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Cheap flights from St. Louis to Istanbul from $338

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 11/27. 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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Cheap round-trip flights

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Lufthansa Logo
11:22 am - 6:05 pmSTL-IST
21h 43m2 stops
Lufthansa Logo
6:30 am - 11:59 pmIST-STL
26h 29m2 stops
$558Lufthansa
Find Deal
Wed, Jan 14 - Sun, Feb 1
British Airways Logo
2:06 pm - 5:25 pmSTL-IST
18h 19m2 stops
British Airways Logo
7:35 am - 9:15 pmIST-STL
22h 40m2 stops
$565British Airways
Find Deal
Wed, Dec 31 - Tue, Jan 20
Lufthansa Logo
3:50 pm - 6:05 pmSTL-IST
17h 15m1 stop
Lufthansa Logo
6:30 am - 11:59 pmIST-STL
26h 29m2 stops
$566Lufthansa
Find Deal
Wed, Jan 14 - Sun, Feb 1
United Airlines Logo
3:50 pm - 10:45 pmSTL-IST
21h 55m1 stop
United Airlines Logo
6:30 am - 10:17 pmIST-STL
24h 47m2 stops
$568United Airlines
Find Deal
Sun, Jan 18 - Mon, Feb 16
United Airlines Logo
8:30 am - 6:05 pmSTL-IST
24h 35m2 stops
United Airlines Logo
6:30 am - 3:29 pmIST-STL
41h 59m2 stops
$569United Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 29
British Airways Logo
6:44 pm - 12:50 amSTL-IST
21h 06m2 stops
British Airways Logo
6:40 pm - 11:21 pmIST-STL
37h 41m2 stops
$581British Airways
Find Deal
Sun, Jan 18 - Mon, Feb 16
KLM Logo
12:00 pm - 5:25 pmSTL-SAW
20h 25m2 stops
KLM Logo
9:00 am - 8:45 pmSAW-STL
20h 45m2 stops
$734KLM
Find Deal
Sun, Jan 18 - Fri, Jan 23
Iberia Logo
2:54 pm - 6:55 pmSTL-SAW
43h 01m2 stops
Iberia Logo
9:15 am - 9:03 amSAW-STL
32h 48m2 stops
$747Iberia
Find Deal
Wed, Jan 14 - Sun, Feb 1
KLM Logo
12:49 pm - 9:20 pmSTL-SAW
23h 31m2 stops
KLM Logo
12:55 pm - 9:57 pmSAW-STL
42h 02m2 stops
$1,298KLM
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Thu, Dec 4 - Mon, Dec 8
Iberia Logo
9:28 am - 6:55 pmSTL-SAW
25h 27m2 stops
Iberia Logo
9:15 am - 8:58 amSAW-STL
31h 43m2 stops
$1,386Iberia
Find Deal
Thu, Mar 12 - Mon, Mar 23

Lufthansa flights from St. Louis to Istanbul

Our best Lufthansa deals on St. Louis to Istanbul flight tickets
Lufthansa
Jan 14
STL11:22 amLambert-St Louis
21h 43m
2 stops
IST6:05 pmIstanbul
Feb 1
IST6:30 amIstanbul
26h 29m
2 stops
STL11:59 pmLambert-St Louis
$558
Find similar
Lufthansa
Jan 14
STL3:50 pmLambert-St Louis
17h 15m
1 stop
IST6:05 pmIstanbul
Feb 1
IST6:30 amIstanbul
26h 29m
2 stops
STL11:59 pmLambert-St Louis
$566
Find similar
Lufthansa
Apr 1
STL3:30 pmLambert-St Louis
21h 45m
1 stop
IST9:15 pmIstanbul
Apr 15
IST6:00 amIstanbul
15h 30m
1 stop
STL1:30 pmLambert-St Louis
$596
Find similar

British Airways flights from St. Louis to Istanbul

Our best British Airways deals on St. Louis to Istanbul flight tickets
British Airways
Dec 31
STL2:06 pmLambert-St Louis
18h 19m
2 stops
IST5:25 pmIstanbul
Jan 20
IST7:35 amIstanbul
22h 40m
2 stops
STL9:15 pmLambert-St Louis
$565
Find similar
British Airways
Jan 18
STL6:44 pmLambert-St Louis
21h 06m
2 stops
IST12:50 amIstanbul
Feb 16
IST6:40 pmIstanbul
37h 41m
2 stops
STL11:21 pmLambert-St Louis
$581
Find similar
British Airways
Dec 23
STL5:16 pmLambert-St Louis
22h 44m
2 stops
IST1:00 amIstanbul
Jan 20
IST7:35 amIstanbul
22h 40m
2 stops
STL9:15 pmLambert-St Louis
$1,001
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 November 20, 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 1/14

11:22 am-6:05 pm

2 stops21h 43m

Istanbul

Sun 2/1

6:30 am-11:59 pm

2 stops26h 29m

$558

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 12/31

2:06 pm-5:25 pm

2 stops18h 19m

Istanbul

Tue 1/20

7:35 am-9:15 pm

2 stops22h 40m

$565

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Sun 2/1

6:30 am-11:59 pm

2 stops26h 29m

$566

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 1/18

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Mon 2/16

6:30 am-10:17 pm

2 stops24h 47m

$568

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 1/15

8:30 am-6:05 pm

2 stops24h 35m

Istanbul

Thu 1/29

6:30 am-3:29 pm

2 stops41h 59m

$569

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 1/18

6:44 pm-12:50 am

2 stops21h 06m

Istanbul

Mon 2/16

6:40 pm-11:21 pm

2 stops37h 41m

$581

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sun 1/18

12:00 pm-5:25 pm

2 stops20h 25m

Istanbul Sabiha Gokcen

Fri 1/23

9:00 am-8:45 pm

2 stops20h 45m

$734

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 1/14

2:54 pm-6:55 pm

2 stops43h 01m

Istanbul Sabiha Gokcen

Sun 2/1

9:15 am-9:03 am

2 stops32h 48m

$747

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Thu 12/4

12:49 pm-9:20 pm

2 stops23h 31m

Istanbul Sabiha Gokcen

Mon 12/8

12:55 pm-9:57 pm

2 stops42h 02m

$1,298

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Thu 3/12

9:28 am-6:55 pm

2 stops25h 27m

Istanbul Sabiha Gokcen

Mon 3/23

9:15 am-8:58 am

2 stops31h 43m

$1,386

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 $617. If you aren’t able to travel to Istanbul during the month of December, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $809.

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 $1,035 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 $815 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 16h 35m.

  • 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
British AirwaysPriceFrom $576Free CancellationRating
6.7
7,533 reviews
Search British Airways flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,463 reviews
Search Air Canada flights
KLMPriceFrom $647Free CancellationRating
7.7
1,414 reviews
Search KLM flights
DeltaPriceFrom $680Free CancellationRating
7.9
8,002 reviews
Search Delta flights
United AirlinesPriceFrom $708Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights
LufthansaPriceFrom $752Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $1,162Free CancellationRating
7.3
4,044 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