How long is the flight from Tamil Nadu to Illinois?

The flight from Tamil Nadu to Illinois depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Coimbatore (a popular airport in Tamil Nadu) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 24h 40m on average. If you fly from Chennai (another popular airport in Tamil Nadu) to Chicago O'Hare Intl Airport, then the average flight time is 26h 40m.

What is the cheapest airline that flies from Tamil Nadu to Illinois?

Air India, Cathay Pacific, and IndiGo are the most popular carriers operating from Tamil Nadu to Illinois

Which airlines fly to Illinois?

Etihad Airways, British Airways and Emirates are the top three most popular airlines that fly to Illinois from Tamil Nadu according to our data. Etihad Airways is the first choice among our users, with 37% 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 Tamil Nadu to Illinois?

Prices for flights from Tamil Nadu to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Tamil Nadu to Illinois?

The number of operators available for flights from Tamil Nadu to Illinois is 6 as of December 2025.

How old do you have to be to fly from Tamil Nadu to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Tamil Nadu to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

₹ 41,412 Cheap Flights from Tamil Nadu to Illinois in 2025/26

1 adult

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Find the cheapest flights from Tamil Nadu to Illinois

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

10:00 - 07:35

MAA

ORD

33h 05m1 stop

13:10 - 19:55

ORD

MAA

19h 15m1 stop

₹ 66,924Etihad Airways

Tue, 10 Feb - Sun, 1 Mar

10:00 - 07:35

MAA

ORD

33h 05m1 stop

14:10 - 02:30

ORD

MAA

25h 50m1 stop

₹ 67,463Etihad Airways

Fri, 27 Feb - Mon, 16 Mar

21:40 - 07:35

MAA

ORD

21h 25m1 stop

13:10 - 19:55

ORD

MAA

19h 15m1 stop

₹ 67,732Etihad Airways

Sun, 8 Feb - Sun, 22 Feb

10:00 - 07:35

MAA

ORD

33h 05m1 stop

13:10 - 19:55

ORD

MAA

19h 15m1 stop

₹ 67,822Etihad Airways

Mon, 9 Feb - Mon, 16 Feb

07:35 - 19:29

MAA

STL

47h 24m2 stops

18:44 - 05:35

STL

MAA

47h 21m2 stops

₹ 89,651British Airways

Wed, 4 Feb - Sun, 8 Feb

07:35 - 19:29

MAA

STL

47h 24m2 stops

18:44 - 05:35

STL

MAA

47h 21m2 stops

₹ 89,741British Airways

Wed, 4 Feb - Sun, 8 Feb

21:00 - 11:10

CJB

ORD

24h 40m2 stops

14:20 - 08:10

ORD

CJB

31h 20m2 stops

₹ 98,005Multiple Airlines

Sat, 25 Apr - Thu, 15 Oct

16:35 - 15:19

MAA

STL

33h 14m2 stops

07:42 - 02:25

STL

MAA

32h 13m2 stops

₹ 107,527Multiple Airlines

Thu, 2 Apr - Sat, 4 Jul

21:10 - 13:25

MAA

STL

26h 45m2 stops

15:30 - 00:10

STL

MAA

22h 10m1 stop

₹ 123,697Lufthansa

Thu, 2 Apr - Tue, 30 Jun

18:00 - 13:25

MAA

STL

29h 55m2 stops

13:27 - 08:45

STL

MAA

32h 48m3 stops

₹ 150,915Lufthansa

Thu, 2 Apr - Thu, 2 Jul

Air India flights from Tamil Nadu to Illinois

Our best Air India deals on Tamil Nadu to Illinois flight tickets

Air India

8 Feb

MAA20:00Chennai

27h 00m

2 stops

ORD11:30Chicago O'Hare Intl

22 Feb

ORD13:30Chicago O'Hare Intl

21h 40m

1 stop

MAA22:40Chennai

₹ 76,536

Find similar

Air India

23 Apr

MAA20:40Chennai

25h 00m

2 stops

ORD11:10Chicago O'Hare Intl

19 Oct

ORD13:10Chicago O'Hare Intl

24h 50m

1 stop

MAA00:30Chennai

₹ 79,141

Find similar

Air India

23 Apr

CJB09:10Coimbatore Peelamedu

36h 30m

3 stops

ORD11:10Chicago O'Hare Intl

8 Oct

ORD06:45Chicago O'Hare Intl

45h 30m

2 stops

CJB14:45Coimbatore Peelamedu

₹ 121,091

Find similar

Air Canada flights from Tamil Nadu to Illinois

Our best Air Canada deals on Tamil Nadu to Illinois flight tickets

Air Canada

10 Feb

MAA01:50Chennai

31h 45m

2 stops

ORD22:05Chicago O'Hare Intl

11 Mar

ORD12:50Chicago O'Hare Intl

24h 45m

2 stops

MAA00:05Chennai

₹ 82,375

Find similar

Air Canada

10 Feb

MAA01:50Chennai

26h 20m

2 stops

ORD16:40Chicago O'Hare Intl

16 Mar

ORD14:00Chicago O'Hare Intl

23h 35m

2 stops

MAA00:05Chennai

₹ 82,734

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Tue 10/2

10:00-07:35

1 stop33h 05m

Chicago O'Hare Intl

Sun 1/3

13:10-19:55

1 stop19h 15m

₹ 66,924

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Fri 27/2

10:00-07:35

1 stop33h 05m

Chicago O'Hare Intl

Mon 16/3

14:10-02:30

1 stop25h 50m

₹ 67,463

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 8/2

21:40-07:35

1 stop21h 25m

Chicago O'Hare Intl

Sun 22/2

13:10-19:55

1 stop19h 15m

₹ 67,732

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Mon 9/2

10:00-07:35

1 stop33h 05m

Chicago O'Hare Intl

Mon 16/2

13:10-19:55

1 stop19h 15m

₹ 67,822

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Wed 4/2

07:35-19:29

2 stops47h 24m

Lambert-St Louis

Sun 8/2

18:44-05:35

2 stops47h 21m

₹ 89,651

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Wed 4/2

07:35-19:29

2 stops47h 24m

Lambert-St Louis

Sun 8/2

18:44-05:35

2 stops47h 21m

₹ 89,741

CoimbatoreChicago

CJB - ORD

CJBORD

Coimbatore Peelamedu

Sat 25/4

21:00-11:10

2 stops24h 40m

Chicago O'Hare Intl

Thu 15/10

14:20-08:10

2 stops31h 20m

₹ 98,005

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Thu 2/4

16:35-15:19

2 stops33h 14m

Lambert-St Louis

Sat 4/7

07:42-02:25

2 stops32h 13m

₹ 107,527

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Thu 2/4

21:10-13:25

2 stops26h 45m

Lambert-St Louis

Tue 30/6

15:30-00:10

1 stop22h 10m

₹ 123,697

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Thu 2/4

18:00-13:25

2 stops29h 55m

Lambert-St Louis

Thu 2/7

13:27-08:45

3 stops32h 48m

₹ 150,915

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 Tamil Nadu 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

Other information

What is the cheapest month to fly to Illinois?

In general, October is the cheapest month to fly from Tamil Nadu to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 79,141. If you aren’t able to travel during the month of October, then book flights to Illinois from Tamil Nadu during September instead. Flights to Illinois in September, while not as cheap as those in October, still average around ₹ 90,729.

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

On average, the least expensive day to fly to Illinois from Tamil Nadu is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as ₹ 99,700. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Tamil Nadu to Illinois on a Thursday will generally be more expensive and average around ₹ 116,649. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

You are more likely to see cheaper flights to Illinois from Tamil Nadu when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around ₹ 99,135 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 Tamil Nadu for as low as ₹ 79,230 on momondo.

Can stopping save me money on Tamil Nadu to Illinois flights?

You could potentially save up to 18% on your flight if you consider stops on a Tamil Nadu to Illinois flight.

Cheap Tamil Nadu to Illinois flight deals and tips

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

Fastest flight time	24h 40m
Direct flights	None

The fastest flight from Tamil Nadu to Illinois takes 24h 40m

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

Search flight deals

When did momondo last update prices for flights from Tamil Nadu to Illinois?
Prices for flights from Tamil Nadu to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Tamil Nadu to Illinois?
The number of operators available for flights from Tamil Nadu to Illinois is 6 as of December 2025.
How old do you have to be to fly from Tamil Nadu to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Tamil Nadu to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Tamil Nadu to Illinois

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

Airline	Rating	Free Cancellation	Price
Air India	PriceFrom ₹ 72,142	Free Cancellation	Rating 5.5 2,957 reviews	Search Air India flights
Etihad Airways	PriceFrom ₹ 75,019	Free Cancellation	Rating 7.4 1,337 reviews	Search Etihad Airways flights
Lufthansa	PriceFrom ₹ 81,100	Free Cancellation	Rating 6.8 7,653 reviews	Search Lufthansa flights
Qatar Airways	PriceFrom ₹ 81,604	Free Cancellation	Rating 7.4 3,692 reviews	Search Qatar Airways flights
British Airways	PriceFrom ₹ 87,290	Free Cancellation	Rating 6.7 7,614 reviews	Search British Airways flights
Emirates	PriceFrom ₹ 90,135	Free Cancellation	Rating 8.1 3,444 reviews	Search Emirates flights

Why use momondo?

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

It is quick and easy to find Tamil Nadu to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

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

momondo does allow users to show only those flights to Illinois from Tamil Nadu which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Tamil Nadu to Illinois?

Once all potential Tamil Nadu to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Tamil Nadu to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.