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Cheap flights from Kolkata to Illinois from ₹ 45,937

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
CCU — ORD
7 Jan — 14 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Kolkata to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Kolkata to Illinois
Explore the most affordable flight options available from Kolkata to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 December 2025.

Sun 21/1221:00CCU - ORD
2 stops26h 00mAir India
Fri 1/513:10ORD - CCU
1 stop23h 35mAir India
Deal found 6/12₹ 83,424
Tue 23/1215:55CCU - ORD
2 stops31h 05mAir India
Wed 29/413:10ORD - CCU
1 stop24h 35mAir India
Deal found 7/12₹ 85,132
Sun 21/1221:00CCU - ORD
2 stops26h 00mAir India
Wed 29/413:10ORD - CCU
1 stop20h 35mAir India
Deal found 6/12₹ 85,222
Sat 20/1201:40CCU - ORD
2 stops45h 20mMultiple Airlines
Sun 26/414:00ORD - CCU
2 stops28h 15mMultiple Airlines
Deal found 7/12₹ 85,312
Sun 21/1207:00CCU - ORD
2 stops40h 00mMultiple Airlines
Tue 28/414:00ORD - CCU
2 stops28h 15mMultiple Airlines
Deal found 7/12₹ 86,121
Sun 21/1207:00CCU - ORD
2 stops40h 00mMultiple Airlines
Thu 30/414:00ORD - CCU
2 stops28h 15mMultiple Airlines
Deal found 7/12₹ 86,211
Sun 21/1210:45CCU - ORD
3 stops36h 15mMultiple Airlines
Mon 27/413:10ORD - CCU
1 stop20h 35mMultiple Airlines
Deal found 7/12₹ 86,930
Sun 21/1210:45CCU - ORD
3 stops36h 15mMultiple Airlines
Fri 1/513:10ORD - CCU
1 stop20h 35mMultiple Airlines
Deal found 7/12₹ 88,278
Sun 21/1201:40CCU - ORD
2 stops28h 15mMultiple Airlines
Mon 27/413:10ORD - CCU
1 stop20h 35mMultiple Airlines
Deal found 7/12₹ 89,267

Find flight deals from Kolkata to Illinois

Keep the following information in mind while searching for Kolkata to Illinois flight deals. Data was last updated 8 December 2025.

Round-trip from

₹ 71,647

One-way from

₹ 45,937

Popular in

February

Cheapest in

December

Average price

₹ 89,986
KLM
  • KLM
  • 30/3-29/4
  • 4 total stops
  • 62h 20m total
  • Kolkata to Illinois
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 48h 55m total
  • Kolkata to Illinois
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (₹ 3,198,549 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (₹ 790,966 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Kolkata to Illinois 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, Cheapflights users made 454,620 searches. Data last updated 8 December 2025.
Use the filters below to find and compare flights from Kolkata to Illinois that are best for you.

Fly from

Kolkata

Fly to

Illinois

Route

Depart

Return

Price

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Thu 22/1

20:15-15:10

2 stops30h 25m

Chicago O'Hare Intl

Thu 29/1

17:20-10:05

2 stops29h 15m

₹ 71,558

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Tue 24/3

20:15-16:10

2 stops30h 25m

Chicago O'Hare Intl

Tue 26/5

17:10-04:45

2 stops25h 05m

₹ 81,896

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Sun 21/12

10:45-11:30

3 stops36h 15m

Chicago O'Hare Intl

Mon 27/4

13:10-20:15

1 stop20h 35m

₹ 86,930

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Tue 23/12

03:25-14:30

1 stop22h 35m

Chicago O'Hare Intl

Mon 27/4

19:20-02:20

1 stop20h 30m

₹ 100,145

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Tue 23/12

03:25-14:30

1 stop22h 35m

Chicago O'Hare Intl

Sat 2/5

19:20-02:20

1 stop20h 30m

₹ 102,842

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Wed 24/12

03:25-14:30

1 stop22h 35m

Chicago O'Hare Intl

Sat 2/5

19:20-02:20

1 stop20h 30m

₹ 102,842

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Sun 17/5

09:45-15:45

1 stop40h 30m

Chicago O'Hare Intl

Tue 2/6

20:35-08:10

1 stop25h 05m

₹ 104,100

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Thu 21/5

09:45-15:45

1 stop40h 30m

Chicago O'Hare Intl

Mon 1/6

20:35-19:15

1 stop36h 10m

₹ 104,100

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Tue 19/5

09:45-15:45

1 stop40h 30m

Chicago O'Hare Intl

Thu 4/6

20:35-19:15

1 stop36h 10m

₹ 104,100

KolkataChicago

CCU - ORD

CCUORD

Kolkata Netaji S. Chandra

Sun 17/5

20:45-15:45

1 stop29h 30m

Chicago O'Hare Intl

Wed 10/6

20:35-19:15

1 stop36h 10m

₹ 104,100

Flights are sorted by cheapest return flights first.

Deals found on 6/12

Showing 1-10 of 18 results
1
2

Best time to book a flight from Kolkata to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Kolkata with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Kolkata to Illinois

What is the cheapest month to book a flight from Kolkata to Illinois?

Currently, December is the cheapest month in which you can book a flight from Kolkata to Illinois (average of ₹ 71,917). Flying from Kolkata to Illinois in March is currently the most expensive (average of ₹ 105,628). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Kolkata to Illinois?

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 8 December 2025.
Get a feel of what it's like to fly with Qatar Airways, Etihad Airways, andAir India from Kolkata to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,676 reviews
Check prices

Crew

7.9

Comfort

7.4

Boarding

7.5

Overall

7.4

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
Qatar Airways
7.4
Good
3,676 reviews
Qatar Airways
7.4
Good
3,676 reviews
Check prices

Crew

7.9

Comfort

7.4

Boarding

7.5

Overall

7.4

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
Etihad Airways
7.4
Good
1,330 reviews
Qatar Airways
7.4
Good
3,676 reviews
Check prices

Crew

7.9

Comfort

7.4

Boarding

7.5

Overall

7.4

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.
Air India
5.5
Fair
2,948 reviews
Qatar Airways
7.4
Good
3,676 reviews
Check prices

Crew

7.9

Comfort

7.4

Boarding

7.5

Overall

7.4

Entertainment

7.4

Food

7.3

Reviews

1 / 20
6.0
Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.

Related info for your journey

Find useful and relevant information for your journey from Kolkata to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Kolkata to Illinois?

    Located just 13.4 km from the city centre, Kolkata Netaji S. Chandra (CCU) is the airport most travellers will use when flying to Illinois from Kolkata.

  • Can I find deals for flights from Kolkata to Illinois that include hotel bookings?

    Yes. In addition to deals on Kolkata to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Kolkata to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kolkata to Illinois.

  • Can I find deals for business class flights from Kolkata to Illinois?

    Yes. Cheapflights offers flight deals from Kolkata to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Kolkata to Illinois?

    Currently, December is the cheapest month in which you can book a flight from Kolkata to Illinois (average of ₹ 71,917). Flying from Kolkata to Illinois in March is currently the most expensive (average of ₹ 105,628). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Kolkata to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Kolkata to Illinois

Discover the top 3 airlines that operate flights from Kolkata to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 454,620 searches. Data last updated 8 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest₹ 84,249Average₹ 121,081FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Air IndiaCheapest₹ 84,636Average₹ 109,485FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest₹ 88,736Average₹ 110,396FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Kolkata to Illinois?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Kolkata to Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Kolkata to Illinois?

Cheapflights helps you find that perfect flight to Illinois from Kolkata by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Kolkata to Illinois with no change fees?

Need flexible booking options for your flight to Illinois from Kolkata? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Kolkata to Illinois become cheaper?

Yes, Cheapflights offers price alerts on Kolkata to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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