Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Istanbul from $338

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 11/27. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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 pmSTL-IST
17h 15m1 stop
Lufthansa Logo
6:30 am - 10:58 pmIST-STL
25h 28m2 stops
$557Lufthansa
Find Deal
Wed, Jan 14 - Sun, Feb 1
Multiple Airlines Logo
4:05 pm - 6:05 pmSTL-IST
41h 00m2 stops
Multiple Airlines Logo
6:30 am - 10:58 pmIST-STL
25h 28m2 stops
$571Multiple Airlines
Find Deal
Wed, Feb 4 - Sun, Feb 8
United Airlines Logo
8:30 am - 6:05 pmSTL-IST
24h 35m2 stops
United Airlines Logo
6:30 am - 3:29 pmIST-STL
41h 59m2 stops
$572United Airlines
Find Deal
Wed, Feb 11 - Tue, Feb 17
British Airways Logo
11:05 am - 5:25 pmSTL-IST
21h 20m2 stops
British Airways Logo
8:20 am - 10:59 pmIST-STL
23h 39m2 stops
$574British Airways
Find Deal
Wed, Jan 14 - Sun, Feb 1
British Airways Logo
1:35 pm - 5:25 pmSTL-IST
18h 50m2 stops
British Airways Logo
6:40 pm - 10:11 pmIST-STL
36h 31m2 stops
$580British Airways
Find Deal
Sun, Jan 18 - Mon, Feb 16
British Airways Logo
6:44 pm - 12:50 amSTL-IST
21h 06m2 stops
British Airways Logo
6:40 pm - 11:21 pmIST-STL
37h 41m2 stops
$581British Airways
Find Deal
Sun, Jan 18 - Mon, Feb 16
Delta Logo
1:00 pm - 3:50 amSTL-IST
29h 50m2 stops
Delta Logo
4:50 am - 11:38 pmIST-STL
27h 48m2 stops
$587Delta
Find Deal
Wed, Feb 11 - Mon, Feb 16
Delta Logo
5:45 pm - 3:30 amSTL-IST
25h 45m2 stops
Delta Logo
5:05 pm - 7:12 pmIST-STL
34h 07m2 stops
$637Delta
Find Deal
Mon, Apr 20 - Mon, Apr 27
KLM Logo
12:00 pm - 5:25 pmSTL-SAW
20h 25m2 stops
KLM Logo
9:00 am - 8:45 pmSAW-STL
20h 45m2 stops
$734KLM
Find Deal
Sun, Jan 18 - Fri, Jan 23
KLM Logo
1:00 pm - 5:25 pmSTL-SAW
19h 25m2 stops
KLM Logo
9:00 am - 8:43 pmSAW-STL
20h 43m2 stops
$790KLM
Find Deal
Tue, Jan 27 - Sat, Jan 31

United Airlines flights from St. Louis to Istanbul

Our best United Airlines deals on St. Louis to Istanbul flight tickets
United Airlines
Feb 11
STL8:30 amLambert-St Louis
24h 35m
2 stops
IST6:05 pmIstanbul
Feb 17
IST6:30 amIstanbul
41h 59m
2 stops
STL3:29 pmLambert-St Louis
$572
Find similar
United Airlines
Jan 14
STL11:20 amLambert-St Louis
21h 45m
2 stops
IST6:05 pmIstanbul
Feb 1
IST6:30 amIstanbul
24h 30m
2 stops
STL10:00 pmLambert-St Louis
$573
Find similar
United Airlines
Feb 13
STL8:21 amLambert-St Louis
24h 44m
2 stops
IST6:05 pmIstanbul
Feb 17
IST6:30 amIstanbul
41h 59m
2 stops
STL3:29 pmLambert-St Louis
$772
Find similar

Delta flights from St. Louis to Istanbul

Our best Delta deals on St. Louis to Istanbul flight tickets
Delta
Feb 11
STL1:00 pmLambert-St Louis
29h 50m
2 stops
IST3:50 amIstanbul
Feb 16
IST4:50 amIstanbul
27h 35m
2 stops
STL11:25 pmLambert-St Louis
$587
Find similar
Delta
Dec 9
STL6:05 pmLambert-St Louis
24h 45m
2 stops
IST3:50 amIstanbul
Dec 24
IST4:50 amIstanbul
26h 26m
2 stops
STL10:16 pmLambert-St Louis
$787
Find similar
Delta
Feb 13
STL10:13 amLambert-St Louis
21h 42m
2 stops
IST4:55 pmIstanbul
Feb 16
IST4:50 amIstanbul
23h 34m
2 stops
STL7:24 pmLambert-St Louis
$898
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 November 18, 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 1/14

3:50 pm-6:05 pm

1 stop17h 15m

Istanbul

Sun 2/1

6:30 am-10:58 pm

2 stops25h 28m

$557

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 2/4

4:05 pm-6:05 pm

2 stops41h 00m

Istanbul

Sun 2/8

6:30 am-10:58 pm

2 stops25h 28m

$571

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 2/11

8:30 am-6:05 pm

2 stops24h 35m

Istanbul

Tue 2/17

6:30 am-3:29 pm

2 stops41h 59m

$572

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 1/14

11:05 am-5:25 pm

2 stops21h 20m

Istanbul

Sun 2/1

8:20 am-10:59 pm

2 stops23h 39m

$574

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Sun 1/18

1:35 pm-5:25 pm

2 stops18h 50m

Istanbul

Mon 2/16

6:40 pm-10:11 pm

2 stops36h 31m

$580

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-11:21 pm

2 stops37h 41m

$581

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Wed 2/11

1:00 pm-3:50 am

2 stops29h 50m

Istanbul

Mon 2/16

4:50 am-11:38 pm

2 stops27h 48m

$587

St. LouisIstanbul

STL - IST

STLIST

Lambert-St Louis

Mon 4/20

5:45 pm-3:30 am

2 stops25h 45m

Istanbul

Mon 4/27

5:05 pm-7:12 pm

2 stops34h 07m

$637

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Sun 1/18

12:00 pm-5:25 pm

2 stops20h 25m

Istanbul Sabiha Gokcen

Fri 1/23

9:00 am-8:45 pm

2 stops20h 45m

$734

St. LouisIstanbul

STL - SAW

STLSAW

Lambert-St Louis

Tue 1/27

1:00 pm-5:25 pm

2 stops19h 25m

Istanbul Sabiha Gokcen

Sat 1/31

9:00 am-8:43 pm

2 stops20h 43m

$790

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $617. 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 $809.

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 $1,035 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 $815 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 25m.

  • 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
7,532 reviews
Search British Airways flights
Air CanadaPriceFrom $627Free CancellationRating
7.1
10,462 reviews
Search Air Canada flights
KLMPriceFrom $647Free CancellationRating
7.7
1,411 reviews
Search KLM flights
DeltaPriceFrom $680Free CancellationRating
7.9
8,003 reviews
Search Delta flights
United AirlinesPriceFrom $708Free CancellationRating
7.4
9,020 reviews
Search United Airlines flights
LufthansaPriceFrom $752Free CancellationRating
6.8
7,576 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $1,162Free CancellationRating
7.3
4,047 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.

An easier way to manage your Istanbul trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 12/18
Thu 12/25
By creating a price alert you accept our terms of use and privacy policy.

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