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Cheap flights from Illinois to Chennai from ₹ 29,126

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MAA
12 Jan — 19 Jan1
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 13 December 2025.

Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Wed 28/107:35MAA - ORD
1 stop22h 40mBritish Airways
Deal found 12/12₹ 79,237
Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Fri 6/207:35MAA - ORD
1 stop41h 45mBritish Airways
Deal found 12/12₹ 82,403
Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Tue 27/107:35MAA - ORD
2 stops47h 10mBritish Airways
Deal found 12/12₹ 83,217
Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Sat 7/207:35MAA - ORD
1 stop41h 45mBritish Airways
Deal found 12/12₹ 86,021
Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Thu 22/107:35MAA - ORD
1 stop41h 45mBritish Airways
Deal found 12/12₹ 87,378
Wed 31/1217:10ORD - MAA
1 stop24h 55mBritish Airways
Mon 9/207:35MAA - ORD
1 stop22h 40mBritish Airways
Deal found 12/12₹ 90,091
Tue 30/1217:10ORD - MAA
1 stop24h 55mBritish Airways
Tue 27/107:35MAA - ORD
1 stop22h 40mBritish Airways
Deal found 12/12₹ 90,182
Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Fri 23/107:35MAA - ORD
1 stop22h 40mBritish Airways
Deal found 12/12₹ 90,544
Wed 31/1220:40ORD - MAA
2 stops46h 25mBritish Airways
Sun 25/117:00MAA - ORD
2 stops57h 55mBritish Airways
Deal found 12/12₹ 90,996
Fri 26/1213:30ORD - MAA
1 stop21h 40mAir India
Tue 27/121:40MAA - ORD
2 stops25h 20mAir India
Deal found 12/12₹ 92,805
Sat 13/1206:00STL - MAA
2 stops33h 00mQatar Airways
Tue 30/1203:25MAA - STL
2 stops32h 04mQatar Airways
Deal found 11/12₹ 221,972
Mon 29/1213:59STL - MAA
2 stops25h 01mMultiple Airlines
Sat 10/104:05MAA - STL
2 stops28h 40mMultiple Airlines
Deal found 13/12₹ 233,912

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 13 December 2025.

Round-trip from

₹ 68,473

One-way from

₹ 29,126

Popular in

December

Cheapest in

April

Average price

₹ 130,253
Air India
  • Air India
  • 11/2-24/2
  • 3 total stops
  • 61h 45m total
  • Illinois to Chennai
Search Deals
Air India
  • Air India
  • 26/1
  • 1 total stop
  • 33h 20m total
  • Illinois to Chennai
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (₹ 742,422 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 299,147 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 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 13 December 2025.
Use the filters below to find and compare flights from Illinois to Chennai that are best for you.

Fly from

Illinois

Fly to

Chennai

Route

Depart

Return

Price

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 3/3

17:10-05:35

1 stop24h 55m

Chennai

Tue 31/3

05:35-07:15

2 stops36h 10m

₹ 76,162

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 9/2

21:45-05:35

1 stop20h 20m

Chennai

Mon 23/2

07:35-07:23

2 stops35h 18m

₹ 76,162

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 6/2

13:10-02:30

1 stop25h 50m

Chennai

Sat 21/2

16:10-07:35

1 stop26h 55m

₹ 79,508

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Wed 28/1

07:15-02:20

2 stops31h 35m

Chennai

Tue 10/2

04:05-21:15

2 stops28h 40m

₹ 86,383

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Fri 30/1

09:33-02:20

2 stops29h 17m

Chennai

Thu 26/2

03:25-22:05

2 stops30h 10m

₹ 90,634

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Thu 19/2

10:04-02:30

2 stops28h 56m

Chennai

Fri 27/2

03:25-22:05

2 stops30h 10m

₹ 91,358

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Wed 21/1

10:00-02:30

2 stops29h 00m

Chennai

Fri 13/2

03:25-18:04

2 stops26h 09m

₹ 91,629

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sun 25/1

09:25-02:30

2 stops29h 35m

Chennai

Sat 31/1

03:25-22:44

2 stops54h 49m

₹ 92,081

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Thu 29/1

09:33-02:20

2 stops29h 17m

Chennai

Sun 1/2

03:25-22:59

2 stops31h 04m

₹ 94,976

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 5/1

19:45-20:10

1 stop36h 55m

Chennai

Mon 9/2

21:45-14:55

1 stop28h 40m

₹ 95,609

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 46 results
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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, August is the cheapest month in which you can book a flight from Illinois to Chennai (average of ₹ 61,599). Flying from Illinois to Chennai in June is currently the most expensive (average of ₹ 81,770). 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.

What is the cheapest time of day to fly from IL to MAA?

Find hourly flight availability from Illinois to Chennai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 December 2025.

One of the essential ways to save on airfare from Illinois to Chennai is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 35% on airfare.

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 British Airways, Etihad Airways, and Qatar Airways fly from Illinois to Chennai in about 24h 55m. The time it takes to get you to your destination can typically vary by up to 6h 40m. 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, August is the cheapest month in which you can book a flight from Illinois to Chennai (average of ₹ 61,599). Flying from Illinois to Chennai in June is currently the most expensive (average of ₹ 81,770). 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
Mahabalipuram
Vellore

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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 5 airlines flying from Illinois to Chennai

Discover the top 5 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 13 December 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest₹ 40,631Average₹ 112,458FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air IndiaCheapest₹ 67,340Average₹ 104,339FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest₹ 69,445Average₹ 99,703FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
British AirwaysCheapest₹ 77,554Average₹ 138,755FlexibilityNo cancel feeOn-time70%
Search British Airways flights
EmiratesCheapest₹ 88,605Average₹ 136,744FlexibilityNo cancel feeOn-time75%
Search Emirates 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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