How long is the flight from Illinois to Chennai?

Airlines like Qatar Airways, Etihad Airways, and SWISS fly from Illinois to Chennai in about 21h 20m. The time it takes to get you to your destination can typically vary by up to 10h 45m. Illinois and Chennai are separated by a distance of 13773 km. This flight may include one or multiple stops.

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.

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).

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, Qatar Airways or Cathay Pacific 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.

₹ 34,327+ Cheap Flights from Illinois to Chennai

Cheap flight deals from Illinois to Chennai

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 25 September 2026.

Tue 13/1020:25 -

1 stop19h 55m

Wed 4/1116:10 -

2 stops38h 49m

Deal found 20/9₹ 85,530

Fri 25/920:05 -

1 stop25h 50m

Mon 5/1021:25 -

2 stops28h 45m

Deal found 21/9₹ 85,626

Mon 28/914:00 -

2 stops22h 50m

Thu 15/1012:25 -

3 stops30h 40m

Deal found 20/9₹ 85,722

Tue 22/920:35 -

1 stop19h 25m

Fri 9/1009:50 -

1 stop40h 40m

Deal found 22/9₹ 86,009

Tue 24/1111:00 -

2 stops21h 20m

Wed 2/1216:10 -

1 stop27h 15m

Deal found 22/9₹ 86,201

Sat 3/1014:00 -

2 stops23h 20m

Sun 25/1009:55 -

1 stop33h 30m

Deal found 22/9₹ 86,297

Sun 25/1019:50 -

1 stop19h 55m

Wed 9/1204:05 -

1 stop21h 55m

Deal found 25/9₹ 86,393

Tue 3/1119:45 -

1 stop25h 00m

Tue 1/1209:50 -

1 stop40h 35m

Deal found 24/9₹ 86,489

Fri 25/920:05 -

1 stop25h 50m

Sun 4/1010:15 -

2 stops43h 18m

Deal found 22/9₹ 86,680

Mon 19/1016:50 -

2 stops23h 30m

Tue 10/1104:05 -

1 stop21h 55m

Deal found 24/9₹ 86,776

Thu 5/1109:45 -

1 stop27h 55m

Tue 17/1110:10 -

2 stops33h 00m

Deal found 24/9₹ 86,872

Sat 10/1006:10 -

2 stops27h 30m

Sun 25/1009:55 -

1 stop33h 30m

Deal found 23/9₹ 87,064

Find flight deals from Illinois to Chennai

Round-trip from	₹ 85,530
One-way from	₹ 34,327
Popular in	December
Cheapest in	April
Average price	₹ 95,310

Etihad Airways
13/10-4/11
3 total stops
58h 44m total
Illinois to Chennai

Search Deals

Etihad Airways
10/10-31/12
1 total stop
38h 10m total
Illinois to Chennai

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (₹ 435,010 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (₹ 308,006 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Sat 24/10

14:00-19:50

1 stop19h 20m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 37,299

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Tue 13/10

20:25-02:50

1 stop19h 55m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 37,299

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Fri 2/10

20:05-20:10

1 stop37h 35m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 45,737

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Wed 20/1

18:30-08:40

3 stops50h 40m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 49,956

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Sun 7/2

21:50-08:40

3 stops47h 20m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 51,586

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Fri 6/11

22:35-00:05

1 stop38h 00m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 53,696

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Mon 30/11

16:20-00:05

1 stop20h 15m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 55,614

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Tue 1/12

13:10-08:05

1 stop31h 25m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 57,723

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Wed 30/9

16:50-08:15

2 stops28h 55m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 59,161

ChicagoChennai

ORD Chicago O'Hare Intl - MAA Chennai

ORDMAA

Chicago O'Hare Intl

Wed 30/9

17:10-11:45

2 stops32h 05m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 59,161

Flights are sorted by cheapest return flights first.

Deals found on 20/9

Showing 1-10 of 24 resultsSorted by cheapest first

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.

ORD-MAA

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

USIL-MAA

ORD-MAA

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Chennai (average of ₹ 81,598). Flying from Illinois to Chennai in December is currently the most expensive (average of ₹ 161,759). 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?

Airfare is typical for this route at the moment.

Illinois to Chennai flights typically cost between ₹ 82,413 and ₹ 98,426 in October.
The cheapest return price found within the last 5 days was ₹ 85,530 on Etihad Airways (13 Oct–4 Nov).

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

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Chennai. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 Qatar Airways, Etihad Airways, and SWISS fly from Illinois to Chennai in about 21h 20m. The time it takes to get you to your destination can typically vary by up to 10h 45m. 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, February is the cheapest month in which you can book a flight from Illinois to Chennai (average of ₹ 81,598). Flying from Illinois to Chennai in December is currently the most expensive (average of ₹ 161,759). 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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Top 3 airlines flying from Illinois to Chennai

Airline	Cheapest	Average	Flexibility	On-time
Cathay Pacific	Cheapest₹ 69,303	Average₹ 93,540	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Etihad Airways	Cheapest₹ 78,954	Average₹ 102,398	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Air India	Cheapest₹ 110,605	Average₹ 140,093	FlexibilityNo cancel fee	On-timeN/A	Search Air India flights

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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?

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Cheap flights from Illinois to Chennai from ₹ 34,327

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. 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 25 September 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 25 September 2026.

Best flights from Illinois to ChennaiDiscover 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 25 September 2026.

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 25 September 2026.

Last-minute flights from Illinois to ChennaiDiscover last-minute flight deals from Illinois to Chennai. Data last updated 25 September 2026 and is based on user searches.

Discover last-minute flight deals from Illinois to Chennai. Data last updated 25 September 2026 and is based on user searches.

One-way flights from Illinois to ChennaiSearch for one-way flight options from Illinois to Chennai. Find affordable one-way fares based on user searches. Data last updated 25 September 2026.

Search for one-way flight options from Illinois to Chennai. Find affordable one-way fares based on user searches. Data last updated 25 September 2026.

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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.

Cheapflights Insights

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

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

Airfare is typical for this route at the moment.

Illinois to Chennai flights typically cost between ₹ 82,413 and ₹ 98,426 in October.The cheapest return price found within the last 5 days was ₹ 85,530 on Etihad Airways (13 Oct–4 Nov).

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

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Chennai. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

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?

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Other flights to Chennai

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Search flights from Illinois to Chennai by cabin class

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Illinois and Chennai flights

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

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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?

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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 25 September 2026.

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 25 September 2026.

Last-minute flights from Illinois to Chennai
Discover last-minute flight deals from Illinois to Chennai. Data last updated 25 September 2026 and is based on user searches.

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 25 September 2026.

Illinois to Chennai flights typically cost between ₹ 82,413 and ₹ 98,426 in October.
The cheapest return price found within the last 5 days was ₹ 85,530 on Etihad Airways (13 Oct–4 Nov).