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Cheap flights from St. Louis to Istanbul from $229

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 1/26. 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 - 6:05 pm
STL
-
IST
17h 15m1 stop
Lufthansa Logo
6:30 am - 1:55 pm
IST
-
STL
16h 25m1 stop
$543Lufthansa
Fri, Jan 23 - Wed, Jan 28
Lufthansa Logo
12:44 pm - 6:05 pm
STL
-
IST
20h 21m2 stops
Lufthansa Logo
6:30 am - 1:55 pm
IST
-
STL
16h 25m1 stop
$557Lufthansa
Fri, Jan 23 - Wed, Jan 28
British Airways Logo
6:43 pm - 8:15 pm
STL
-
IST
16h 32m2 stops
British Airways Logo
7:35 am - 10:44 pm
IST
-
STL
24h 09m2 stops
$560British Airways
Sat, Jan 24 - Sat, Jan 31
British Airways Logo
6:44 pm - 12:25 am
STL
-
IST
20h 41m2 stops
British Airways Logo
2:55 pm - 6:11 pm
IST
-
STL
36h 16m2 stops
$561British Airways
Wed, Feb 11 - Tue, Feb 17
United Airlines Logo
3:50 pm - 6:05 pm
STL
-
IST
17h 15m1 stop
United Airlines Logo
6:30 am - 3:15 pm
IST
-
STL
41h 45m2 stops
$569United Airlines
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
11:25 am - 6:05 pm
STL
-
IST
21h 40m2 stops
United Airlines Logo
6:30 am - 3:29 pm
IST
-
STL
41h 59m2 stops
$573United Airlines
Thu, Feb 26 - Mon, Mar 2
KLM Logo
11:23 am - 5:25 pm
STL
-
SAW
21h 02m2 stops
KLM Logo
9:00 am - 8:43 pm
SAW
-
STL
20h 43m2 stops
$609KLM
Sat, Jan 24 - Sat, Jan 31
KLM Logo
11:23 am - 5:25 pm
STL
-
SAW
21h 02m2 stops
KLM Logo
12:55 pm - 11:37 pm
SAW
-
STL
19h 42m2 stops
$735KLM
Tue, Jan 20 - Fri, Jan 30
Iberia Logo
9:34 am - 6:55 pm
STL
-
SAW
24h 21m2 stops
Iberia Logo
9:15 am - 8:52 am
SAW
-
STL
32h 37m2 stops
$1,091Iberia
Thu, Feb 5 - Mon, Feb 16
Iberia Logo
10:07 am - 9:05 pm
STL
-
SAW
26h 58m2 stops
Iberia Logo
10:00 am - 8:42 am
SAW
-
STL
30h 42m2 stops
$1,109Iberia
Mon, Mar 23 - Tue, Apr 14

British Airways flights from St. Louis to Istanbul

Our best British Airways deals on St. Louis to Istanbul flight tickets
British Airways
Jan 24
STL6:43 pmLambert-St Louis
16h 32m
2 stops
IST8:15 pmIstanbul
Jan 31
IST7:35 amIstanbul
24h 09m
2 stops
STL10:44 pmLambert-St Louis
$560
Find similar
British Airways
Feb 11
STL6:44 pmLambert-St Louis
20h 41m
2 stops
IST12:25 amIstanbul
Feb 17
IST2:55 pmIstanbul
36h 16m
2 stops
STL6:11 pmLambert-St Louis
$561
Find similar
British Airways
Mar 19
STL2:00 pmLambert-St Louis
19h 30m
2 stops
IST5:30 pmIstanbul
Mar 26
IST7:35 amIstanbul
18h 28m
2 stops
STL6:03 pmLambert-St Louis
$661
Find similar

United Airlines flights from St. Louis to Istanbul

Our best United Airlines deals on St. Louis to Istanbul flight tickets
United Airlines
Jan 30
STL3:50 pmLambert-St Louis
17h 15m
1 stop
IST6:05 pmIstanbul
Feb 3
IST6:30 amIstanbul
41h 45m
2 stops
STL3:15 pmLambert-St Louis
$569
Find similar
United Airlines
Feb 26
STL11:25 amLambert-St Louis
21h 40m
2 stops
IST6:05 pmIstanbul
Mar 2
IST6:30 amIstanbul
41h 59m
2 stops
STL3:29 pmLambert-St Louis
$573
Find similar
United Airlines
Feb 7
STL1:15 pmLambert-St Louis
19h 50m
2 stops
IST6:05 pmIstanbul
Feb 25
IST6:30 amIstanbul
24h 44m
3 stops
STL10:14 pmLambert-St Louis
$577
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 December 28, 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

Fri 1/23

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Wed 1/28

6:30 am-1:55 pm

1 stop16h 25m

$543

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/23

12:44 pm-6:05 pm

2 stops20h 21m

Istanbul

Wed 1/28

6:30 am-1:55 pm

1 stop16h 25m

$557

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 1/24

6:43 pm-8:15 pm

2 stops16h 32m

Istanbul

Sat 1/31

7:35 am-10:44 pm

2 stops24h 09m

$560

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 2/11

6:44 pm-12:25 am

2 stops20h 41m

Istanbul

Tue 2/17

2:55 pm-6:11 pm

2 stops36h 16m

$561

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Fri 1/30

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Tue 2/3

6:30 am-3:15 pm

2 stops41h 45m

$569

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Thu 2/26

11:25 am-6:05 pm

2 stops21h 40m

Istanbul

Mon 3/2

6:30 am-3:29 pm

2 stops41h 59m

$573

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sat 1/24

11:23 am-5:25 pm

2 stops21h 02m

Istanbul Sabiha Gokcen

Sat 1/31

9:00 am-8:43 pm

2 stops20h 43m

$609

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Tue 1/20

11:23 am-5:25 pm

2 stops21h 02m

Istanbul Sabiha Gokcen

Fri 1/30

12:55 pm-11:37 pm

2 stops19h 42m

$735

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Thu 2/5

9:34 am-6:55 pm

2 stops24h 21m

Istanbul Sabiha Gokcen

Mon 2/16

9:15 am-8:52 am

2 stops32h 37m

$1,091

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 3/23

10:07 am-9:05 pm

2 stops26h 58m

Istanbul Sabiha Gokcen

Tue 4/14

10:00 am-8:42 am

2 stops30h 42m

$1,109

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 $607. 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 $744.

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.

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 $1,028 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 $701 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

16h 40m

Direct flights

None
The fastest flight from St. Louis to Istanbul takes 16h 40m
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 40m.

  • 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
7,616 reviews
Search British Airways flights
KLMPriceFrom $617Free CancellationRating
7.7
1,435 reviews
Search KLM flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
DeltaPriceFrom $687Free CancellationRating
7.9
8,017 reviews
Search Delta flights
United AirlinesPriceFrom $708Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
LufthansaPriceFrom $718Free CancellationRating
6.8
7,658 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $1,200Free CancellationRating
7.3
4,125 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