What is the cheapest airline that flies from Chennai to Illinois?

Air India is the most popular carrier operating from Chennai to Illinois

Which airlines fly to Illinois?

Etihad Airways, Emirates and British Airways are the top three most popular airlines that fly to Illinois from Chennai according to our data. Etihad Airways is the first choice among our users, with 36% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Chennai Airport to Illinois?

Prices for flights from Chennai Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Chennai Airport to Illinois?

As of December 2025, there are 6 operators available to choose from for flights from Chennai Airport to Illinois.

How old do you have to be to fly from Chennai Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chennai Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

₹ 37,205 Cheap Flights from Chennai to Illinois in 2025/26

1 adult

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Find the cheapest flights from Chennai to Illinois

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

16:20 - 12:30

MAA

ORD

30h 40m2 stops

13:10 - 04:55

ORD

MAA

29h 15m1 stop

₹ 68,014Air India

Sun, 15 Mar - Wed, 1 Apr

16:20 - 12:30

MAA

ORD

30h 40m1 stop

13:10 - 21:00

ORD

MAA

21h 20m1 stop

₹ 70,537Air India

Sun, 15 Mar - Wed, 1 Apr

09:50 - 11:30

MAA

ORD

37h 10m2 stops

14:30 - 00:35

ORD

MAA

23h 35m1 stop

₹ 70,627Air India

Sun, 8 Feb - Sun, 15 Mar

21:30 - 15:10

MAA

ORD

29h 10m2 stops

17:20 - 08:25

ORD

MAA

27h 35m2 stops

₹ 70,807Air France

Thu, 22 Jan - Thu, 29 Jan

19:00 - 15:10

MAA

ORD

31h 40m2 stops

16:25 - 07:50

ORD

MAA

27h 55m2 stops

₹ 70,897Multiple Airlines

Wed, 21 Jan - Wed, 28 Jan

20:30 - 15:20

MAA

ORD

29h 20m2 stops

17:10 - 06:05

ORD

MAA

26h 25m2 stops

₹ 71,077Multiple Airlines

Sat, 14 Mar - Sat, 18 Apr

20:00 - 11:30

MAA

ORD

27h 00m1 stop

14:30 - 22:40

ORD

MAA

21h 40m1 stop

₹ 73,059Air India

Sun, 8 Feb - Sun, 15 Mar

03:55 - 07:35

MAA

ORD

39h 10m1 stop

13:10 - 19:55

ORD

MAA

19h 15m1 stop

₹ 74,140Etihad Airways

Fri, 19 Dec - Sat, 7 Feb

10:00 - 07:35

MAA

ORD

33h 05m1 stop

13:10 - 02:30

ORD

MAA

25h 50m1 stop

₹ 74,861Etihad Airways

Sat, 20 Dec - Sat, 7 Feb

07:35 - 13:54

MAA

STL

41h 49m2 stops

13:36 - 05:35

STL

MAA

28h 29m2 stops

₹ 82,068British Airways

Wed, 11 Feb - Sun, 15 Feb

Air India flights from Chennai to Illinois

Our best Air India deals on Chennai to Illinois flight tickets

Air India

15 Mar

MAA16:20Chennai

30h 40m

2 stops

ORD12:30Chicago O'Hare Intl

1 Apr

ORD13:10Chicago O'Hare Intl

29h 15m

1 stop

MAA04:55Chennai

₹ 68,014

Find similar

Air India

15 Mar

MAA16:20Chennai

30h 40m

1 stop

ORD12:30Chicago O'Hare Intl

1 Apr

ORD13:10Chicago O'Hare Intl

21h 20m

1 stop

MAA21:00Chennai

₹ 70,537

Find similar

Air India

8 Feb

MAA09:50Chennai

37h 10m

2 stops

ORD11:30Chicago O'Hare Intl

15 Mar

ORD14:30Chicago O'Hare Intl

23h 35m

1 stop

MAA00:35Chennai

₹ 70,627

Find similar

Etihad Airways flights from Chennai to Illinois

Our best Etihad Airways deals on Chennai to Illinois flight tickets

Etihad Airways

19 Dec

MAA03:55Chennai

39h 10m

1 stop

ORD07:35Chicago O'Hare Intl

7 Feb

ORD13:10Chicago O'Hare Intl

19h 15m

1 stop

MAA19:55Chennai

₹ 74,140

Find similar

Etihad Airways

20 Dec

MAA10:00Chennai

33h 05m

1 stop

ORD07:35Chicago O'Hare Intl

7 Feb

ORD13:10Chicago O'Hare Intl

25h 50m

1 stop

MAA02:30Chennai

₹ 74,861

Find similar

Etihad Airways

6 Feb

MAA15:45Chennai

27h 20m

1 stop

ORD07:35Chicago O'Hare Intl

23 Feb

ORD13:10Chicago O'Hare Intl

25h 50m

1 stop

MAA02:30Chennai

₹ 75,311

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 15/3

16:20-12:30

2 stops30h 40m

Chicago O'Hare Intl

Wed 1/4

13:10-04:55

1 stop29h 15m

₹ 68,014

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 15/3

16:20-12:30

1 stop30h 40m

Chicago O'Hare Intl

Wed 1/4

13:10-21:00

1 stop21h 20m

₹ 70,537

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 8/2

09:50-11:30

2 stops37h 10m

Chicago O'Hare Intl

Sun 15/3

14:30-00:35

1 stop23h 35m

₹ 70,627

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Thu 22/1

21:30-15:10

2 stops29h 10m

Chicago O'Hare Intl

Thu 29/1

17:20-08:25

2 stops27h 35m

₹ 70,807

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Wed 21/1

19:00-15:10

2 stops31h 40m

Chicago O'Hare Intl

Wed 28/1

16:25-07:50

2 stops27h 55m

₹ 70,897

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 14/3

20:30-15:20

2 stops29h 20m

Chicago O'Hare Intl

Sat 18/4

17:10-06:05

2 stops26h 25m

₹ 71,077

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 8/2

20:00-11:30

1 stop27h 00m

Chicago O'Hare Intl

Sun 15/3

14:30-22:40

1 stop21h 40m

₹ 73,059

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Fri 19/12

03:55-07:35

1 stop39h 10m

Chicago O'Hare Intl

Sat 7/2

13:10-19:55

1 stop19h 15m

₹ 74,140

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 20/12

10:00-07:35

1 stop33h 05m

Chicago O'Hare Intl

Sat 7/2

13:10-02:30

1 stop25h 50m

₹ 74,861

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Wed 11/2

07:35-13:54

2 stops41h 49m

Lambert-St Louis

Sun 15/2

13:36-05:35

2 stops28h 29m

₹ 82,068

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chennai to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Illinois?

In general, October is the cheapest month to fly from Chennai to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 79,365. If you aren’t able to travel during the month of October, then book flights to Illinois from Chennai during September instead. Flights to Illinois in September, while not as cheap as those in October, still average around ₹ 90,986.

What is the cheapest day to depart on your flight to Illinois?

On average, the least expensive day to fly to Illinois from Chennai is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as ₹ 99,983. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Chennai to Illinois on a Thursday will generally be more expensive and average around ₹ 116,980. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

According to our data, the cheapest time of day to fly to Illinois is in the afternoon. momondo users have found flights departing from Chennai to Illinois in the afternoon for as low as ₹ 106,108. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Illinois is in the morning when prices are around ₹ 111,916.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Chennai when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around ₹ 99,394 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Chennai for as low as ₹ 79,455 on momondo.

Can stopping save me money on Chennai to Illinois flights?

You could potentially save up to 27% on your flight if you consider stops on a Chennai to Illinois flight.

Cheap Chennai to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chennai to Illinois

Fastest flight time	22h 40m
Direct flights	None

The fastest flight from Chennai to Illinois takes 22h 40m

There are no direct flights from Chennai to Illinois. There are no popular flight routes from Chennai to Illinois.

Search flight deals

When did momondo last update prices for flights from Chennai Airport to Illinois?
Prices for flights from Chennai Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Chennai Airport to Illinois?
As of December 2025, there are 6 operators available to choose from for flights from Chennai Airport to Illinois.
How old do you have to be to fly from Chennai Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chennai Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Chennai to Illinois

Compare and see reviews for airlines that fly from Chennai to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Air India	PriceFrom ₹ 72,346	Free Cancellation	Rating 5.5 2,947 reviews	Search Air India flights
Etihad Airways	PriceFrom ₹ 75,232	Free Cancellation	Rating 7.4 1,330 reviews	Search Etihad Airways flights
Lufthansa	PriceFrom ₹ 81,330	Free Cancellation	Rating 6.8 7,618 reviews	Search Lufthansa flights
Qatar Airways	PriceFrom ₹ 81,835	Free Cancellation	Rating 7.4 3,676 reviews	Search Qatar Airways flights
British Airways	PriceFrom ₹ 83,177	Free Cancellation	Rating 6.7 7,569 reviews	Search British Airways flights
Emirates	PriceFrom ₹ 92,333	Free Cancellation	Rating 8.1 3,432 reviews	Search Emirates flights

Why use momondo?

Why should I use momondo to find a flight deal from Chennai to Illinois?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Chennai.

Can I find flights from Chennai to Illinois with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Illinois from Chennai with this policy.

How can momondo help me find flights from Chennai to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Chennai.

I’m not ready to book a flight from Chennai to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Chennai are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.