01m

Istanbul

Wed 9/16

5:40 am-1:25 pm

1 stop15h 45m

$895

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 8/19

8:40 am-4:55 pm

2 stops24h 15m

Istanbul

Tue 9/22

5:40 am-1:25 pm

1 stop15h 45m

$897

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 8/19

12:10 pm-1:00 pm

2 stops16h 50m

Istanbul

Tue 9/22

5:40 am-1:25 pm

1 stop15h 45m

$902

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 8/19

3:39 pm-5:05 pm

2 stops17h 26m

Istanbul Sabiha Gokcen

Tue 9/22

8:50 am-8:35 pm

2 stops19h 45m

$993

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 9/7

3:39 pm-5:05 pm

2 stops17h 26m

Istanbul Sabiha Gokcen

Tue 9/15

8:50 am-7:58 pm

2 stops19h 08m

$994

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 9/30

2:30 pm-5:05 pm

2 stops18h 35m

Istanbul Sabiha Gokcen

Wed 10/7

8:50 am-8:49 pm

2 stops19h 59m

$995

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 November is also cheap. Prices for this month can be found on momondo for an average of $536.

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 $948 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 $649 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

13h 30m

Direct flights

None
The fastest flight from St. Louis to Istanbul takes 13h 30m
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 13h 30m.

  • 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
11,774 reviews
Search American Airlines flights
British AirwaysPriceFrom $576Free CancellationRating
6.7
8,079 reviews
Search British Airways flights
LufthansaPriceFrom $585Free CancellationRating
6.8
8,103 reviews
Search Lufthansa flights
DeltaPriceFrom $589Free CancellationRating
7.8
8,455 reviews
Search Delta flights
KLMPriceFrom $617Free CancellationRating
7.8
1,531 reviews
Search KLM flights
Air CanadaPriceFrom $836Free CancellationRating
7.1
11,269 reviews
Search Air Canada flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.4
4,424 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