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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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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
Wed, Nov 5 - Wed, 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
Wed, Nov 5 - Tue, 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
Wed, Nov 5 - Fri, 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
Mon, Nov 3 - Fri, 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
Sun, Nov 2 - Wed, 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
Mon, Nov 3 - Fri, 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
Sat, Nov 15 - Mon, Dec 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
Thu, Nov 13 - Mon, Dec 1
KLM Logo
5:15 pm - 9:20 pmSTL-SAW
19h 05m2 stops
KLM Logo
12:55 pm - 11:40 pmSAW-STL
19h 45m2 stops
$684KLM
Find Deal
Wed, Nov 5 - Thu, Nov 20
KLM Logo
7:02 pm - 9:20 pmSTL-SAW
17h 18m2 stops
KLM Logo
9:00 am - 8:25 amSAW-STL
32h 25m2 stops
$781KLM
Find Deal
Sun, Nov 16 - Mon, Dec 1

Lufthansa flights from St. Louis to Istanbul

Our best Lufthansa deals on St. Louis to Istanbul 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

Our best United Airlines deals on St. Louis to Istanbul 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 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 September 17, 2025.
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

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 11/19

6:30 am-1:55 pm

1 stop16h 25m

$577

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Tue 11/18

6:30 am-5:39 pm

2 stops20h 09m

$613

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Fri 11/21

6:30 am-1:55 pm

1 stop16h 25m

$625

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 11/3

5:24 pm-10:45 pm

2 stops20h 21m

Istanbul

Fri 11/21

6:30 am-1:55 pm

1 stop16h 25m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 11/2

10:45 am-3:50 am

2 stops32h 05m

Istanbul

Wed 11/19

4:50 am-5:09 pm

2 stops21h 19m

$637

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 11/3

4:05 pm-5:45 pm

2 stops40h 40m

Istanbul

Fri 11/21

1:40 pm-3:29 pm

2 stops34h 49m

$638

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 11/15

4:05 pm-6:05 pm

2 stops41h 00m

Istanbul

Mon 12/1

1:50 pm-3:29 pm

2 stops58h 39m

$639

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 11/13

7:02 pm-3:50 am

2 stops23h 48m

Istanbul

Mon 12/1

4:50 am-9:58 pm

2 stops26h 08m

$680

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 11/5

5:15 pm-9:20 pm

2 stops19h 05m

Istanbul Sabiha Gokcen

Thu 11/20

12:55 pm-11:40 pm

2 stops19h 45m

$684

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sun 11/16

7:02 pm-9:20 pm

2 stops17h 18m

Istanbul Sabiha Gokcen

Mon 12/1

9:00 am-8:25 am

2 stops32h 25m

$781

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

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, March 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 $809. If you aren’t able to travel to Istanbul during the month of March, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $892.

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

The cheapest day to depart from St. Louis to Istanbul is on a Wednesday when prices can be found for as low as $1,050. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Istanbul on Monday is $1,257.

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

Our most recent data shows that the best time of day to fly to Istanbul is at noon. Flights from St. Louis to Istanbul during this time can be as low as $1,116. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,190 on average. Flights to Istanbul from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $1,086 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 $807 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

Direct flights

None
There are no direct flights from St. Louis to Istanbul. There are no popular flight routes from St. Louis to Istanbul.
Search flight deals

  • 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 25m.

  • 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
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

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