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Cheap flights from St. Louis to Istanbul from $354

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 5/4. 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.
Multiple Airlines Logo
6:33 pm - 7:15 pm
STL
-
IST
16h 42m
2 stops
Multiple Airlines Logo
8:15 am - 10:17 pm
IST
-
STL
22h 02m
2 stops
$578Multiple Airlines
dg., abr. 5 - dt., abr. 21
United Airlines Logo
6:00 am - 10:45 pm
STL
-
IST
32h 45m
2 stops
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$594United Airlines
dc., març 18 - dc., abr. 15
Lufthansa Logo
1:10 pm - 2:05 am
STL
-
IST
28h 55m
2 stops
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$600Lufthansa
dt., març 31 - dc., abr. 15
United Airlines Logo
6:00 am - 10:45 pm
STL
-
IST
32h 45m
2 stops
United Airlines Logo
5:40 am - 9:08 pm
IST
-
STL
23h 28m
2 stops
$604United Airlines
dc., març 18 - dc., abr. 15
Lufthansa Logo
6:35 pm - 2:05 am
STL
-
IST
23h 30m
2 stops
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$612Lufthansa
dg., març 29 - dc., abr. 15
Delta Logo
5:59 pm - 3:50 am
STL
-
IST
25h 51m
2 stops
Delta Logo
5:20 pm - 4:16 pm
IST
-
STL
30h 56m
2 stops
$616Delta
dt., març 24 - dl., març 30
KLM Logo
5:59 pm - 9:20 pm
STL
-
SAW
19h 21m
2 stops
KLM Logo
8:50 am - 8:42 pm
SAW
-
STL
19h 52m
2 stops
$728KLM
dc., març 18 - dc., abr. 15
Air Europa Logo
1:39 pm - 5:25 pm
STL
-
SAW
19h 46m
2 stops
Air Europa Logo
12:55 pm - 5:53 pm
SAW
-
STL
36h 58m
2 stops
$732Air Europa
dc., març 18 - dt., març 24
KLM Logo
5:59 pm - 9:20 pm
STL
-
SAW
19h 21m
2 stops
KLM Logo
12:55 pm - 5:53 pm
SAW
-
STL
36h 58m
2 stops
$737KLM
dl., març 9 - dl., març 16
Air Europa Logo
5:35 pm - 5:05 pm
STL
-
SAW
15h 30m
2 stops
Air Europa Logo
8:50 am - 11:14 pm
SAW
-
STL
22h 24m
2 stops
$848Air Europa
dl., abr. 13 - dv., abr. 17

British Airways flights from St. Louis to Istanbul

Our best British Airways deals on St. Louis to Istanbul flight tickets
British Airways
Mar 18
STL11:59 amLambert-St Louis
28h 26m
2 stops
IST12:25 amIstanbul
Mar 24
IST2:55 pmIstanbul
38h 16m
2 stops
STL9:11 pmLambert-St Louis
$662
British Airways
Mar 17
STL11:46 amLambert-St Louis
29h 14m
2 stops
IST1:00 amIstanbul
Mar 23
IST6:40 pmIstanbul
37h 04m
2 stops
STL11:44 pmLambert-St Louis
$707
British Airways
Mar 19
STL7:00 amLambert-St Louis
34h 10m
2 stops
IST1:10 amIstanbul
Mar 25
IST7:35 amIstanbul
24h 09m
2 stops
STL11:44 pmLambert-St Louis
$712

United Airlines flights from St. Louis to Istanbul

Our best United Airlines deals on St. Louis to Istanbul flight tickets
United Airlines
Mar 18
STL6:00 amLambert-St Louis
32h 45m
2 stops
IST10:45 pmIstanbul
Apr 15
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$594
United Airlines
Mar 18
STL6:00 amLambert-St Louis
32h 45m
2 stops
IST10:45 pmIstanbul
Apr 15
IST5:40 amIstanbul
23h 28m
2 stops
STL9:08 pmLambert-St Louis
$604
United Airlines
Mar 18
STL6:00 amLambert-St Louis
32h 45m
2 stops
IST10:45 pmIstanbul
Apr 15
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$619

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 febrer 14, 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

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dg. 4/5

6:33 pm-7:15 pm

2 stops16h 42m

Istanbul

dt. 4/21

8:15 am-10:17 pm

2 stops22h 02m

$578

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dc. 3/18

6:00 am-10:45 pm

2 stops32h 45m

Istanbul

dc. 4/15

5:40 am-1:25 pm

1 stop15h 45m

$594

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dt. 3/31

1:10 pm-2:05 am

2 stops28h 55m

Istanbul

dc. 4/15

5:40 am-1:25 pm

1 stop15h 45m

$600

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dc. 3/18

6:00 am-10:45 pm

2 stops32h 45m

Istanbul

dc. 4/15

5:40 am-9:08 pm

2 stops23h 28m

$604

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dg. 3/29

6:35 pm-2:05 am

2 stops23h 30m

Istanbul

dc. 4/15

5:40 am-1:25 pm

1 stop15h 45m

$612

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

dt. 3/24

5:59 pm-3:50 am

2 stops25h 51m

Istanbul

dl. 3/30

5:20 pm-4:16 pm

2 stops30h 56m

$616

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

dc. 3/18

5:59 pm-9:20 pm

2 stops19h 21m

Istanbul Sabiha Gokcen

dc. 4/15

8:50 am-8:42 pm

2 stops19h 52m

$728

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

dc. 3/18

1:39 pm-5:25 pm

2 stops19h 46m

Istanbul Sabiha Gokcen

dt. 3/24

12:55 pm-5:53 pm

2 stops36h 58m

$732

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

dl. 3/9

5:59 pm-9:20 pm

2 stops19h 21m

Istanbul Sabiha Gokcen

dl. 3/16

12:55 pm-5:53 pm

2 stops36h 58m

$737

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

dl. 4/13

5:35 pm-5:05 pm

2 stops15h 30m

Istanbul Sabiha Gokcen

dv. 4/17

8:50 am-11:14 pm

2 stops22h 24m

$848

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 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 $607. If you aren’t able to travel to Istanbul during the month of December, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $661.

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 $982 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 $707 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 30m

Direct flights

None
The fastest flight from St. Louis to Istanbul takes 15h 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

  • 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 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
British AirwaysPriceFrom $576Free CancellationRating
6.7
7,741 reviews
Search British Airways flights
LufthansaPriceFrom $586Free CancellationRating
6.8
7,785 reviews
Search Lufthansa flights
KLMPriceFrom $617Free CancellationRating
7.7
1,454 reviews
Search KLM flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,720 reviews
Search Air Canada flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,292 reviews
Search United Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.9
8,207 reviews
Search Delta flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.3
4,216 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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dl. 3/16
dl. 3/23
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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