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Cheap flights from St. Louis to Istanbul from $339

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 11/23. 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
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.
Lufthansa Logo
3:50 pm - 10:45 pmSTL-IST
21h 55m1 stop
Lufthansa Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$551Lufthansa
Find Deal
pe, tammi 16 - su, tammi 25
Lufthansa Logo
1:00 pm - 10:45 pmSTL-IST
24h 45m2 stops
Lufthansa Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$554Lufthansa
Find Deal
ti, joulu 9 - ke, joulu 24
United Airlines Logo
9:00 am - 5:45 pmSTL-IST
23h 45m2 stops
United Airlines Logo
6:30 am - 7:18 pmIST-STL
21h 48m2 stops
$574United Airlines
Find Deal
ti, joulu 9 - to, joulu 25
British Airways Logo
6:44 pm - 12:35 amSTL-IST
20h 51m2 stops
British Airways Logo
8:20 am - 10:59 pmIST-STL
23h 39m2 stops
$575British Airways
Find Deal
pe, tammi 16 - su, tammi 25
Delta Logo
5:04 pm - 3:50 amSTL-IST
25h 46m2 stops
Delta Logo
4:50 am - 11:38 pmIST-STL
27h 48m2 stops
$586Delta
Find Deal
ke, helmi 11 - ma, helmi 16
Delta Logo
2:38 pm - 3:50 amSTL-IST
28h 12m2 stops
Delta Logo
4:50 am - 10:16 pmIST-STL
26h 26m2 stops
$599Delta
Find Deal
ti, joulu 9 - ti, joulu 23
British Airways Logo
1:43 pm - 5:25 pmSTL-IST
18h 42m2 stops
British Airways Logo
2:45 pm - 10:56 pmIST-STL
41h 11m2 stops
$602British Airways
Find Deal
ke, joulu 10 - ke, joulu 24
KLM Logo
3:31 pm - 5:25 pmSTL-SAW
16h 54m2 stops
KLM Logo
9:00 am - 8:45 pmSAW-STL
20h 45m2 stops
$607KLM
Find Deal
su, helmi 1 - su, helmi 8
KLM Logo
12:00 pm - 4:55 pmSTL-IST
19h 55m2 stops
KLM Logo
4:50 am - 8:41 pmIST-STL
24h 51m2 stops
$668KLM
Find Deal
su, tammi 18 - su, helmi 15
United Airlines Logo
3:19 pm - 5:55 pmSTL-IST
17h 36m2 stops
United Airlines Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$764United Airlines
Find Deal
ma, joulu 8 - ke, joulu 24

Lufthansa flights from St. Louis to Istanbul

Our best Lufthansa deals on St. Louis to Istanbul flight tickets
Lufthansa
Jan 16
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Jan 25
IST6:30 amIstanbul
16h 25m
1 stop
STL1:55 pmLambert-St Louis
$551
Find similar
Lufthansa
Dec 9
STL1:00 pmLambert-St Louis
24h 45m
2 stops
IST10:45 pmIstanbul
Dec 24
IST6:30 amIstanbul
16h 25m
1 stop
STL1:55 pmLambert-St Louis
$554
Find similar
Lufthansa
Jan 18
STL3:50 pmLambert-St Louis
17h 15m
1 stop
IST6:05 pmIstanbul
Feb 16
IST6:30 amIstanbul
26h 35m
2 stops
STL12:05 amLambert-St Louis
$560
Find similar

KLM flights from St. Louis to Istanbul

Our best KLM deals on St. Louis to Istanbul flight tickets
KLM
Feb 1
STL3:31 pmLambert-St Louis
16h 54m
2 stops
SAW5:25 pmIstanbul Sabiha Gokcen
Feb 8
SAW9:00 amIstanbul Sabiha Gokcen
20h 45m
2 stops
STL8:45 pmLambert-St Louis
$607
Find similar
KLM
Jan 18
STL12:00 pmLambert-St Louis
19h 55m
2 stops
IST4:55 pmIstanbul
Feb 15
IST4:50 amIstanbul
24h 51m
2 stops
STL8:41 pmLambert-St Louis
$668
Find similar
KLM
Jan 18
STL12:00 pmLambert-St Louis
19h 55m
2 stops
IST4:55 pmIstanbul
Feb 15
IST4:50 amIstanbul
21h 53m
2 stops
STL5:43 pmLambert-St Louis
$674
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 marraskuu 12, 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

pe 1/16

3:50 pm-10:45 pm

1 stop21h 55m

Istanbul

su 1/25

6:30 am-1:55 pm

1 stop16h 25m

$551

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ti 12/9

1:00 pm-10:45 pm

2 stops24h 45m

Istanbul

ke 12/24

6:30 am-1:55 pm

1 stop16h 25m

$554

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ti 12/9

9:00 am-5:45 pm

2 stops23h 45m

Istanbul

to 12/25

6:30 am-7:18 pm

2 stops21h 48m

$574

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

pe 1/16

6:44 pm-12:35 am

2 stops20h 51m

Istanbul

su 1/25

8:20 am-10:59 pm

2 stops23h 39m

$575

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ke 2/11

5:04 pm-3:50 am

2 stops25h 46m

Istanbul

ma 2/16

4:50 am-11:38 pm

2 stops27h 48m

$586

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ti 12/9

2:38 pm-3:50 am

2 stops28h 12m

Istanbul

ti 12/23

4:50 am-10:16 pm

2 stops26h 26m

$599

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ke 12/10

1:43 pm-5:25 pm

2 stops18h 42m

Istanbul

ke 12/24

2:45 pm-10:56 pm

2 stops41h 11m

$602

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

su 2/1

3:31 pm-5:25 pm

2 stops16h 54m

Istanbul Sabiha Gokcen

su 2/8

9:00 am-8:45 pm

2 stops20h 45m

$607

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

su 1/18

12:00 pm-4:55 pm

2 stops19h 55m

Istanbul

su 2/15

4:50 am-8:41 pm

2 stops24h 51m

$668

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

ma 12/8

3:19 pm-5:55 pm

2 stops17h 36m

Istanbul

ke 12/24

6:30 am-1:55 pm

1 stop16h 25m

$764

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 15h 23m.

  • 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
7,513 reviews
Search British Airways flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,443 reviews
Search Air Canada flights
KLMPriceFrom $647Free CancellationRating
7.7
1,410 reviews
Search KLM flights
DeltaPriceFrom $680Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $708Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
LufthansaPriceFrom $752Free CancellationRating
6.8
7,565 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $1,162Free CancellationRating
7.3
4,043 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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pe 12/12
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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