How long is the flight from Illinois to Chennai?

Airlines like Etihad Airways and Qatar Airways fly from Illinois to Chennai in about 31h 30m. The time it takes to get you to your destination can typically vary by up to 20m. Illinois and Chennai are separated by a distance of 13773 km. This flight may include one or multiple stops. Find deals

In terms of precipitation, rainfall in Chennai ranges from 10.0 - 330.0 inches per month. November is typically the wettest month, when rainfall can reach 330.0 mm. February is typically the driest time to visit Chennai when rainfall is around 10.0 mm. Find deals

If weather is an important factor for your trip to Chennai, use this chart to help with planning. For those seeking warmer temperatures, May is the ideal time of year to visit, when temperatures reach an average of 33.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C). Find deals

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.

What are the most popular airlines that fly from Illinois to Chennai?

When booking a flight from Illinois to Chennai, you may want to consider flying on Etihad Airways, Air India or British Airways as they are the most popular for this route.

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

When flying from Illinois to Chennai, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

₹ 32,801+ Flights from Illinois to Chennai

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 January 2026.

Wed 31/1214:35ORD - MAA

1 stop22h 30mCathay Pacific

Thu 22/102:00MAA - ORD

1 stop22h 25mCathay Pacific

Deal found 31/12₹ 92,112

Tue 30/1217:20ORD - MAA

2 stops29h 35mAir France

Sat 24/123:15MAA - ORD

2 stops51h 25mAir France

Deal found 30/12₹ 94,718

Wed 31/1216:25ORD - MAA

2 stops27h 55mKLM

Tue 20/119:05MAA - ORD

2 stops30h 45mKLM

Deal found 30/12₹ 98,223

Wed 31/1214:35ORD - MAA

1 stop22h 30mCathay Pacific

Sun 8/202:00MAA - ORD

1 stop22h 25mCathay Pacific

Deal found 31/12₹ 101,818

Wed 31/1218:50ORD - MAA

2 stops50h 25mSWISS

Thu 22/120:00MAA - ORD

2 stops28h 15mSWISS

Deal found 31/12₹ 103,615

Tue 30/1218:50ORD - MAA

2 stops50h 25mSWISS

Tue 20/118:00MAA - ORD

2 stops33h 50mSWISS

Deal found 29/12₹ 104,064

Wed 31/1217:20ORD - MAA

2 stops27h 35mAir France

Tue 10/219:05MAA - ORD

2 stops31h 35mAir France

Deal found 31/12₹ 105,322

Wed 31/1218:50ORD - MAA

2 stops50h 25mSWISS

Sat 17/120:00MAA - ORD

2 stops55h 50mSWISS

Deal found 31/12₹ 106,041

Wed 31/1214:35ORD - MAA

1 stop22h 30mCathay Pacific

Thu 12/202:00MAA - ORD

1 stop22h 25mCathay Pacific

Deal found 31/12₹ 106,311

Wed 31/1218:00ORD - MAA

2 stops41h 20mMultiple Airlines

Mon 19/120:00MAA - ORD

2 stops31h 50mMultiple Airlines

Deal found 31/12₹ 106,670

Wed 31/1216:20ORD - MAA

1 stop20h 15mMultiple Airlines

Tue 10/201:50MAA - ORD

2 stops24h 50mMultiple Airlines

Deal found 31/12₹ 106,940

Best flights from Illinois to Chennai
Discover carefully curated flight deals from Illinois to Chennai that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 January 2026.

Fri 30/113:10ORD - MAA

1 stop31h 30mEtihad Airways

Sun 1/315:45MAA - ORD

1 stop27h 20mEtihad Airways

Deal found 31/12₹ 67,848

Sun 1/307:00ORD - MAA

2 stops31h 50mQatar Airways

Fri 10/404:20MAA - ORD

1 stop21h 00mQatar Airways

Deal found 31/12₹ 78,453

Fri 27/314:10ORD - MAA

2 stops23h 10mMultiple Airlines

Mon 6/416:35MAA - ORD

1 stop26h 40mMultiple Airlines

Deal found 31/12₹ 81,598

Wed 6/520:35ORD - MAA

1 stop37h 25mEmirates

Wed 15/709:50MAA - ORD

1 stop40h 25mEmirates

Deal found 30/12₹ 84,743

Sat 14/216:25ORD - MAA

2 stops27h 55mKLM

Fri 20/219:05MAA - ORD

2 stops30h 45mKLM

Deal found 30/12₹ 94,988

Wed 15/419:05ORD - MAA

2 stops51h 10mSWISS

Tue 28/420:40MAA - ORD

3 stops25h 50mSWISS

Deal found 30/12₹ 97,594

Sat 14/314:10ORD - MAA

1 stop25h 50mEtihad Airways

Fri 20/310:00MAA - ORD

1 stop33h 05mEtihad Airways

Deal found 31/12₹ 69,466

Fri 13/314:10ORD - MAA

1 stop31h 30mEtihad Airways

Fri 20/310:00MAA - ORD

1 stop33h 05mEtihad Airways

Deal found 31/12₹ 69,466

Mon 16/314:10ORD - MAA

1 stop19h 15mMultiple Airlines

Mon 20/414:35MAA - ORD

3 stops34h 55mMultiple Airlines

Deal found 31/12₹ 86,091

Mon 26/114:54STL - MAA

2 stops23h 56mQatar Airways

Mon 2/203:25MAA - STL

2 stops26h 21mQatar Airways

Deal found 31/12₹ 86,720

Sun 25/114:54STL - MAA

2 stops24h 06mQatar Airways

Mon 2/203:25MAA - STL

2 stops27h 34mQatar Airways

Deal found 31/12₹ 86,720

Sun 15/206:00STL - MAA

2 stops38h 40mMultiple Airlines

Sun 22/215:45MAA - STL

2 stops37h 45mMultiple Airlines

Deal found 31/12₹ 87,349

Tue 27/109:25STL - MAA

2 stops29h 25mQatar Airways

Tue 10/303:25MAA - STL

2 stops30h 53mQatar Airways

Deal found 31/12₹ 86,720

Sat 14/208:00STL - MAA

2 stops24h 25mMultiple Airlines

Sat 7/310:00MAA - STL

2 stops42h 30mMultiple Airlines

Deal found 31/12₹ 87,349

Wed 14/113:10ORD - MAA

1 stop25h 50mEtihad Airways

Thu 29/110:00MAA - ORD

1 stop33h 05mEtihad Airways

Deal found 30/12₹ 87,888

Tue 27/114:54STL - MAA

2 stops24h 06mQatar Airways

Wed 4/203:25MAA - STL

2 stops32h 04mQatar Airways

Deal found 31/12₹ 86,720

Sat 17/113:10ORD - MAA

1 stop31h 30mEtihad Airways

Sun 1/221:40MAA - ORD

1 stop21h 25mEtihad Airways

Deal found 31/12₹ 91,483

Thu 22/114:54STL - MAA

2 stops23h 56mQatar Airways

Mon 2/203:25MAA - STL

2 stops26h 21mQatar Airways

Deal found 31/12₹ 86,720

Sun 24/516:20ORD - MAA

2 stops31h 15mMultiple Airlines

Wed 3/615:45MAA - ORD

2 stops33h 45mMultiple Airlines

Deal found 31/12₹ 97,055

Tue 27/112:11STL - MAA

2 stops26h 49mQatar Airways

Sun 15/203:25MAA - STL

2 stops29h 17mQatar Airways

Deal found 31/12₹ 86,720

Wed 21/114:54STL - MAA

2 stops23h 56mQatar Airways

Wed 4/203:25MAA - STL

2 stops32h 04mQatar Airways

Deal found 31/12₹ 86,720

Wed 21/109:33STL - MAA

2 stops29h 17mQatar Airways

Tue 10/203:25MAA - STL

2 stops28h 18mQatar Airways

Deal found 31/12₹ 86,720

Thu 22/114:54STL - MAA

2 stops23h 56mQatar Airways

Wed 4/203:25MAA - STL

2 stops32h 04mQatar Airways

Deal found 31/12₹ 86,720

Thu 22/114:54STL - MAA

2 stops23h 56mQatar Airways

Thu 5/203:25MAA - STL

2 stops26h 19mQatar Airways

Deal found 31/12₹ 88,158

Thu 29/115:55PIA - MAA

2 stops47h 05mQatar Airways

Wed 4/204:05MAA - PIA

2 stops29h 46mQatar Airways

Deal found 1/1₹ 117,185

Last-minute flights from Illinois to Chennai
Discover last-minute flight deals from Illinois to Chennai. Data last updated 1 January 2026 and is based on user searches.

Sun 18/113:10ORD - MAA

1 stop38h 30mEtihad Airways

Sat 24/110:00MAA - ORD

1 stop33h 05mEtihad Airways

Deal found 30/12₹ 66,950

Mon 19/113:10ORD - MAA

1 stop31h 30mEtihad Airways

Mon 2/216:10MAA - ORD

1 stop26h 55mEtihad Airways

Deal found 30/12₹ 68,747

Wed 21/113:10ORD - MAA

1 stop19h 15mEtihad Airways

Sun 1/203:55MAA - ORD

1 stop39h 10mEtihad Airways

Deal found 31/12₹ 67,579

Wed 21/113:30ORD - MAA

1 stop23h 30mAir India

Tue 3/208:05MAA - ORD

2 stops38h 55mAir India

Deal found 30/12₹ 69,107

Fri 23/113:10ORD - MAA

1 stop25h 50mEtihad Airways

Wed 4/221:40MAA - ORD

1 stop21h 25mEtihad Airways

Deal found 30/12₹ 67,759

Fri 23/113:10ORD - MAA

1 stop25h 50mEtihad Airways

Tue 3/221:40MAA - ORD

1 stop21h 25mEtihad Airways

Deal found 31/12₹ 68,028

Sat 24/114:35ORD - MAA

1 stop22h 30mCathay Pacific

Tue 3/202:00MAA - ORD

1 stop22h 25mCathay Pacific

Deal found 30/12₹ 67,848

Sat 24/114:35ORD - MAA

1 stop22h 30mCathay Pacific

Wed 4/202:00MAA - ORD

1 stop22h 25mCathay Pacific

Deal found 31/12₹ 68,208

Sat 24/113:10ORD - MAA

1 stop25h 50mEtihad Airways

Sun 1/215:45MAA - ORD

1 stop27h 20mEtihad Airways

Deal found 31/12₹ 69,556

Sun 25/113:10ORD - MAA

1 stop19h 15mEtihad Airways

Sun 1/215:45MAA - ORD

1 stop27h 20mEtihad Airways

Deal found 31/12₹ 68,118

Tue 27/114:35ORD - MAA

1 stop22h 30mMultiple Airlines

Mon 16/202:00MAA - ORD

2 stops32h 51mMultiple Airlines

Deal found 30/12₹ 69,017

Fri 30/113:10ORD - MAA

1 stop19h 15mEtihad Airways

Sat 28/216:10MAA - ORD

1 stop26h 55mEtihad Airways

Deal found 30/12₹ 69,376

One-way flights from Illinois to Chennai
Search for one-way flight options from Illinois to Chennai. Find affordable one-way fares based on user searches. Data last updated 1 January 2026.

Sat 25/414:00ORD - MAA

1 stop38h 05mEtihad Airways

Deal found 31/12₹ 32,801

Sat 31/120:20ORD - MAA

2 stops34h 15mIndiGo

Deal found 30/12₹ 34,508

Sun 1/220:20ORD - MAA

2 stops32h 30mIndiGo

Deal found 31/12₹ 35,137

Mon 16/314:30ORD - MAA

2 stops29h 35mMultiple Airlines

Deal found 31/12₹ 35,407

Wed 18/213:30ORD - MAA

2 stops29h 35mMultiple Airlines

Deal found 30/12₹ 35,497

Sat 14/220:20ORD - MAA

2 stops32h 30mIndiGo

Deal found 29/12₹ 35,766

Wed 25/314:10ORD - MAA

2 stops29h 55mMultiple Airlines

Deal found 31/12₹ 36,036

Thu 22/113:10ORD - MAA

2 stops26h 45mMultiple Airlines

Deal found 30/12₹ 36,485

Mon 16/213:10ORD - MAA

2 stops26h 45mMultiple Airlines

Deal found 31/12₹ 36,575

Fri 30/120:20ORD - MAA

2 stops34h 15mIndiGo

Deal found 29/12₹ 36,665

Fri 13/314:30ORD - MAA

2 stops30h 10mMultiple Airlines

Deal found 31/12₹ 36,845

Tue 31/314:00ORD - MAA

2 stops22h 45mMultiple Airlines

Deal found 31/12₹ 37,114

Find flight deals from Illinois to Chennai

Round-trip from	₹ 66,770
One-way from	₹ 32,801
Popular in	December
Cheapest in	April
Average price	₹ 89,865

Air India
2/3-26/3
3 total stops
58h 10m total
Illinois to Chennai

Search Deals

Air India
28/1
1 total stop
41h 30m total
Illinois to Chennai

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (₹ 658,123 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (₹ 298,225 potential savings vs. average return price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 30/1

13:10-08:10

1 stop31h 30m

Chennai

Sun 1/3

15:45-07:35

1 stop27h 20m

₹ 67,848

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Sat 14/3

14:10-02:30

1 stop25h 50m

Chennai

Fri 20/3

10:00-08:35

1 stop33h 05m

₹ 69,466

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 13/3

14:10-08:10

1 stop31h 30m

Chennai

Fri 20/3

10:00-08:35

1 stop33h 05m

₹ 69,466

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Sun 1/3

07:00-02:20

2 stops31h 50m

Chennai

Fri 10/4

04:20-14:50

1 stop21h 00m

₹ 78,453

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 27/3

14:10-23:50

2 stops23h 10m

Chennai

Mon 6/4

16:35-08:45

1 stop26h 40m

₹ 81,598

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Wed 6/5

20:35-20:30

1 stop37h 25m

Chennai

Wed 15/7

09:50-15:45

1 stop40h 25m

₹ 84,743

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 16/3

14:10-19:55

1 stop19h 15m

Chennai

Mon 20/4

14:35-15:00

3 stops34h 55m

₹ 86,091

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Mon 26/1

14:54-02:20

2 stops23h 56m

Chennai

Mon 2/2

03:25-18:16

2 stops26h 21m

₹ 86,720

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sun 25/1

14:54-02:30

2 stops24h 06m

Chennai

Mon 2/2

03:25-19:29

2 stops27h 34m

₹ 86,720

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Tue 27/1

09:25-02:20

2 stops29h 25m

Chennai

Tue 10/3

03:25-23:48

2 stops30h 53m

₹ 86,720

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 40 results

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 ₹ 60,300). Flying from Illinois to Chennai in June is currently the most expensive (average of ₹ 81,418). 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.

Related info for your journey

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 Etihad Airways and Qatar Airways fly from Illinois to Chennai in about 31h 30m. The time it takes to get you to your destination can typically vary by up to 20m. 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 ₹ 60,300). Flying from Illinois to Chennai in June is currently the most expensive (average of ₹ 81,418). 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

Mahabalipuram

Vellore

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Illinois to Chennai

John F Kennedy Intl to Chennai flights

Newark to Chennai flights

San Francisco to Chennai flights

Dallas/Fort Worth to Chennai flights

Dulles Intl to Chennai flights

O'Hare Intl to Chennai flights

Baltimore to Chennai flights

Reagan-National to Chennai flights

Boston to Chennai flights

LaGuardia to Chennai flights

Atlanta to Chennai flights

Hobby to Chennai flights

Seattle to Chennai flights

George Bush Intcntl to Chennai flights

Los Angeles to Chennai flights

Austin to Chennai flights

Santa Ana to Chennai flights

Philadelphia to Chennai flights

Detroit to Chennai flights

Burbank to Chennai flights

Raleigh to Chennai flights

San Francisco to Coimbatore flights

Charlotte to Chennai flights

Ontario to Chennai flights

San Jose to Chennai flights

Newark to Coimbatore flights

John F Kennedy Intl to Coimbatore flights

Cincinnati to Chennai flights

Portland to Chennai flights

Columbus to Chennai flights

Oakland to Chennai flights

Tampa to Chennai flights

Sky Harbor Intl to Chennai flights

Las Vegas to Chennai flights

Minneapolis to Chennai flights

San Francisco to Tiruchirappalli flights

Seattle to Coimbatore flights

Orlando to Chennai flights

Miami to Chennai flights

Nashville to Chennai flights

St. Louis to Chennai flights

Los Angeles to Coimbatore flights

Cleveland to Chennai flights

Denver to Chennai flights

Pittsburgh to Chennai flights

San Diego to Chennai flights

Tucson to Chennai flights

Des Moines to Chennai flights

Jacksonville to Chennai flights

Indianapolis to Chennai flights

Other flights to Chennai

Chennai to Bengaluru flights

Chennai to Hyderabad flights

Chennai to Visakhapatnam flights

Chennai to Rājahmundry flights

Chennai to Tiruchirappalli flights

Chennai to Pune flights

Chennai to Mumbai flights

Chennai to Coimbatore flights

Chennai to Kannur flights

Chennai to Kochi flights

Chennai to Madurai flights

Chennai to Indore flights

Chennai to Vasco da Gama flights

Chennai to Bhubaneswar flights

Chennai to Raipur flights

Chennai to Vijayawada flights

Chennai to Bengaluru flights

Chennai to Thiruvananthapuram flights

Top 5 airlines flying from Illinois to Chennai

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest₹ 68,994	Average₹ 105,324	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Air India	Cheapest₹ 76,293	Average₹ 123,037	FlexibilityNo cancel fee	On-timeN/A	Search Air India flights
Lufthansa	Cheapest₹ 76,383	Average₹ 111,727	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest₹ 77,050	Average₹ 130,960	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Emirates	Cheapest₹ 88,677	Average₹ 135,856	FlexibilityNo cancel fee	On-time75%	Search Emirates flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Illinois to Chennai from ₹ 32,801

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Chennai

Cheapest flights from Illinois to ChennaiExplore 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 January 2026.

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 January 2026.

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 January 2026.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Chennai that are best for you.

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.

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?

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?

How long is the flight from Illinois to Chennai?

What are the most popular routes from Illinois to Chennai?

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

How can I find direct flights from Illinois to Chennai?

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

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

Travelling to a place near Chennai?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Chennai

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

Top 5 airlines flying from Illinois to Chennai

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?

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

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

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

100% Free

Book With Flexibility

Travel Smart

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 January 2026.