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Cheap flights from St. Louis to Istanbul from $378

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 11/15. 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

Lufthansa Logo
3:50 pm - 6:05 pmSTL-IST
17h 15m1 stop
Lufthansa Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$593Lufthansa
Find Deal
Wed, Nov 5 - Wed, Nov 12
Lufthansa Logo
3:50 pm - 6:05 pmSTL-IST
17h 15m1 stop
Lufthansa Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$595Lufthansa
Find Deal
Wed, Nov 5 - Wed, Nov 12
United Airlines Logo
3:50 pm - 6:05 pmSTL-IST
17h 15m1 stop
United Airlines Logo
6:30 am - 1:55 pmIST-STL
16h 25m1 stop
$623United Airlines
Find Deal
Sun, Nov 16 - Wed, Dec 3
Delta Logo
5:14 pm - 3:50 amSTL-IST
25h 36m2 stops
Delta Logo
4:50 am - 6:02 pmIST-STL
22h 12m2 stops
$627Delta
Find Deal
Sun, Nov 16 - Wed, Dec 3
Delta Logo
4:30 pm - 3:50 amSTL-IST
26h 20m2 stops
Delta Logo
4:50 am - 4:40 pmIST-STL
20h 50m2 stops
$628Delta
Find Deal
Sun, Nov 16 - Mon, Dec 1
United Airlines Logo
3:50 pm - 6:05 pmSTL-IST
17h 15m1 stop
United Airlines Logo
6:30 am - 10:45 pmIST-STL
25h 15m2 stops
$629United Airlines
Find Deal
Wed, Nov 19 - Wed, Dec 3
Air Canada Logo
4:05 pm - 6:05 pmSTL-IST
41h 00m2 stops
Air Canada Logo
6:30 am - 3:29 pmIST-STL
41h 59m2 stops
$636Air Canada
Find Deal
Sat, Nov 15 - Tue, Dec 2
British Airways Logo
1:43 pm - 5:25 pmSTL-IST
18h 42m2 stops
British Airways Logo
7:35 am - 8:21 pmIST-STL
21h 46m2 stops
$641British Airways
Find Deal
Wed, Nov 5 - Thu, Nov 13
Air Canada Logo
4:05 pm - 6:05 pmSTL-IST
41h 00m2 stops
Air Canada Logo
1:55 pm - 3:29 pmIST-STL
58h 34m2 stops
$657Air Canada
Find Deal
Sat, Nov 15 - Thu, Dec 4
British Airways Logo
8:01 pm - 12:25 amSTL-IST
43h 24m2 stops
British Airways Logo
7:35 am - 8:23 pmIST-STL
21h 48m2 stops
$673British Airways
Find Deal
Tue, Dec 23 - Tue, Jan 20

Delta flights from St. Louis to Istanbul

Our best Delta deals on St. Louis to Istanbul flight tickets
Delta
Nov 16
STL5:14 pmLambert-St Louis
25h 36m
2 stops
IST3:50 amIstanbul
Dec 3
IST4:50 amIstanbul
22h 12m
2 stops
STL6:02 pmLambert-St Louis
$627
Find similar
Delta
Nov 16
STL4:30 pmLambert-St Louis
26h 20m
2 stops
IST3:50 amIstanbul
Dec 1
IST4:50 amIstanbul
20h 50m
2 stops
STL4:40 pmLambert-St Louis
$628
Find similar
Delta
Nov 16
STL4:30 pmLambert-St Louis
26h 20m
2 stops
IST3:50 amIstanbul
Dec 1
IST4:50 amIstanbul
25h 00m
2 stops
STL8:50 pmLambert-St Louis
$631
Find similar

Air Canada flights from St. Louis to Istanbul

Our best Air Canada deals on St. Louis to Istanbul flight tickets
Air Canada
Nov 15
STL4:05 pmLambert-St Louis
41h 00m
2 stops
IST6:05 pmIstanbul
Dec 2
IST6:30 amIstanbul
41h 59m
2 stops
STL3:29 pmLambert-St Louis
$636
Find similar
Air Canada
Nov 15
STL4:05 pmLambert-St Louis
41h 00m
2 stops
IST6:05 pmIstanbul
Dec 4
IST1:55 pmIstanbul
58h 34m
2 stops
STL3:29 pmLambert-St Louis
$657
Find similar
Air Canada
Nov 4
STL4:05 pmLambert-St Louis
45h 15m
2 stops
IST10:20 pmIstanbul
Nov 12
IST2:55 pmIstanbul
33h 34m
2 stops
STL3:29 pmLambert-St Louis
$658
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 August 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

Wed 11/5

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Wed 11/12

6:30 am-1:55 pm

1 stop16h 25m

$593

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Wed 11/12

6:30 am-1:55 pm

1 stop16h 25m

$595

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 11/16

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Wed 12/3

6:30 am-1:55 pm

1 stop16h 25m

$623

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 11/16

5:14 pm-3:50 am

2 stops25h 36m

Istanbul

Wed 12/3

4:50 am-6:02 pm

2 stops22h 12m

$627

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 11/16

4:30 pm-3:50 am

2 stops26h 20m

Istanbul

Mon 12/1

4:50 am-4:40 pm

2 stops20h 50m

$628

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/19

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Wed 12/3

6:30 am-10:45 pm

2 stops25h 15m

$629

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 11/15

4:05 pm-6:05 pm

2 stops41h 00m

Istanbul

Tue 12/2

6:30 am-3:29 pm

2 stops41h 59m

$636

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 11/5

1:43 pm-5:25 pm

2 stops18h 42m

Istanbul

Thu 11/13

7:35 am-8:21 pm

2 stops21h 46m

$641

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sat 11/15

4:05 pm-6:05 pm

2 stops41h 00m

Istanbul

Thu 12/4

1:55 pm-3:29 pm

2 stops58h 34m

$657

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Tue 12/23

8:01 pm-12:25 am

2 stops43h 24m

Istanbul

Tue 1/20

7:35 am-8:23 pm

2 stops21h 48m

$673

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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, March 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 $809. If you aren’t able to travel to Istanbul during the month of March, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $882.

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 $1,084 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 $867 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 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
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
KLMPriceFrom $647Free CancellationRating
7.8
1,382 reviews
Search KLM flights
British AirwaysPriceFrom $662Free CancellationRating
6.7
7,316 reviews
Search British Airways flights
DeltaPriceFrom $687Free CancellationRating
7.9
7,977 reviews
Search Delta flights
LufthansaPriceFrom $764Free CancellationRating
6.8
7,368 reviews
Search Lufthansa flights
United AirlinesPriceFrom $814Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $1,162Free CancellationRating
7.3
3,954 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