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Cheap flights from St. Louis to Istanbul from $602

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 5/25. 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
1 adult, Economy, 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.
Delta Logo
5:59 pm - 3:30 am
STL
-
IST
25h 31m
2 stops
Delta Logo
6:00 am - 11:36 pm
IST
-
STL
25h 36m
2 stops
$638Delta
Tue, Apr 14 - Wed, Apr 29
Multiple Airlines Logo
5:25 pm - 4:20 pm
STL
-
IST
14h 55m
2 stops
Multiple Airlines Logo
4:25 am - 4:42 pm
IST
-
STL
20h 17m
2 stops
$675Multiple Airlines
Mon, Apr 6 - Wed, Apr 15
Lufthansa Logo
3:30 pm - 9:25 pm
STL
-
IST
21h 55m
1 stop
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$677Lufthansa
Wed, Apr 22 - Wed, Apr 29
KLM Logo
11:42 am - 5:05 pm
STL
-
SAW
21h 23m
2 stops
KLM Logo
8:50 am - 11:36 pm
SAW
-
STL
22h 46m
2 stops
$677KLM
Tue, Apr 14 - Wed, Apr 29
Lufthansa Logo
11:37 am - 9:15 pm
STL
-
IST
25h 38m
2 stops
Lufthansa Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$679Lufthansa
Tue, Apr 14 - Wed, Apr 29
Multiple Airlines Logo
8:54 am - 9:15 pm
STL
-
IST
28h 21m
2 stops
Multiple Airlines Logo
5:50 pm - 1:25 pm
IST
-
STL
27h 35m
1 stop
$685Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
2:40 pm - 9:25 pm
STL
-
IST
22h 45m
2 stops
United Airlines Logo
5:40 am - 1:25 pm
IST
-
STL
15h 45m
1 stop
$686United Airlines
Wed, Apr 22 - Wed, Apr 29
Delta Logo
5:59 pm - 3:30 am
STL
-
IST
25h 31m
2 stops
Delta Logo
6:00 am - 11:13 pm
IST
-
STL
25h 13m
2 stops
$688Delta
Mon, Apr 20 - Sat, May 2
Scandinavian Airlines Logo
1:30 pm - 3:40 am
STL
-
IST
30h 10m
2 stops
Scandinavian Airlines Logo
4:30 am - 11:37 pm
IST
-
STL
27h 07m
2 stops
$693Scandinavian Airlines
Mon, Sep 7 - Sat, Sep 19
KLM Logo
5:59 pm - 9:00 pm
STL
-
SAW
19h 01m
2 stops
KLM Logo
8:50 am - 11:58 pm
SAW
-
STL
23h 08m
2 stops
$776KLM
Mon, Mar 30 - Mon, Apr 6

Delta flights from St. Louis to Istanbul

Our best Delta deals on St. Louis to Istanbul flight tickets
Delta
Apr 14
STL5:59 pmLambert-St Louis
25h 31m
2 stops
IST3:30 amIstanbul
Apr 29
IST6:00 amIstanbul
25h 36m
2 stops
STL11:36 pmLambert-St Louis
$638
Delta
Apr 20
STL5:59 pmLambert-St Louis
25h 31m
2 stops
IST3:30 amIstanbul
May 2
IST6:00 amIstanbul
25h 13m
2 stops
STL11:13 pmLambert-St Louis
$688
Delta
Apr 23
STL10:50 amLambert-St Louis
30h 30m
2 stops
IST1:20 amIstanbul
Apr 30
IST6:00 amIstanbul
25h 36m
2 stops
STL11:36 pmLambert-St Louis
$738

Lufthansa flights from St. Louis to Istanbul

Our best Lufthansa deals on St. Louis to Istanbul flight tickets
Lufthansa
Apr 22
STL3:30 pmLambert-St Louis
21h 55m
1 stop
IST9:25 pmIstanbul
Apr 29
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$677
Lufthansa
Apr 14
STL11:37 amLambert-St Louis
25h 38m
2 stops
IST9:15 pmIstanbul
Apr 29
IST5:40 amIstanbul
15h 45m
1 stop
STL1:25 pmLambert-St Louis
$679
Lufthansa
Apr 20
STL8:15 pmLambert-St Louis
17h 10m
2 stops
IST9:25 pmIstanbul
May 2
IST1:55 pmIstanbul
31h 30m
1 stop
STL1:25 pmLambert-St Louis
$761

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 March 12, 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

Cheapest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 4/14

5:59 pm-3:30 am

2 stops25h 31m

Istanbul

Wed 4/29

6:00 am-11:36 pm

2 stops25h 36m

$638
Quickest round-trip

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 4/6

5:25 pm-4:20 pm

2 stops14h 55m

Istanbul

Wed 4/15

4:25 am-4:42 pm

2 stops20h 17m

$675

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 4/22

3:30 pm-9:25 pm

1 stop21h 55m

Istanbul

Wed 4/29

5:40 am-1:25 pm

1 stop15h 45m

$677

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Tue 4/14

11:42 am-5:05 pm

2 stops21h 23m

Istanbul Sabiha Gokcen

Wed 4/29

8:50 am-11:36 pm

2 stops22h 46m

$677

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 4/14

11:37 am-9:15 pm

2 stops25h 38m

Istanbul

Wed 4/29

5:40 am-1:25 pm

1 stop15h 45m

$679

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 4/21

8:54 am-9:15 pm

2 stops28h 21m

Istanbul

Tue 4/28

5:50 pm-1:25 pm

1 stop27h 35m

$685

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 4/22

2:40 pm-9:25 pm

2 stops22h 45m

Istanbul

Wed 4/29

5:40 am-1:25 pm

1 stop15h 45m

$686

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 4/20

5:59 pm-3:30 am

2 stops25h 31m

Istanbul

Sat 5/2

6:00 am-11:13 pm

2 stops25h 13m

$688

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 9/7

1:30 pm-3:40 am

2 stops30h 10m

Istanbul

Sat 9/19

4:30 am-11:37 pm

2 stops27h 07m

$693

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Mon 3/30

5:59 pm-9:00 pm

2 stops19h 01m

Istanbul Sabiha Gokcen

Mon 4/6

8:50 am-11:58 pm

2 stops23h 08m

$776

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 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 $937 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 $782 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

18h 50m

Direct flights

None
The fastest flight from St. Louis to Istanbul takes 18h 50m
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 18h 50m.

  • 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
7,784 reviews
Search British Airways flights
LufthansaPriceFrom $585Free CancellationRating
6.8
7,844 reviews
Search Lufthansa flights
KLMPriceFrom $608Free CancellationRating
7.8
1,470 reviews
Search KLM flights
DeltaPriceFrom $613Free CancellationRating
7.9
8,286 reviews
Search Delta flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,800 reviews
Search Air Canada flights
United AirlinesPriceFrom $633Free CancellationRating
7.4
9,418 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $866Free CancellationRating
7.3
4,253 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