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 Chennai (a popular airport in Tamil Nadu) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 21h 25m on average. If you fly from Coimbatore (another popular airport in Tamil Nadu) to Chicago O'Hare Intl Airport, then the average flight time is 31h 40m.

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

Air India, IndiGo, and Etihad Airways are the most popular carriers operating from Tamil Nadu 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 Tamil Nadu according to our data. Etihad Airways is the first choice among our users, with 35% 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 November 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.

₹ 34,079 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

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

21:05 - 15:10MAA-ORD

29h 35m2 stops

16:25 - 07:50ORD-MAA

27h 55m2 stops

₹ 66,374KLM

Find Deal

Sat, 6 Dec - Sat, 24 Jan

10:00 - 08:35MAA-ORD

33h 05m1 stop

14:00 - 02:25ORD-MAA

25h 55m1 stop

₹ 67,980Etihad Airways

Find Deal

Sat, 14 Mar - Sun, 19 Apr

08:05 - 12:30MAA-ORD

38h 55m1 stop

14:30 - 19:10ORD-MAA

42h 10m1 stop

₹ 71,726Air India

Find Deal

Sat, 21 Mar - Fri, 27 Mar

08:05 - 12:30MAA-ORD

38h 55m2 stops

14:00 - 02:25ORD-MAA

25h 55m1 stop

₹ 73,154Multiple Airlines

Find Deal

Sat, 14 Mar - Sun, 19 Apr

21:40 - 11:30MAA-ORD

25h 20m2 stops

13:10 - 19:55ORD-MAA

19h 15m1 stop

₹ 73,868Multiple Airlines

Find Deal

Sat, 6 Dec - Sat, 24 Jan

07:35 - 18:14MAA-STL

46h 09m2 stops

15:54 - 05:35STL-MAA

50h 11m2 stops

₹ 80,558British Airways

Find Deal

Thu, 29 Jan - Mon, 2 Feb

07:35 - 18:14MAA-STL

46h 09m2 stops

12:11 - 05:35STL-MAA

53h 54m2 stops

₹ 81,540British Airways

Find Deal

Thu, 29 Jan - Mon, 2 Feb

15:20 - 11:30CJB-ORD

31h 40m2 stops

13:30 - 14:45ORD-CJB

37h 45m1 stop

₹ 89,747Air India

Find Deal

Thu, 26 Feb - Sun, 1 Mar

02:00 - 18:14MAA-STL

27h 44m2 stops

07:04 - 00:35STL-MAA

30h 01m2 stops

₹ 120,258Cathay Pacific

Find Deal

Wed, 28 Jan - Mon, 2 Feb

02:00 - 22:59MAA-STL

32h 29m2 stops

07:04 - 00:35STL-MAA

30h 01m2 stops

₹ 121,239Cathay Pacific

Find Deal

Wed, 28 Jan - Mon, 2 Feb

Etihad Airways flights from Tamil Nadu to Illinois

Our best Etihad Airways deals on Tamil Nadu to Illinois flight tickets

Etihad Airways

14 Mar

MAA10:00Chennai

33h 05m

1 stop

ORD08:35Chicago O'Hare Intl

19 Apr

ORD14:00Chicago O'Hare Intl

25h 55m

1 stop

MAA02:25Chennai

₹ 67,980

Find similar

Etihad Airways

13 Mar

MAA03:55Chennai

39h 10m

1 stop

ORD08:35Chicago O'Hare Intl

19 Apr

ORD14:00Chicago O'Hare Intl

19h 30m

1 stop

MAA20:00Chennai

₹ 68,336

Find similar

Etihad Airways

30 Jan

MAA15:45Chennai

27h 20m

1 stop

ORD07:35Chicago O'Hare Intl

16 Feb

ORD13:10Chicago O'Hare Intl

19h 15m

1 stop

MAA19:55Chennai

₹ 70,210

Find similar

Air India flights from Tamil Nadu to Illinois

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

Air India

21 Mar

MAA08:05Chennai

38h 55m

1 stop

ORD12:30Chicago O'Hare Intl

27 Mar

ORD14:30Chicago O'Hare Intl

42h 10m

1 stop

MAA19:10Chennai

₹ 71,726

Find similar

Air India

26 Feb

CJB15:20Coimbatore Peelamedu

31h 40m

2 stops

ORD11:30Chicago O'Hare Intl

1 Mar

ORD13:30Chicago O'Hare Intl

37h 45m

1 stop

CJB14:45Coimbatore Peelamedu

₹ 89,747

Find similar

Air India

26 Feb

CJB15:20Coimbatore Peelamedu

31h 40m

2 stops

ORD11:30Chicago O'Hare Intl

1 Mar

ORD13:30Chicago O'Hare Intl

41h 10m

1 stop

CJB18:10Coimbatore Peelamedu

₹ 92,602

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 6/12

21:05-15:10

2 stops29h 35m

Chicago O'Hare Intl

Sat 24/1

16:25-07:50

2 stops27h 55m

₹ 66,374

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 14/3

10:00-08:35

1 stop33h 05m

Chicago O'Hare Intl

Sun 19/4

14:00-02:25

1 stop25h 55m

₹ 67,980

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 21/3

08:05-12:30

1 stop38h 55m

Chicago O'Hare Intl

Fri 27/3

14:30-19:10

1 stop42h 10m

₹ 71,726

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 14/3

08:05-12:30

2 stops38h 55m

Chicago O'Hare Intl

Sun 19/4

14:00-02:25

1 stop25h 55m

₹ 73,154

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 6/12

21:40-11:30

2 stops25h 20m

Chicago O'Hare Intl

Sat 24/1

13:10-19:55

1 stop19h 15m

₹ 73,868

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Thu 29/1

07:35-18:14

2 stops46h 09m

Lambert-St Louis

Mon 2/2

15:54-05:35

2 stops50h 11m

₹ 80,558

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Thu 29/1

07:35-18:14

2 stops46h 09m

Lambert-St Louis

Mon 2/2

12:11-05:35

2 stops53h 54m

₹ 81,540

CoimbatoreChicago

CJB - ORD

CJBORD

Coimbatore Peelamedu

Thu 26/2

15:20-11:30

2 stops31h 40m

Chicago O'Hare Intl

Sun 1/3

13:30-14:45

1 stop37h 45m

₹ 89,747

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Wed 28/1

02:00-18:14

2 stops27h 44m

Lambert-St Louis

Mon 2/2

07:04-00:35

2 stops30h 01m

₹ 120,258

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Wed 28/1

02:00-22:59

2 stops32h 29m

Lambert-St Louis

Mon 2/2

07:04-00:35

2 stops30h 01m

₹ 121,239

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 ₹ 78,596. If you aren’t able to travel during the month of October, then book flights to Illinois from Tamil Nadu during November instead. Flights to Illinois in November, while not as cheap as those in October, still average around ₹ 89,747.

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 ₹ 99,014. 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 ₹ 115,846. 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 Tamil Nadu to Illinois in the afternoon for as low as ₹ 105,079. 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 ₹ 110,832.

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 ₹ 101,107 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 ₹ 78,774 on momondo.

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

You could potentially save up to 27% 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	21h 25m
Direct flights	None

The fastest flight from Tamil Nadu to Illinois takes 21h 25m

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 November 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 ₹ 71,645	Free Cancellation	Rating 5.5 2,947 reviews	Search Air India flights
Etihad Airways	PriceFrom ₹ 74,503	Free Cancellation	Rating 7.4 1,312 reviews	Search Etihad Airways flights
Qatar Airways	PriceFrom ₹ 81,042	Free Cancellation	Rating 7.4 3,672 reviews	Search Qatar Airways flights
British Airways	PriceFrom ₹ 81,376	Free Cancellation	Rating 6.7 7,538 reviews	Search British Airways flights
Lufthansa	PriceFrom ₹ 83,104	Free Cancellation	Rating 6.8 7,592 reviews	Search Lufthansa flights
Emirates	PriceFrom ₹ 91,438	Free Cancellation	Rating 8.1 3,421 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.