STL - IST

$386 Find Cheap Flights from St. Louis to Istanbul Airport

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Istanbul departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Istanbul Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Istanbul.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Istanbul.
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Everything you should know

Cheapest round-trip
$638
Typical prices: $649-$1,207
Delta
Tue 4/14Wed 4/29
STL - IST • 2 stops
Cheapest one-way
$640
Typical prices: $801-$848
Qatar Airways
Mon 3/30
STL - IST • 2 stops
Top airlines
Cheapest • from $638 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Istanbul. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,053 (round-trip)
Shortest trip • 14h 23m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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We hope you love your trip to Istanbul!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Istanbul (STL-IST)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Istanbul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Istanbul

Tue, Apr 14 - Wed, Apr 29
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
Mon, Apr 6 - Wed, Apr 15
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
Wed, Apr 22 - Wed, Apr 29
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
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 21 - Tue, Apr 28
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
Wed, Apr 22 - Wed, Apr 29
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
Mon, Apr 20 - Sat, May 2
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, Sep 7 - Sat, Sep 19
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
Fri, Apr 24 - Fri, May 1
Air France Logo
12:23 pm - 3:30 am
STL
-
IST
31h 07m
2 stops
Air France Logo
4:25 am - 3:39 pm
IST
-
STL
43h 14m
2 stops
$726Air France
Thu, Apr 23 - Thu, Apr 30
Delta Logo
10:50 am - 1:20 am
STL
-
IST
30h 30m
2 stops
Delta Logo
6:00 am - 11:36 pm
IST
-
STL
25h 36m
2 stops
$738Delta
Booking Insights

KAYAK's insights & trends for St. Louis to Istanbul flights

Get data-powered insights and trends into flights from St. Louis to Istanbul to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Istanbul Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Istanbul Airport departing in April.

What is the cheapest month to fly from St. Louis to Istanbul Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Istanbul Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Istanbul Airport is December, where tickets cost $607 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,357 and $1,170 respectively.

How far in advance should I book a flight from St. Louis to Istanbul Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Istanbul Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Istanbul Airport, you should book around 6 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$638
Best time to beat the crowds with an average 19% drop in price.
Flight from St. Louis to Istanbul Airport

When to book flights from St. Louis to Istanbul

Are your dates flexible? Find out the best times to travel from St. Louis to Istanbul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Istanbul Airport flights

  • What is the cheapest flight from St. Louis to Istanbul Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Istanbul Airport was $640 for a one-way ticket and $638 for a round-trip.

  • Do I need a passport to fly between St. Louis and Istanbul Airport?

    A passport is required to fly from St. Louis to Istanbul Airport.

  • Which airports will I be using when flying from St. Louis to Istanbul Airport?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Istanbul Airport, also known as Istanbul.

  • Which aircraft models fly most regularly from St. Louis to Istanbul Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Istanbul Airport?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Istanbul Airport, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Istanbul, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from St. Louis to Istanbul are Delta and KLM. With an average price for the route of $1,160 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $847 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from St. Louis to Istanbul Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Istanbul Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Istanbul Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Istanbul Airport from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Istanbul Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Istanbul Airport with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and IST can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Istanbul Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Istanbul Airport from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Istanbul

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Istanbul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Istanbul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8286 reviews
7.9Comfort
8.1Boarding
7.2Food
8.5Crew
7.8Entertainment
Airline reviews

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

2.0 MediocreIsabella, Mar 2026
SLC - AUS
Read more Delta reviews

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

the cabin was kept too hot. couldn't sleep as a result

It was an amazing experience. Flight crew's service, hospitality, and the food were phenomenal. I don't think I'd want to try any other airline company after this. I would definitely recommend to friends and family. Thank you Turkish Airlines !

Business Class pods are horrible. If you're petite, you might be able to sleep on the uncomfortable seat and bed. Crew and food are fantastic.

I have travelled many times on Turkish, but they always board at least 30-40 minutes past the stated time. If informed properly, passengers can choose to spend more time in the .lounge instead of standing around by the gate waiting to board. The new lounge at DFW was a big disappointment. The aircraft itself was a shock. In the past I have flown this sector with regular business class seating configuration of 1-2-1, The 2-3-2 seating is very disappointing after paying such high prices for tickets. The DFW to Istanbul segment was slightly better, but the Istanbul to Delhi segment was no better than premium economy. I will try to travel more on airlines which give business class passengers more value for their money.

Good overall. Seat spacing a bit tight between IST and ISB.

Excellent staff despite some trying passenger situations. Very impressed with their good attitudes and kindness.

Crew were unfriendly, touch screen for movies didn't work very well, seats were tight and uncomfortable

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

I checked a bag and there was only one agent to assist all customers with any issues.

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Worth every penny to upgrade to BC. Treated and felt more like First Class

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Everything you need to know for your flight from St. Louis to Istanbul

Information on your arrival and departure airports