Cheap flights from St. Louis to Istanbul from $490

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 1/15. 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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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
4:05 pm - 6:05 pm
STL
-
IST
17h 00m2 stops
Multiple Airlines Logo
6:30 am - 3:29 pm
IST
-
STL
41h 59m2 stops
$528Multiple Airlines
Wed, Feb 25 - Tue, Mar 3
British Airways Logo
11:59 am - 12:25 am
STL
-
IST
27h 26m2 stops
British Airways Logo
6:40 pm - 5:58 pm
IST
-
STL
31h 18m2 stops
$530British Airways
Wed, Mar 4 - Mon, Mar 9
Lufthansa Logo
4:50 pm - 10:45 pm
STL
-
IST
21h 55m1 stop
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m1 stop
$531Lufthansa
Wed, Mar 18 - Wed, Apr 15
United Airlines Logo
4:50 pm - 10:45 pm
STL
-
IST
21h 55m1 stop
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m1 stop
$533United Airlines
Sun, Mar 22 - Wed, Apr 1
Lufthansa Logo
4:50 pm - 10:45 pm
STL
-
IST
21h 55m1 stop
Lufthansa Logo
5:40 am - 9:08 pm
IST
-
STL
23h 28m2 stops
$535Lufthansa
Wed, Mar 18 - Wed, Apr 15
British Airways Logo
6:44 pm - 12:50 am
STL
-
IST
21h 06m2 stops
British Airways Logo
6:40 pm - 5:13 pm
IST
-
STL
55h 33m2 stops
$536British Airways
Sun, Jan 18 - Mon, Feb 16
United Airlines Logo
7:00 pm - 10:45 pm
STL
-
IST
19h 45m2 stops
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m1 stop
$537United Airlines
Mon, Mar 16 - Wed, Apr 1
KLM Logo
6:59 pm - 9:20 pm
STL
-
SAW
18h 21m2 stops
KLM Logo
8:50 am - 8:38 pm
SAW
-
STL
19h 48m2 stops
$608KLM
Wed, Mar 18 - Wed, Apr 15
KLM Logo
11:23 am - 5:25 pm
STL
-
SAW
21h 02m2 stops
KLM Logo
9:00 am - 11:37 pm
SAW
-
STL
23h 37m2 stops
$610KLM
Wed, Feb 4 - Wed, Feb 11
Air Europa Logo
10:14 am - 5:25 pm
STL
-
SAW
22h 11m2 stops
Air Europa Logo
4:00 pm - 4:32 pm
SAW
-
STL
32h 32m2 stops
$676Air Europa
Sun, Mar 1 - Sun, Mar 8

British Airways flights from St. Louis to Istanbul

Our best British Airways deals on St. Louis to Istanbul flight tickets
British Airways
Mar 18
STL2:19 pmLambert-St Louis
19h 06m
2 stops
IST5:25 pmIstanbul
Apr 15
IST8:15 amIstanbul
22h 49m
2 stops
STL11:04 pmLambert-St Louis
$530
British Airways
Jan 18
STL6:44 pmLambert-St Louis
21h 06m
2 stops
IST12:50 amIstanbul
Feb 16
IST6:40 pmIstanbul
55h 33m
2 stops
STL5:13 pmLambert-St Louis
$536
British Airways
Feb 6
STL1:35 pmLambert-St Louis
18h 50m
2 stops
IST5:25 pmIstanbul
Feb 17
IST7:35 amIstanbul
22h 37m
2 stops
STL9:12 pmLambert-St Louis
$545

Lufthansa flights from St. Louis to Istanbul

Our best Lufthansa deals on St. Louis to Istanbul flight tickets
Lufthansa
Mar 18
STL4:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Apr 15
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$531
Lufthansa
Mar 18
STL4:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Apr 15
IST5:40 amIstanbul
23h 28m
2 stops
STL9:08 pmLambert-St Louis
$535
Lufthansa
Mar 1
STL3:50 pmLambert-St Louis
21h 55m
1 stop
IST10:45 pmIstanbul
Mar 8
IST6:30 amIstanbul
16h 25m
1 stop
STL1:55 pmLambert-St Louis
$542

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 January 8, 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

Wed 2/25

4:05 pm-6:05 pm

2 stops17h 00m

Istanbul

Tue 3/3

6:30 am-3:29 pm

2 stops41h 59m

$528

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/4

11:59 am-12:25 am

2 stops27h 26m

Istanbul

Mon 3/9

6:40 pm-5:58 pm

2 stops31h 18m

$530

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 4/15

5:40 am-1:25 pm

1 stop15h 45m

$531

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 3/22

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 4/1

5:40 am-1:25 pm

1 stop15h 45m

$533

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 3/18

4:50 pm-10:45 pm

1 stop21h 55m

Istanbul

Wed 4/15

5:40 am-9:08 pm

2 stops23h 28m

$535

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-5:13 pm

2 stops55h 33m

$536

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 3/16

7:00 pm-10:45 pm

2 stops19h 45m

Istanbul

Wed 4/1

5:40 am-1:25 pm

1 stop15h 45m

$537

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 3/18

6:59 pm-9:20 pm

2 stops18h 21m

Istanbul Sabiha Gokcen

Wed 4/15

8:50 am-8:38 pm

2 stops19h 48m

$608

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Wed 2/4

11:23 am-5:25 pm

2 stops21h 02m

Istanbul Sabiha Gokcen

Wed 2/11

9:00 am-11:37 pm

2 stops23h 37m

$610

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sun 3/1

10:14 am-5:25 pm

2 stops22h 11m

Istanbul Sabiha Gokcen

Sun 3/8

4:00 pm-4:32 pm

2 stops32h 32m

$676

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $663.

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 $999 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 $659 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 59m

Direct flights

None
The fastest flight from St. Louis to Istanbul takes 15h 59m
There are no direct flights from St. Louis to Istanbul. There are no popular flight routes from St. Louis to Istanbul.
  • 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 59m.

  • 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
7,657 reviews
Search British Airways flights
LufthansaPriceFrom $586Free CancellationRating
6.8
7,692 reviews
Search Lufthansa flights
KLMPriceFrom $617Free CancellationRating
7.7
1,434 reviews
Search KLM flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,603 reviews
Search Air Canada flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
DeltaPriceFrom $687Free CancellationRating
7.9
8,025 reviews
Search Delta flights
Turkish AirlinesPriceFrom $1,200Free CancellationRating
7.3
4,150 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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1 adult
Sat 2/7
Sat 2/14

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