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Cheap flights from Illinois to Kolkata from ₹ 43,854

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CCU
11 Jul — 18 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Kolkata

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Kolkata
Explore the most affordable flight options available from Illinois to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 June 2026.

Tue 1/908:34
STL
-
CCU
2 stops25h 26m
Multiple Airlines
Wed 30/921:30
CCU
-
STL
2 stops33h 44m
Multiple Airlines
Deal found 7/6₹ 98,291
Sat 11/718:12
STL
-
CCU
2 stops46h 13m
Etihad Airways
Fri 17/703:50
CCU
-
STL
2 stops39h 50m
Etihad Airways
Deal found 9/6₹ 105,251
Thu 8/1005:33
STL
-
CCU
2 stops34h 27m
Qatar Airways
Wed 9/1203:25
CCU
-
STL
2 stops32h 04m
Qatar Airways
Deal found 8/6₹ 108,683
Wed 2/911:35
STL
-
CCU
2 stops28h 25m
Qatar Airways
Wed 30/904:00
CCU
-
STL
2 stops25h 37m
Qatar Airways
Deal found 7/6₹ 108,873
Mon 31/809:44
STL
-
CCU
2 stops30h 16m
Qatar Airways
Thu 1/1004:00
CCU
-
STL
2 stops27h 14m
Qatar Airways
Deal found 7/6₹ 110,113
Tue 1/911:35
STL
-
CCU
2 stops28h 25m
Qatar Airways
Sat 3/1004:00
CCU
-
STL
2 stops30h 13m
Qatar Airways
Deal found 7/6₹ 112,592
Sun 1/1107:00
ORD
-
CCU
2 stops31h 25m
Multiple Airlines
Wed 3/303:25
CCU
-
ORD
2 stops32h 04m
Multiple Airlines
Deal found 8/6₹ 113,640
Fri 23/1017:10
ORD
-
CCU
2 stops28h 05m
KLM
Fri 13/1122:30
CCU
-
ORD
2 stops27h 25m
KLM
Deal found 9/6₹ 113,926
Fri 23/1017:10
ORD
-
CCU
2 stops28h 05m
Multiple Airlines
Fri 13/1119:30
CCU
-
ORD
2 stops31h 10m
Multiple Airlines
Deal found 8/6₹ 114,022
Sun 11/1006:00
ORD
-
CCU
2 stops34h 00m
Qatar Airways
Thu 22/1004:00
CCU
-
ORD
1 stop21h 35m
Qatar Airways
Deal found 8/6₹ 114,117
Sat 17/1009:00
ORD
-
CCU
2 stops31h 00m
Multiple Airlines
Wed 11/1103:25
CCU
-
ORD
2 stops37h 45m
Multiple Airlines
Deal found 6/6₹ 114,308
Sun 30/809:46
STL
-
CCU
2 stops30h 14m
Qatar Airways
Mon 28/904:00
CCU
-
STL
2 stops30h 57m
Qatar Airways
Deal found 7/6₹ 114,403

Find flight deals from Illinois to Kolkata

Keep the following information in mind while searching for Illinois to Kolkata flight deals. Data was last updated 11 June 2026.

Round-trip from

₹ 98,291

One-way from

₹ 43,854

Popular in

May

Cheapest in

February

Average price

₹ 163,882
1/9-30/9
  • 1/9-30/9
  • 4 total stops
  • 59h 10m total
  • Illinois to Kolkata
Search Deals
15/9
  • 15/9
  • 2 total stops
  • 25h 15m total
  • Illinois to Kolkata
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (₹ 3,952,078 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (₹ 765,614 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Illinois to Kolkata 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 11 June 2026.
Use the filters below to find and compare flights from Illinois to Kolkata that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Thu 8/10

05:33-02:30

2 stops34h 27m

Kolkata Netaji S. Chandra

Wed 9/12

03:25-23:59

2 stops32h 04m

₹ 108,683

ChicagoKolkata

ORD - CCU

ORDCCU

Chicago O'Hare Intl

Fri 23/10

17:10-07:45

2 stops28h 05m

Kolkata Netaji S. Chandra

Fri 13/11

22:30-14:25

2 stops27h 25m

₹ 113,926

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Sun 30/8

09:46-02:30

2 stops30h 14m

Kolkata Netaji S. Chandra

Tue 29/9

04:00-19:07

2 stops25h 37m

₹ 114,403

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Thu 17/9

08:54-02:30

2 stops31h 06m

Kolkata Netaji S. Chandra

Mon 21/9

04:00-23:46

2 stops30h 16m

₹ 114,403

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Wed 16/9

08:30-02:30

2 stops31h 30m

Kolkata Netaji S. Chandra

Sun 20/9

04:00-21:57

2 stops28h 27m

₹ 118,216

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Sun 21/6

08:59-02:30

2 stops31h 01m

Kolkata Netaji S. Chandra

Fri 26/6

04:00-00:16

2 stops30h 46m

₹ 140,239

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Sun 5/7

19:22-02:30

2 stops44h 38m

Kolkata Netaji S. Chandra

Wed 22/7

04:00-00:16

2 stops30h 46m

₹ 156,351

St. LouisKolkata

STL - CCU

STLCCU

Lambert-St Louis

Wed 30/9

13:29-04:50

3 stops28h 51m

Kolkata Netaji S. Chandra

Thu 8/10

09:50-14:00

2 stops38h 40m

₹ 162,452
Fastest return journey

ChicagoKolkata

ORD - CCU

ORDCCU

Chicago O'Hare Intl

Sun 26/7

16:30-04:50

3 stops25h 50m

Kolkata Netaji S. Chandra

Wed 9/9

21:00-12:00

3 stops25h 30m

₹ 179,136

ChicagoKolkata

ORD - CCU

ORDCCU

Chicago O'Hare Intl

Wed 18/11

21:50-09:50

3 stops48h 30m

Kolkata Netaji S. Chandra

Wed 9/12

21:00-12:40

2 stops27h 10m

₹ 188,574

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 34 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Illinois 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 Illinois to Kolkata

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Kolkata (average of ₹ 49,193). Flying from Illinois to Kolkata in December is currently the most expensive (average of ₹ 91,904). 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 Illinois to Kolkata?

How far ahead should I book a flight from Illinois to Kolkata?

The best time to book flights from Illinois to Kolkata is 88 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Kolkata. 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 into for flights to Kolkata from Illinois?

    For a flight from Illinois to Kolkata, you will be flying into Netaji S. Chandra. Kolkata Netaji S. Chandra (CCU) is just 13.4 km from the centre of the city.

  • How long is the flight from Illinois to Kolkata?

    For as low as ₹ 113,926, Qatar Airways can have you in Kolkata from Illinois in 28h 05m. The distance from Illinois to Kolkata is about 12809 km. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Kolkata 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 Illinois to Kolkata?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Kolkata (average of ₹ 49,193). Flying from Illinois to Kolkata in December is currently the most expensive (average of ₹ 91,904). 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 Illinois to Kolkata

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Illinois to Kolkata. 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 Illinois to Kolkata?

Millions of users choose and trust Cheapflights to book the best flight deals from Illinois to Kolkata for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Illinois to Kolkata with no change fees.

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

Yes, Cheapflights offers price alerts on Illinois to Kolkata 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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