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Cheap flights from Illinois to Chennai from ₹ 33,694

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MAA
1 May — 8 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Chennai

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Chennai
Explore the most affordable flight options available from Illinois to Chennai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 April 2026.

Sat 25/413:00
ORD
-
MAA
1 stop20h 45m
Etihad Airways
Fri 8/504:05
MAA
-
ORD
1 stop39h 00m
Etihad Airways
Deal found 27/3₹ 74,708
Fri 8/514:00
ORD
-
MAA
1 stop38h 35m
Etihad Airways
Sat 23/510:15
MAA
-
ORD
1 stop32h 50m
Etihad Airways
Deal found 27/3₹ 74,802
Sat 2/514:00
ORD
-
MAA
1 stop19h 40m
Etihad Airways
Mon 18/510:15
MAA
-
ORD
1 stop32h 50m
Etihad Airways
Deal found 27/3₹ 74,895
Wed 29/721:10
ORD
-
MAA
1 stop36h 30m
Etihad Airways
Mon 31/810:15
MAA
-
ORD
1 stop39h 55m
Etihad Airways
Deal found 27/3₹ 74,989
Sun 19/413:00
ORD
-
MAA
1 stop20h 45m
Etihad Airways
Tue 5/510:15
MAA
-
ORD
1 stop32h 50m
Etihad Airways
Deal found 29/3₹ 75,083
Sat 4/413:00
ORD
-
MAA
1 stop20h 45m
Etihad Airways
Wed 22/421:55
MAA
-
ORD
1 stop21h 50m
Etihad Airways
Deal found 29/3₹ 75,459
Sat 25/413:00
ORD
-
MAA
1 stop20h 45m
Etihad Airways
Mon 11/510:15
MAA
-
ORD
1 stop32h 50m
Etihad Airways
Deal found 27/3₹ 75,552
Sat 2/514:00
ORD
-
MAA
1 stop19h 40m
Multiple Airlines
Sat 16/507:05
MAA
-
ORD
2 stops36h 00m
Multiple Airlines
Deal found 31/3₹ 75,740
Sat 25/413:00
ORD
-
MAA
1 stop20h 45m
Etihad Airways
Sun 10/510:15
MAA
-
ORD
1 stop32h 50m
Etihad Airways
Deal found 27/3₹ 75,834
Thu 2/413:00
ORD
-
MAA
1 stop27h 15m
Etihad Airways
Tue 14/421:55
MAA
-
ORD
1 stop21h 50m
Etihad Airways
Deal found 31/3₹ 75,928
Thu 24/921:10
ORD
-
MAA
1 stop31h 25m
Etihad Airways
Thu 8/1016:05
MAA
-
ORD
1 stop34h 05m
Etihad Airways
Deal found 30/3₹ 76,022
Fri 17/407:00
STL
-
MAA
2 stops26h 45m
Multiple Airlines
Sat 27/621:55
MAA
-
STL
2 stops32h 33m
Multiple Airlines
Deal found 30/3₹ 87,096

Find flight deals from Illinois to Chennai

Keep the following information in mind while searching for Illinois to Chennai flight deals. Data was last updated 1 April 2026.

Round-trip from

₹ 74,708

One-way from

₹ 33,694

Popular in

December

Cheapest in

February

Average price

₹ 78,931
Etihad Airways
  • Etihad Airways
  • 4/8-31/8
  • 2 total stops
  • 40h 50m total
  • Illinois to Chennai
Search Deals
Etihad Airways
  • Etihad Airways
  • 11/5
  • 1 total stop
  • 26h 20m total
  • Illinois to Chennai
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (₹ 517,429 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (₹ 345,558 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Illinois to Chennai 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 1 April 2026.
Use the filters below to find and compare flights from Illinois to Chennai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Fri 17/4

07:00-20:15

2 stops26h 45m

Chennai

Sat 27/6

21:55-19:58

2 stops32h 33m

₹ 87,096

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sun 26/4

07:00-20:15

2 stops26h 45m

Chennai

Sun 3/5

16:05-18:04

2 stops36h 29m

₹ 87,472

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Fri 1/5

07:00-02:50

2 stops33h 20m

Chennai

Sun 31/5

16:05-19:00

2 stops37h 25m

₹ 87,472

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sun 19/4

07:00-02:45

2 stops33h 15m

Chennai

Fri 15/5

16:05-16:41

2 stops35h 06m

₹ 89,349

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sun 19/4

07:00-02:45

2 stops33h 15m

Chennai

Mon 15/6

21:55-20:30

2 stops33h 05m

₹ 89,349

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sun 10/5

07:00-02:50

2 stops33h 20m

Chennai

Tue 30/6

04:05-20:30

2 stops26h 55m

₹ 89,349

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Mon 27/4

09:10-04:25

2 stops32h 45m

Chennai

Mon 4/5

16:05-14:03

2 stops32h 28m

₹ 89,349

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Wed 13/5

07:00-02:50

2 stops33h 20m

Chennai

Wed 10/6

21:55-20:52

2 stops33h 27m

₹ 89,349

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sat 8/8

08:35-02:25

2 stops31h 20m

Chennai

Sat 22/8

04:05-20:19

2 stops26h 44m

₹ 91,226

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Sun 19/4

19:20-02:40

1 stop20h 50m

Chennai

Tue 5/5

04:20-06:40

2 stops36h 50m

₹ 91,414

Flights are sorted by cheapest return flights first.

Deals found on 31/3

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Chennai

Have a flexible travel schedule? Discover the best time to fly to Chennai 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 Chennai

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Chennai (average of ₹ 58,471). Flying from Illinois to Chennai in June is currently the most expensive (average of ₹ 83,905). 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 Chennai?

Related info for your journey

Find useful and relevant information for your journey from Illinois to Chennai. 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 Chennai from Illinois?

    Located just 16.5 km from the city centre, Chennai (MAA) is the airport most travelers will use when flying to Chennai from Illinois.

  • How long is the flight from Illinois to Chennai?

    Airlines like Qatar Airways, KLM, and Lufthansa fly from Illinois to Chennai in about 20h 50m. The time it takes to get you to your destination can typically vary by up to 12h. Illinois and Chennai are separated by a distance of 13773 km. This flight may include one or multiple stops.

  • What are the most popular routes from Illinois to Chennai?

    The most popular flight routes from Illinois to Chennai are Chicago O'Hare Intl - Chennai, Lambert-St Louis - Chennai and Chicago Midway - Chennai.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Chennai (average of ₹ 58,471). Flying from Illinois to Chennai in June is currently the most expensive (average of ₹ 83,905). 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

Travelling to a place near Chennai?

Book flights to Chennai if you plan to visit one of these locations
Vellore
Mahabalipuram

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Alternative routes for Illinois to Chennai

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

Discover the top 3 airlines that operate flights from Illinois to Chennai. 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 1 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest₹ 69,871Average₹ 136,956FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest₹ 77,281Average₹ 116,924FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
British AirwaysCheapest₹ 80,469Average₹ 136,772FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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 Chennai?

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

Cheapflights helps you find that perfect flight to Chennai from Illinois 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 Illinois to Chennai with no change fees?

Need flexible booking options for your flight to Chennai from Illinois? 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 Illinois to Chennai become cheaper?

Of course! You can now track prices for flights from Illinois to Chennai and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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