- 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
One Way Price
Duration
Stops From New Delhi
Departure From New Delhi
₹ 84,776
₹ 50,926
₹ 86,008
₹ 1,17,104
Arrival at Kos
₹ 1,15,097
₹ 51,180
₹ 50,926
Alliances & Airlines
Oneworld
(20)
SkyTeam
(5)
Star Alliance
(47)
+ 4 more
Layover Airports
+ 5 more
Layover Duration
Further Flights From Delhi (DEL)
Top International Routes
Top International Cities
Up to 12% OFF* on Flights.
21st Dec'25
Popular Hotels in Delhi
Hotels in Delhi
Premium Hotels Nearby Delhi
Trains from Delhi
Trains to Delhi
Trains from Kos
Trains to Kos
Delhi to Kos Flights, Fares @ ₹50926 + Flat Rs 1500 OFF
₹ 50,926
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Qatar Airways QR 571
09:55
Sat, 20 Dec 25
Terminal T3
New Delhi, India
04 h 30 m
11:55
Sat, 20 Dec 25
Doha, Qatar
BAGGAGE : CHECK INCABIN
Information not available
Qatar Airways QR 207
14:20
Sat, 20 Dec 25
Doha, Qatar
04 h 40 m
18:00
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 224
20:15
Sat, 20 Dec 25
Athens, Greece
01 h
21:15
Sat, 20 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy classic
Fare offered by airlines.
₹ 11,790
₹ 50,926
Economy convenience
Fare offered by airlines.
₹ 6,805
₹ 91,758
Economy comfort
Fare offered by airlines.
₹ 4,535
₹ 1,81,547
₹ 51,180
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Qatar Airways QR 571
09:55
Sat, 20 Dec 25
Terminal T3
New Delhi, India
04 h 30 m
11:55
Sat, 20 Dec 25
Doha, Qatar
BAGGAGE : CHECK INCABIN
Information not available
Qatar Airways QR 203
07:30
Sun, 21 Dec 25
Doha, Qatar
04 h 40 m
11:10
Sun, 21 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 222
14:45
Sun, 21 Dec 25
Athens, Greece
01 h
15:45
Sun, 21 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy classic
Fare offered by airlines.
₹ 11,790
₹ 51,180
Economy convenience
Fare offered by airlines.
₹ 6,805
₹ 92,028
Economy comfort
Fare offered by airlines.
₹ 4,535
₹ 1,81,816
₹ 51,523
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Qatar Airways QR 571
09:55
Sat, 20 Dec 25
Terminal T3
New Delhi, India
04 h 30 m
11:55
Sat, 20 Dec 25
Doha, Qatar
BAGGAGE : CHECK INCABIN
Information not available
Qatar Airways QR 207
14:20
Sat, 20 Dec 25
Doha, Qatar
04 h 40 m
18:00
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 222
14:45
Sun, 21 Dec 25
Athens, Greece
01 h
15:45
Sun, 21 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy classic
Fare offered by airlines.
₹ 21,765
₹ 11,790
₹ 51,523
Economy convenience
Fare offered by airlines.
₹ 11,790
₹ 6,805
₹ 87,542
Economy comfort
Fare offered by airlines.
₹ 6,805
₹ 4,535
₹ 1,73,205
₹ 51,780
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Qatar Airways QR 571
09:55
Sat, 20 Dec 25
Terminal T3
New Delhi, India
04 h 30 m
11:55
Sat, 20 Dec 25
Doha, Qatar
BAGGAGE : CHECK INCABIN
Information not available
Qatar Airways QR 203
07:30
Sun, 21 Dec 25
Doha, Qatar
04 h 40 m
11:10
Sun, 21 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 224
20:15
Sun, 21 Dec 25
Athens, Greece
01 h
21:15
Sun, 21 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy classic
Fare offered by airlines.
₹ 21,765
₹ 11,790
₹ 51,780
Economy convenience
Fare offered by airlines.
₹ 11,790
₹ 6,805
₹ 87,799
Economy comfort
Fare offered by airlines.
₹ 6,805
₹ 4,535
₹ 1,73,462
₹ 75,657
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
LOT Polish Airlines LO 72
07:20
Sat, 20 Dec 25
Terminal T3
New Delhi, India
08 h 30 m
11:20
Sat, 20 Dec 25
Warsaw, Poland
BAGGAGE : CHECK INCABIN
Information not available
LOT Polish Airlines LO 603
15:20
Sat, 20 Dec 25
Warsaw, Poland
02 h 45 m
19:05
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 224
20:15
Sat, 20 Dec 25
Athens, Greece
01 h
21:15
Sat, 20 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy standard
Fare offered by airlines.
₹ 10,000
₹ 75,657
Economy semi flex
Fare offered by airlines.
₹ 4,500
₹ 80,980
Economy full flex
Fare offered by airlines.
₹ 86,303
Premium standard
Fare offered by airlines.
₹ 1,44,752
₹ 82,291
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
LOT Polish Airlines LO 72
07:20
Sat, 20 Dec 25
Terminal T3
New Delhi, India
08 h 30 m
11:20
Sat, 20 Dec 25
Warsaw, Poland
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 771
15:15
Sat, 20 Dec 25
Warsaw, Poland
02 h 30 m
18:45
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Sky Express GQ 224
20:15
Sat, 20 Dec 25
Athens, Greece
01 h
21:15
Sat, 20 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy semi flex
Fare offered by airlines.
₹ 4,500
₹ 82,291
Economy full flex
Fare offered by airlines.
₹ 94,468
Premium standard
Fare offered by airlines.
₹ 1,53,928
₹ 84,776
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Lufthansa LH 763
01:55
Sat, 20 Dec 25
Terminal T3
New Delhi, India
08 h 40 m
06:05
Sat, 20 Dec 25
Terminal T2
Munich, Germany
BAGGAGE : CHECK INCABIN
Information not available
Lufthansa LH 1752
08:35
Sat, 20 Dec 25
Terminal T2
Munich, Germany
02 h 25 m
12:00
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Aegean Airlines A3 226 | Operated By Olympic Air
19:00
Sat, 20 Dec 25
Athens, Greece
01 h 05 m
20:05
Sat, 20 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy saver
Fare offered by airlines.
₹ 15,980
₹ 84,776
Economy base
Fare offered by airlines.
₹ 15,980
₹ 92,173
Flex
Fare offered by airlines.
₹ 1,02,528
Premium economy saver
Fare offered by airlines.
₹ 21,305
₹ 1,34,940
₹ 86,008
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Lufthansa LH 761
03:35
Sat, 20 Dec 25
Terminal T3
New Delhi, India
09 h
08:05
Sat, 20 Dec 25
Terminal T1
Frankfurt, Germany
BAGGAGE : CHECK INCABIN
Information not available
Lufthansa LH 1280
09:50
Sat, 20 Dec 25
Terminal T1
Frankfurt, Germany
02 h 45 m
13:35
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Aegean Airlines A3 226 | Operated By Olympic Air
19:00
Sat, 20 Dec 25
Athens, Greece
01 h 05 m
20:05
Sat, 20 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy saver
Fare offered by airlines.
₹ 15,980
₹ 86,008
Economy base
Fare offered by airlines.
₹ 15,980
₹ 93,405
Flex
Fare offered by airlines.
₹ 1,03,760
Premium economy saver
Fare offered by airlines.
₹ 21,305
₹ 1,36,173
₹ 86,008
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Lufthansa LH 7253 | Operated By Air India
13:40
Sat, 20 Dec 25
Terminal T3
New Delhi, India
09 h 35 m
18:45
Sat, 20 Dec 25
Terminal T1
Frankfurt, Germany
BAGGAGE : CHECK INCABIN
Information not available
Lufthansa LH 1284
20:40
Sat, 20 Dec 25
Terminal T1
Frankfurt, Germany
02 h 45 m
00:25
Sun, 21 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Aegean Airlines A3 222 | Operated By Olympic Air
11:00
Sun, 21 Dec 25
Athens, Greece
01 h 05 m
12:05
Sun, 21 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy saver
Fare offered by airlines.
₹ 15,980
₹ 86,008
Economy base
Fare offered by airlines.
₹ 15,980
₹ 93,405
Flex
Fare offered by airlines.
₹ 1,03,760
₹ 86,008
Get Flat Rs 1350 OFF using code GODEALS | Get Flat 2000 OFF on HDFC bank Credit Card using code HDFCINTEMI
New Delhi to Kos , 20 Dec
Lufthansa LH 761
03:35
Sat, 20 Dec 25
Terminal T3
New Delhi, India
09 h
08:05
Sat, 20 Dec 25
Terminal T1
Frankfurt, Germany
BAGGAGE : CHECK INCABIN
Information not available
Lufthansa LH 1282
12:50
Sat, 20 Dec 25
Terminal T1
Frankfurt, Germany
02 h 45 m
16:35
Sat, 20 Dec 25
Athens, Greece
BAGGAGE : CHECK INCABIN
Information not available
Aegean Airlines A3 222 | Operated By Olympic Air
11:00
Sun, 21 Dec 25
Athens, Greece
01 h 05 m
12:05
Sun, 21 Dec 25
Kos, Greece
BAGGAGE : CHECK INCABIN
Information not available
Economy saver
Fare offered by airlines.
₹ 15,980
₹ 86,008
Economy base
Fare offered by airlines.
₹ 15,980
₹ 93,405
Flex
Fare offered by airlines.
₹ 1,03,760
Premium economy saver
Fare offered by airlines.
₹ 21,305
₹ 1,36,173
| Delhi Kos Cheap Flights | Fare | Date |
|---|---|---|
| Lowest Airfare Today | Rs 0 |
20 Dec
|
| Cheapest Fare Within 30 Days | Rs null |
20 Dec
|
| Cheapest Fare Within 90 Days | Rs null |
20 Dec
|
| Cheapest Fare Within 365 Days | Rs null |
20 Dec
|
Get cheap flights from Delhi to Kos with Goibibo India
Q: Why choose Goibibo for your flight booking from Delhi to Kos?
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 Delhi to Kos?
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 Delhi to Kos 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 Delhi to Kos? • 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 Delhi to Kos.
Q: What should you keep in mind while booking a flight from Delhi to Kos?
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 Delhi to Kos flight. Plus, there are no hidden charges when you book a Delhi to Kos flight on Goibibo.
Q: Is there any discount on a flight booking from Delhi to Kos?
A: Goibibo always has discount offers running on flights. You can find many coupons on the website and app for your Delhi to Kos booking. While booking, you can choose the best coupon from the list for an instant discount on your tickets.
Delhi to Kos Flights
Searching for Delhi to Kos cheap flights? Then, Goibibo is your one-stop destination to book Delhi to Kos 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 Delhi to Kos Flight booking. Several budget and premium airlines fly on this route. You can easily check the Delhi to Kos flight schedule on Goibibo. There are approximately 46 flights flying daily between Delhi and Kos from early morning to late at night. Out of these Delhi to Kos flight, 0 are non stop flights 46 are connecting flights. Aegean Airlines, Air France, Emirates, KLM Royal Dutch, LOT Polish Airlines, Lufthansa, Qatar Airways, Sky Express, Swiss, Turkish Airlines are some major airlines that fly between Delhi and Kos.
The lowest airfare of Delhi to Kos flight is ₹50926 and the average airfare is 115097 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 Delhi to Kos cheap flights if you are flexible with your dates and timings.
You will board your Delhi to Kos flight from the Indira Gandhi International Airport and deboard it at Kos.
You cannot only book Delhi to Kos cheap flight tickets through Goibibo but can also do web check-in and track your flight status.
How to book a Delhi to Kos flight ticket on Goibibo?
Booking flight tickets on Goibibo is very simple. For a Delhi to Kos flight, check below:
How can I check the flight schedule for a Delhi to Kos flight?
To check the Delhi to Kos flight schedule,
How much baggage can I carry on my Delhi to Kos flight?
Baggage allowance depends on the class of travel and airline. In the Delhi to Kos 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 Delhi and deboard at Kos?
When you have booked a Delhi to Kos flight, you will board the flight at and de-board at .
How can I do web check-in for my upcoming Delhi at Kos 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 Kos
About Delhi
Delhi, the capital of India, is an epicenter of history, culture, politics, and commerce. It’s a sprawling metropolitan city that attracts travelers from across the globe, offering a unique blend of traditional heritage and modern infrastructure. Whether you are visiting for a business trip, a family holiday, or exploring Delhi’s rich cultural history, booking flights to Delhi will open the door to a myriad of experiences.
From the majestic Red Fort to the bustling lanes of Chandni Chowk, Delhi has something for every traveler. With an extensive public transport network, world-class facilities, and a rich array of tourist attractions, it’s no wonder why Delhi remains a popular destination for domestic and international travelers alike.
Best Time to Visit Delhi
Delhi’s climate varies significantly throughout the year. To get the most out of your trip, choosing the right time to visit Delhi is key.
The best time to visit Delhi is from October to March. During these months, the city experiences cooler weather, with pleasant temperatures ranging from 10°C to 25°C. The Delhi winter season is famous for its festivals, cultural events, and outdoor activities, making it the peak tourist season. The Diwali festival in October or November, the Republic Day Parade in January, and the Dussehra celebrations are just a few reasons why this time is ideal for sightseeing.
In contrast, April to June sees the summer season, with temperatures rising above 40°C, making it quite hot for outdoor activities. Flights to Delhi may be less expensive during the summer months, but it can be challenging to explore the city due to the heat.
The monsoon season, from July to September, brings moderate rainfall, which can sometimes lead to travel disruptions. However, this is also the time when Delhi’s green spaces are at their best, and the city tends to be less crowded with tourists.
Top Places to Visit in Delhi
Delhi is home to a diverse range of attractions that cater to both history buffs and modern travelers.
Red Fort (Lal Qila)
A UNESCO World Heritage Site, the Red Fort is one of the most iconic landmarks in Delhi. Built in the 17th century, it offers a glimpse into Mughal architecture and is a must-visit for anyone interested in India’s history.
Qutub Minar
Another UNESCO World Heritage Site, the Qutub Minar is the tallest brick minaret in the world. Its intricate carvings and historical significance make it an essential stop for tourists.
India Gate
A memorial to soldiers who died during World War I, the India Gate is a national symbol of pride and a favorite picnic spot for families and travelers.
Humayun’s Tomb
A precursor to the Taj Mahal, Humayun’s Tomb is a stunning example of Mughal architecture and an essential visit for those keen on exploring Delhi’s history.
Jama Masjid
One of the largest mosques in India, Jama Masjid stands in stark contrast to the modern cityscape, offering a peaceful retreat in the heart of Old Delhi.
Lotus Temple
Known for its lotus-shaped structure, the Lotus Temple is a Bahá’í House of Worship and a serene place for meditation and reflection.
Chandni Chowk
A bustling marketplace in Old Delhi, Chandni Chowk is perfect for shopping, tasting street food, and soaking in the local atmosphere. The nearby Red Fort and Jama Masjid add historical context to the area.
Akshardham Temple
A modern architectural marvel, Akshardham Temple showcases India’s cultural heritage through its stunning exhibitions and boat rides. The light and sound show in the evening is a popular attraction.
Delhi Airport Details – Indira Gandhi International Airport (DEL)
Delhi is served by Indira Gandhi International Airport (DEL), one of the busiest airports in India and a major international gateway. With both domestic and international flights to Delhi, the airport sees millions of passengers each year, making it a crucial travel hub for the region.
Key Highlights of Indira Gandhi International Airport (DEL):
- Terminal 1: Handles domestic flights for budget airlines like Indigo, SpiceJet, and GoAir.
- Terminal 2: Serves as the domestic terminal for international connections (Air India, Vistara, and others).
- Terminal 3: The international terminal, offering state-of-the-art amenities like lounges, duty-free shopping, luxury dining options, and more.
The airport is located about 15 km from central Delhi and is connected by a range of transport options. If you’re traveling on international flights to Delhi, you can expect top-tier facilities, including currency exchange, lounges, and premium services.
Local Transportation in Delhi
Delhi has a robust transportation network, making it easy to navigate the city.
Delhi Metro
The Delhi Metro is one of the best ways to travel around the city. It offers quick, affordable, and air-conditioned travel to various parts of the city, including the airport, and is a favored choice for both locals and tourists.
Buses
Delhi’s public buses, operated by the Delhi Transport Corporation (DTC), are an affordable option for getting around. They cover all parts of the city and are a convenient travel method for budget-conscious tourists.
Auto Rickshaws and Cycle Rickshaws
Auto and cycle rickshaws are ubiquitous in Delhi and can be hailed from most major streets. They are suitable for short trips within the city.
Taxis & Ride-Hailing Services
For a more comfortable travel experience, taxis and app-based ride-hailing services like Uber and Ola are widely available throughout the city.
Car Rentals
For visitors seeking flexibility, car rental services with or without a driver are readily available in Delhi.
Why Book Flights to Delhi?
Delhi is a global city that attracts people from all walks of life. With strong connectivity, the capital is one of India’s most popular destinations for business travelers, tourists, and students alike.
Delhi is not just the political center of India; it is also a hub for commerce, education, and culture. The city offers high-end shopping malls, luxury hotels, historic sites, cultural festivals, and is a gateway to exploring other parts of North India.
If you’re looking for cheap flights to Delhi, consider booking in advance to take advantage of the best Delhi flight deals. With multiple flight options and competitive pricing, booking flights to Delhi is convenient and affordable.
Whether you are visiting for business, leisure, or education, Delhi flights bring you closer to the heart of India.
Airport Address
Indira Gandhi International Airport,Domestic terminal,Terminal 1-B,New Delhi-110 037,ENQUIRIES PHONE NUMBER: (91) 11 25661080, FLIGHT INFORMATION NO: (91) 11 25601000 (DOM)/ (91) 11 25602000 (INT)
Frequently Asked Questions - Delhi to Kos Flights
Q: Which are the most preferred airlines from Delhi to Kos ?
A: Aegean Airlines, Air France, Emirates, KLM Royal Dutch, LOT Polish Airlines, Lufthansa, Qatar Airways, Sky Express, Swiss, Turkish Airlines are the most preferred airlines on Delhi to Kos flight route.
Q: What are the name and codes for Delhi and Kos airports?
A: The name of Delhi airport is Indira Gandhi International Airport and its code is DEL and name of Kos Airport is Kos, its code is KGS.
Q: How many flights fly from Delhi to Kos on the daily basis?
A: Around 46 flights are flying daily from Delhi to Kos. Out of which 0 are direct and 46 are connecting flights on this route. Some major airlines between this route are Aegean Airlines, Air France, Emirates, KLM Royal Dutch, LOT Polish Airlines, Lufthansa, Qatar Airways, Sky Express, Swiss, Turkish Airlines.
Q: What is today’s cheapest fare from Delhi to Kos?
A: Today lowest airfare on Delhi to Kos flight route is 0.
Q: Which is the last flight on Delhi to Kos route?
A: The last flight from Delhi to Kos route is Emirates, Aegean Airlines at 21:30.
Q: Which is the cheapest flight from Delhi to Kos in next 7 and next 30 days?
A: Cheapest flight in next 7 days on Delhi to Kos route is at . And in next 30 days lowest price on Delhi to Kos route is .
Q: When does the first flight leave from Delhi to Kos?
A: The first flight from Delhi to Kos is Air France, Sky Express at 01:30.
Q: Which airline has maximum number for flights between Delhi to Kos?
A: Out of 46 daily flights between Delhi to Kos Aegean Airlines has maximum 29 flights. After that Qatar Airways has 20, Sky Express has 17, Lufthansa has 9, LOT Polish Airlines has 4, Air France has 3, Emirates has 3, Swiss has 3, KLM Royal Dutch has 2, Turkish Airlines has 2 flights between Delhi to Kos.