- Regular
- StudentStudent Fare
Only students above 12 years of age are eligible for special fares and/or additional baggage allowances. Carrying valid student ID cards and student visas (where applicable) is mandatory, else the passenger may be denied boarding or asked to pay for extra baggage.
Popular Filters
Arrival Airports
One Way Price
Duration
Stops From Kolkata
Departure From Kolkata
₹ 20,518
₹ 20,518
₹ 20,518
₹ 20,518
Arrival at Istanbul
₹ 76,667
₹ 20,518
₹ 42,773
₹ 26,222
Alliances & Airlines
Oneworld
(32)
SkyTeam
(2)
Star Alliance
(81)
+ 10 more
Layover Airports
+ 8 more
Layover Duration
Further Flights From Kolkata (CCU)
Further Flights From Istanbul (IST)
Top International Routes
Top International Cities

Up to 35% OFF* on Flights.
23rd Aug'25
Popular Hotels in Kolkata
Hotels in Kolkata
Premium Hotels Nearby Kolkata
Popular Hotels in Istanbul
Hotels in Istanbul
Premium Hotels Nearby Istanbul
Trains from Kolkata
Trains to Kolkata
Kolkata to Istanbul Flights, Fares @ ₹20518 + Flat Rs 1500 OFF
₹ 20,518
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 5065
02:00
Tue, 2 Sep 25
Kolkata, India
02 h 40 m
04:40
Tue, 2 Sep 25
Terminal T1
Mumbai, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 17
07:15
Tue, 2 Sep 25
Terminal T2
Mumbai, India
06 h 50 m
11:35
Tue, 2 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 20,518
GOSPECIAL
Fare by Goibibo
₹ 20,468
Flexi plus
Fare offered by airline.
₹ 26,871
SUPER 6E
Fare offered by airline.
₹ 28,708
₹ 20,843
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 2415
22:30
Tue, 2 Sep 25
Kolkata, India
02 h 30 m
01:00
Wed, 3 Sep 25
Terminal T1
New Delhi, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 11
06:55
Wed, 3 Sep 25
Terminal T3
New Delhi, India
07 h 05 m
11:30
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 20,843
GOSPECIAL
Fare by Goibibo
₹ 20,793
Flexi plus
Fare offered by airline.
₹ 29,198
SUPER 6E
Fare offered by airline.
₹ 30,563
₹ 20,969
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 5128
19:05
Tue, 2 Sep 25
Kolkata, India
03 h
22:05
Tue, 2 Sep 25
Terminal T1
Mumbai, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 17
07:15
Wed, 3 Sep 25
Terminal T2
Mumbai, India
06 h 50 m
11:35
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 20,969
GOSPECIAL
Fare by Goibibo
₹ 20,919
Flexi plus
Fare offered by airline.
₹ 27,479
SUPER 6E
Fare offered by airline.
₹ 29,159
₹ 21,221
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 2396
14:30
Tue, 2 Sep 25
Kolkata, India
02 h 30 m
17:00
Tue, 2 Sep 25
Terminal T1
New Delhi, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 11
06:55
Wed, 3 Sep 25
Terminal T3
New Delhi, India
07 h 05 m
11:30
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 21,221
GOSPECIAL
Fare by Goibibo
₹ 21,171
Flexi plus
Fare offered by airline.
₹ 29,290
SUPER 6E
Fare offered by airline.
₹ 30,963
₹ 21,315
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 6183
18:00
Tue, 2 Sep 25
Kolkata, India
02 h 25 m
20:25
Tue, 2 Sep 25
Terminal T1
New Delhi, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 11
06:55
Wed, 3 Sep 25
Terminal T3
New Delhi, India
07 h 05 m
11:30
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 21,315
GOSPECIAL
Fare by Goibibo
₹ 21,265
Flexi plus
Fare offered by airline.
₹ 29,684
SUPER 6E
Fare offered by airline.
₹ 31,049
₹ 21,469
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 6206
16:20
Tue, 2 Sep 25
Kolkata, India
02 h 55 m
19:15
Tue, 2 Sep 25
Terminal T2
Mumbai, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 17
07:15
Wed, 3 Sep 25
Terminal T2
Mumbai, India
06 h 50 m
11:35
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 21,469
GOSPECIAL
Fare by Goibibo
₹ 21,419
Flexi plus
Fare offered by airline.
₹ 27,979
SUPER 6E
Fare offered by airline.
₹ 29,659
₹ 21,599
Use code GODEALS and get Rs 1000 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
IndiGo 6E 5198
10:05
Tue, 2 Sep 25
Kolkata, India
02 h 25 m
12:30
Tue, 2 Sep 25
Terminal T3
New Delhi, India
BAGGAGE : CHECK INCABIN
Information not available
IndiGo 6E 11
06:55
Wed, 3 Sep 25
Terminal T3
New Delhi, India
07 h 05 m
11:30
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Saver
Fare offered by airline.
₹ 21,599
GOSPECIAL
Fare by Goibibo
₹ 21,549
Flexi plus
Fare offered by airline.
₹ 29,999
SUPER 6E
Fare offered by airline.
₹ 31,364
₹ 26,222
Use code GODEALS and get Rs 1310 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul-Sabiha Gokcen , 2 Sep
Air Arabia Abu Dhabi 3L 167
22:00
Tue, 2 Sep 25
Kolkata, India
05 h
01:30
Wed, 3 Sep 25
Terminal A
Abu Dhabi, United Arab Emirates
BAGGAGE : CHECK INCABIN
Information not available
Air Arabia Abu Dhabi 3L 363
18:55
Wed, 3 Sep 25
Terminal A
Abu Dhabi, United Arab Emirates
04 h 50 m
22:45
Wed, 3 Sep 25
Istanbul-Sabiha Gokcen, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Basic
Fare offered by airline.
₹ 26,222
Value
Fare offered by airline.
₹ 28,894
₹ 42,773
Use code GODEALS and get Rs 1310 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
Qatar Airways QR 541
03:50
Tue, 2 Sep 25
Kolkata, India
04 h 55 m
06:15
Tue, 2 Sep 25
Doha, Qatar
BAGGAGE : CHECK INCABIN
Information not available
Qatar Airways QR 239
07:40
Tue, 2 Sep 25
Doha, Qatar
04 h 15 m
11:55
Tue, 2 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Economy classic
Fare offered by airline.
₹ 20,910
₹ 11,330
₹ 42,773
GOSPECIAL
Fare by Goibibo
₹ 11,330
₹ 6,535
₹ 83,290
Economy convenience
Fare offered by airline.
₹ 11,330
₹ 6,535
₹ 83,303
Economy comfort
Fare offered by airline.
₹ 6,535
₹ 4,360
₹ 1,85,678
₹ 47,601
Use code GODEALS and get Rs 1310 discount or use GOHSBCINTEMI / GOSBIINTEMI to get upto 10% discount on HSBC and SBI Credit Cards
Kolkata to Istanbul , 2 Sep
Turkish Airlines TK 4736 | Operated By IndiGo
22:15
Tue, 2 Sep 25
Kolkata, India
02 h 45 m
01:00
Wed, 3 Sep 25
Terminal T2
Mumbai, India
BAGGAGE : CHECK INCABIN
Information not available
Turkish Airlines TK 4751 | Operated By IndiGo
07:15
Wed, 3 Sep 25
Terminal T2
Mumbai, India
06 h 50 m
11:35
Wed, 3 Sep 25
Istanbul, Turkey
BAGGAGE : CHECK INCABIN
Information not available
Eco Fly
Fare offered by airline.
₹ 47,601
Extra Fly
Fare offered by airline.
₹ 13,940
₹ 6,970
₹ 49,303
Flex Fly
Fare offered by airline.
₹ 8,715
₹ 4,360
₹ 52,210
Prime Fly
Fare offered by airline.
₹ 60,166
Kolkata Istanbul Cheap Flights | Fare | Date |
---|---|---|
Lowest Airfare Today | Rs 25738 |
21 Aug
|
Cheapest Fare Within 30 Days | Rs 20518 |
02 Sep
|
Cheapest Fare Within 90 Days | Rs 20518 |
02 Sep
|
Cheapest Fare Within 365 Days | Rs 20518 |
02 Sep
|
Get cheap flights from Kolkata to Istanbul with Goibibo India
Q: Why choose Goibibo for your flight booking from Kolkata to Istanbul?
A: Goibibo lets you search and compare flight tickets to various destinations with just a click. There is a huge inventory of airlines for you to choose from, and exciting deals and discounts so that you can book your flight tickets at reasonable prices. You can always reach out to Goibibo customer care for any help.
Q: How to get a cheap flight ticket from Kolkata to Istanbul?
A: At Goibibio, it’s very simple to find cheap flights. • After entering the source and destination on the home page, you will get a list of flights. Click on the ‘Cheapest’ filter below to see the cheapest flights first. • You can also grab a cheap flight booking by setting up an alert for Kolkata to Istanbul flights. Goibibo will let you know whenever there is a price drop for your flight. What’s the best time to book a flight from Kolkata to Istanbul? • For a cheap domestic flight, try booking 3-4 weeks in advance. • For an international flight, you must book at least 7-8 weeks ahead for a better price. • You can also check the calendar view while booking to compare the prices for various dates. • Set up a price alert to get notified about the best prices for your flight from Kolkata to Istanbul.
Q: What should you keep in mind while booking a flight from Kolkata to Istanbul?
A: At Goibibo, you can compare flights from all major airlines at one go. Always keep an eye out for the best offers on your Kolkata to Istanbul flight. Plus, there are no hidden charges when you book a Kolkata to Istanbul flight on Goibibo.
Q: Is there any discount on a flight booking from Kolkata to Istanbul?
A: Goibibo always has discount offers running on flights. You can find many coupons on the website and app for your Kolkata to Istanbul booking. While booking, you can choose the best coupon from the list for an instant discount on your tickets.
Kolkata to Istanbul Flights
Searching for Kolkata to Istanbul cheap flights? Then, Goibibo is your one-stop destination to book Kolkata to Istanbul flight in a hassle-free manner. It is one such platform that brings forth all the options for you at one place and lets you book the most suitable flight with the best deals and offers.
There is no dearth of options when it comes to Kolkata to Istanbul Flight booking. Several budget and premium airlines fly on this route. You can easily check the Kolkata to Istanbul flight schedule on Goibibo. There are approximately 91 flights flying daily between Kolkata and Istanbul from early morning to late at night. Out of these Kolkata to Istanbul flight, 0 are non stop flights 91 are connecting flights. Air Arabia Abu Dhabi, Air France, Air India, British Airways, Emirates, Etihad Airways, IndiGo, KLM Royal Dutch, LOT Polish Airlines, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, SpiceJet, Thai Airways, Turkish Airlines are some major airlines that fly between Kolkata and Istanbul.
The lowest airfare of Kolkata to Istanbul flight is ₹20518 and the average airfare is 65987 depending on the airline, timings and availability. So, it is advisable to book domestic flights 2-3 weeks well in advance to avail minimum airfare. You can also book Kolkata to Istanbul cheap flights if you are flexible with your dates and timings.
You will board your Kolkata to Istanbul flight from the Netaji Subhash Chandra Bose International Airport and deboard it at Ataturk.
You cannot only book Kolkata to Istanbul cheap flight tickets through Goibibo but can also do web check-in and track your flight status.
How to book a Kolkata to Istanbul flight ticket on Goibibo?
Booking flight tickets on Goibibo is very simple. For a Kolkata to Istanbul flight, check below:
How can I check the flight schedule for a Kolkata to Istanbul flight?
To check the Kolkata to Istanbul flight schedule,
How much baggage can I carry on my Kolkata to Istanbul flight?
Baggage allowance depends on the class of travel and airline. In the Kolkata to Istanbul Air India flight, 25 kg of checked baggage is allowed, while 8 kg of hand luggage is permitted. On the other hand, in all domestic IndiGo flights, a passenger can carry 7 kg of hand luggage and 15 kg of checked baggage.
Where will I board my flight at Kolkata and deboard at Istanbul?
When you have booked a Kolkata to Istanbul flight, you will board the flight at and de-board at .
How can I do web check-in for my upcoming Kolkata at Istanbul flight?
To avail the web check-in service and avoid queues at airports, you have to visit the official airline websites. Commonly, you have to fill the cities of departure and arrival, PNR number and last name to select your preferred seats and meals.
About Istanbul
Istanbul is a wonderful holiday destination that wraps every tourist's heart with the modern lifestyle on the traditional edge. The modern skyscrapers dotting the skyline and delicately carved ancient monuments welcome tourists from all over the world. Istanbul is a city that presents travelers with both Asian and European facets across the Bosphorus Strait. Because of this passage, Istanbul remained the capital city of famous Roman, Byzantine and Ottoman Empire for several decades. If you happen to be in this city, do not forget to take the Turkish bath - Hammam. The locals are generous and very hospitable and might offer you tea at their homes or teahouses. To enjoy Istanbul, the most, take ferry rides, visit the local teahouses, pubs, taste the local drink - raki, and leisurely enjoy the sightseeing places. Also, hotels in Istanbul are another level of luxury.
Best Time to Visit
Istanbul experiences summers and winters on a little extreme level. It is visited year-round, but mostly in the spring and autumn season from April to May and from September to November. These months are considered ideal for holidays in Istanbul. However, many tourists prefer to visit this destination in the winter as well to experience chilly winters and snow.
Places to Visit
Some of the all-time favourite Places to Visit in Istanbul are The Hagia Sophia Museum, The Blue Mosque, Topkapi Palace Museum, Basilica Cistern, the Prince Islands, Aya Sofya, and Suleymaniye Mosque. All these places reflect the grandeur of dynasties that once ruled here with great architectural splendour. On the Asian side of Istanbul, worth visiting places are Beylerbeyi Palace and Camlica Hill. Kadikoy and Bagdat Caddesi are full of shopping places, restaurants and cafes. The Galata area in the city is a vibrant place that offers upscale boutiques, markets and Galata Bridge is known for fishing. The Spice Bazaar and Grand Bazaar are a few happening places for tourists to shop everything varying from tea, spices, carpets, leather, jewellery and dry fruits.
Food and Restaurants
Some of the authentic must-try dishes include Menemen, Meze, Kuyu Kebabi, Adana Kebab and Kunefe. Popular places in the city to dine at are Nicole Restaurant, Gram Kanyon, Adana Ocakbasi, Karadeniz Pide ve Döner Salonu and more. Beyoglu is a famous place in the city for upscale wine and dine.
Transportation
Istanbul has well-maintained connections to many countries of the world via various transport channels. Tourists travelling via air de-board at Istanbul Ataturk Airport (IST). There are plenty of international flights that connect the city to different cities such as Delhi, Paris, Cairo, Dubai, Seoul, New York and more. New Delhi and Mumbai receive plenty of direct flights from Istanbul via Turkish Airlines and Air India. Several other cities of India connect to Istanbul via connecting flights. Cheap flight tickets from here to other popular cities can be booked online on Goibibo. Also, flight status & other details related to flight booking & air tickets can be easily accessed on it. So for cheapest air tickets, it is recommended to book flights online. Rail routes are well laid across the city that receives trains from many parts of the country and also from European and Asian countries as well. The trains coming to Istanbul from Asian countries arrive at Haydarpasa Station and from European countries arrive at Sirkeci Station. Same as trains, many buses ply from Istanbul to cities of Greece, Romania, Bulgaria. A number of cruise and ferry services also operate from Istanbul that connect to European countries.
About Kolkata
Set on the banks of the Hooghly River, the City of Joy, Kolkata is one amongst India’s significant metropolitan cities. Immersed in authentic Bengali culture and rich colonial history of the country, the city holds a distinctive splendor. The city balances its glorious past and modern day urbanization flawlessly. Against the backdrop of the calm river, the city showcases beautiful sunrise and sunset views that are worth experiencing. Kolkata has been home to revered artists and revolutionaries whose brilliant works are explicitly highlighted in the various art galleries.
Best Time to Visit
The months between October-March are ideal to visit the city, as the climate remains pleasant allowing travelers to explore the city comfortably. Search and book best Kolkata hotels at cheap price from Goibibo.
Places to Visit
Howrah Bridge is one of the largest and busiest bridges of the world and is a star attraction of the city. Victoria Memorial, Fort William Kolkata and Birla Planetarium are some of the famous historical sites that portray excellent architecture of ancient times and also give deep insights about the vast history. The Indian Museum, Marble Palace Mansion, Birla Temple and Prinsep Ghat are some of the other important tourist spots of the city. From local markets to malls, the city has plenty of shopping destinations that will offer you a good shopping experience. New Market, Gariahat Market and Bara Bazaar are some of the famous markets while South City Mall and Quest Mall are popular malls.
Hotels and Restaurants
The authentic Bengali cuisine of the city is a must-try. Some of the local delicacies that you must savour are Fish Curry, Alu Dum and Luchi, Puchka and Kathi Rolls. For all the dessert lovers, the city offers some amazing sweets like Rasgullas, Mishti Doi and Sondesh.
Kolkata offers all kind of accommodation options for stay. Right from Budget Hotels in Kolkata to Luxury Hotels in Kolkata/ Resorts in Kolkata, from 5 star Kolkata hotels to service apartments, one can find multiple options as per their need and pocket. Goibibo being the leading travel website has largest collection of hotels on its platform. One can easily find various collection of hotels as well on Goibibo, like couple friendly hotels in Kolkata to hotels preferred by Business travellers in Kolkata, similarly hotels preferred by students and also the ones preferred by women. Popular locations in Kolkata for stay are near Kolkata Airport, Salt Lake, Rajarhat, Park Street and New Town. It is very easy and convenient to compare and book hotels online on Goibibo.
Transportation
The city has a well-planned and systematic transportation network that makes intercity and intracity travel convenient. Located in Dum Dum, 17 km away from the main city, Netaji Subhas Chandra Bose International Airport (CCU) caters to domestic flights as well as international flights. The airport serves as a major hub for flights to international locations such as Bhutan, Bangladesh and China. Airlines such as Asia, Air India, Indigo and GoAir fly maximum number of regular domestic routes. Cheap flight tickets from here to other popular cities can be booked online on Goibibo. Also, flight status & other details related to flight booking & air tickets can be easily accessed on it. So for cheapest air tickets, it is recommended to book flights online. The city has four railway stations in and around Howrah, Sealdah, Chitpur and Shalimar. The state run Kolkata buses connect the city with the neighboring cities of Siliguri, Digha and Bakkhali.
Within the city, public transport includes metro services, trams, local trains, private cabs and auto rickshaws.
Airport Address
Netaji Subhash Chandra Bose,International Airport, Dum Dum, Kolkata - 700 052. ENQUIRIES PHONE NUMBER: +91 33 2511 8787,FLIGHT INFORMATION NO : +91 33 2511 8787,AIRPORT MANAGER (INT) : +91 33 2511 9172,AIRPORT MANAGER (DOM) : +91 33 2511 8318
Frequently Asked Questions - Kolkata to Istanbul Flights
Q: What is today’s cheapest fare from Kolkata to Istanbul?
A: Today lowest airfare on Kolkata to Istanbul flight route is 25738.
Q: What are the name and codes for Kolkata and Istanbul airports?
A: The name of Kolkata airport is Netaji Subhash Chandra Bose International Airport and its code is CCU and name of Istanbul Airport is Ataturk, its code is IST.
Q: When does the first flight leave from Kolkata to Istanbul?
A: The first flight from Kolkata to Istanbul is Malaysia Airlines at 00:40.
Q: Which are the most preferred airlines from Kolkata to Istanbul ?
A: Air Arabia Abu Dhabi, Air France, Air India, British Airways, Emirates, Etihad Airways, IndiGo, KLM Royal Dutch, LOT Polish Airlines, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, SpiceJet, Thai Airways, Turkish Airlines are the most preferred airlines on Kolkata to Istanbul flight route.
Q: How many flights fly from Kolkata to Istanbul on the daily basis?
A: Around 91 flights are flying daily from Kolkata to Istanbul. Out of which 0 are direct and 91 are connecting flights on this route. Some major airlines between this route are Air Arabia Abu Dhabi, Air France, Air India, British Airways, Emirates, Etihad Airways, IndiGo, KLM Royal Dutch, LOT Polish Airlines, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, SpiceJet, Thai Airways, Turkish Airlines.
Q: Which is the last flight on Kolkata to Istanbul route?
A: The last flight from Kolkata to Istanbul route is Air India, Turkish Airlines at 23:45.
Q: Which is the cheapest flight from Kolkata to Istanbul in next 7 and next 30 days?
A: Cheapest flight in next 7 days on Kolkata to Istanbul route is at ₹30608. And in next 30 days lowest price on Kolkata to Istanbul route is ₹20518.
Q: Which airline has maximum number for flights between Kolkata to Istanbul?
A: Out of 91 daily flights between Kolkata to Istanbul Air India has maximum 49 flights. After that Qatar Airways has 30, Turkish Airlines has 27, IndiGo has 18, Emirates has 5, Lufthansa has 2, Air Arabia Abu Dhabi has 1, Air France has 1, British Airways has 1, Etihad Airways has 1, KLM Royal Dutch has 1, LOT Polish Airlines has 1, Malaysia Airlines has 1, Singapore Airlines has 1, SpiceJet has 1, Thai Airways has 1 flights between Kolkata to Istanbul.
